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01-09-2003, 06:15 PM | #1 |
Scooby Guru
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The Subaru CEL thread
Purpose: Did your Scooby throw a cel?
Help us to see what is common with subarus, every car line has problems accross the line, with the thread we can see what kind of problems subaru is experiencing, what are the most common causes of the CEL to come on on a scoobie. So please post, your cars, year, make, model and mileage, what cel code you have gotton, the code and definition. If it was fixed, please include what was done to rectify the the problem. Things not to post. If you have a high flow cat and keep getting cat efficiency codes. this is a reference thread meant to help those who have from stock to slightly moddified vehicles. lets see how it goes. Thanks everyone. Please try to use this format for posting to the log, then add your comments below the entry. Code: Defintion Year/Make/Model Mileage: Fix for problem:
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Last edited by munkis; 01-14-2003 at 09:31 PM. |
01-10-2003, 10:47 AM | #2 |
Scooby Newbie
Member#: 19991
Join Date: Jun 2002
Location: Raleigh, NC
Vehicle:2014 Outback Twilight Blue Metallic |
P0420 Cat below efficiency
P0420 - Cat. below efficiency threshold: Bank 1.
2000 Legacy OBW LTD. 61k I have a 2000 Legacy OBW Ltd. with 61K on the clock. My car is BONE STOCK as far as the engine is concerned. I got a P0420 "Cat. below efficiency threshold: bank 1". I was told by the AutoZone clerk that this is an O2 sensor going bad and I needed to replace the sensor. I have since been told by McDade and HndaTch627 that this is really my cat going bad. Updates to come. Tony *Update* OK I have to fess up to being dumb. I had replaced the spark plugs before I got the code and I had used Bosch Platinum regular plugs, not the "plus 2 or 4" gimicks just regular platinum plugs. I know that I had been warned about using Bosch plugs but they were the only things available at the time. I ended up calling the stealer (Southern States) and talking to Quincy the lead Suby mechanic. I told him that I had done the 60K service and he said "You put Bosch Platinum plugs in it didn't you.". I told him I had and he told me to get them out and replace them with NGKs. I was able to find regular copper NGK "V-power" plugs that crossed to the original Champion plugs. Once I put the plugs in and drove it a couple of days the light went out but I still had it cleared by AutoZone. I have been driving it now for about a week in the fixed state with no light and much better fuel economy. /kicks self in butt/ Last edited by GreenGiant; 02-05-2003 at 08:40 AM. |
01-12-2003, 10:58 PM | #3 | |
Allergic to turbos
Moderator Member#: 181
Join Date: Aug 1999
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Location: MAIC & Southeast
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Re: P0420 Cat below efficiency
Quote:
I've had that twice. I had 49k on the clock. The dealer replaced the cat. 10k miles later, I've not seen that CE light. Now I'm getting another code, P0065. I've had 6 CE lights since Thanksgiving. A friend had the same code on his RS a few weeks ago. Turns out that a solenoid mounted on a bracket behind the power steering resivoir. I took it apart and cleaned it, seemed to work and the light was off, but as mentioned before, its back on. I also installed a Ganzflow intake at the same time and after 120 miles, I've got yet another CE light. I'll get it scanned tomorrow and post what it is. BTW, the Ganzflow and K&N are my only modifications to the intake/fuel system. Last edited by munkis; 01-14-2003 at 09:27 PM. |
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01-13-2003, 07:14 PM | #4 |
RIP 1/19/64 - 7/23/11
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Vehicle:1957 Taggart Comet atlasshruggedpart1.com |
Hmmm ... I swear I've seen (and entered info into) a similar thread already ...
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01-13-2003, 10:59 PM | #5 |
Scooby Newbie
Member#: 7711
Join Date: Jun 2001
Chapter/Region:
SWIC
Location: Tucson, AZ
Vehicle:2005 WRX STi Silver |
I recently had a P0420 (cat efficiency low, bank 1) on my 00 RS. I have a Stromung 2.25" cat-back, Borla headers, and 47K miles. The mechanic i went to (Honda and Subaru specialist) says he sees these types of codes alot in cars with high-flow exhausts and headers. A lack of heat shielding on the headers can supposedly also cause this, since the exhaust loses too much heat before getting to the cat.
I was told this will cause no harm, but the cats may not be working as well as they could. |
01-14-2003, 03:37 AM | #6 | |
Scooby Specialist
Member#: 2267
Join Date: Sep 2000
Chapter/Region:
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Location: LA dentention core
Vehicle:00RS rutherforddesign.com |
Quote:
My other thought is maybe the Borla has a high enough flow that it blows the gasses through the cat too fast to burn fully? I'm sure the header wrap will help, but I wish I knew which wire on the O2 sensor was the sense lead so I can test it at closed loop. Are the 00' RS O2 sensors 0-5 volt? Is STOICH 2.5 volts? Any help is greatly appreciated! -Andy |
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01-14-2003, 06:38 PM | #7 |
Allergic to turbos
Moderator Member#: 181
Join Date: Aug 1999
Chapter/Region:
MAIC
Location: MAIC & Southeast
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Have either of you ever received a recall notice from Subaru for your o2 sensors or reprogram of the ECM? I had that code several times and once the dealer replaced the cat, it went away. I had the standard mid-pipe but Stromung rear box. I've also heard that that setup will throw that code frequently, but its meaningless after a while.
Oh, my pe0065 is currently off. I took apart the solenoid behind the power steering resivoir and cleaned it. Seems ok now, but I'll give it a few hundred miles before I declare it fixed. |
01-14-2003, 08:19 PM | #8 | |
*** Banned ***
Member#: 2992
Join Date: Nov 2000
Chapter/Region:
NESIC
Location: Connecticut, USA
Vehicle:02 WRX Sedan Silver |
Re: The Subaru CEL thread
Quote:
Great idea to Balkanize the information. Last edited by munkis; 12-16-2008 at 01:25 PM. |
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01-14-2003, 09:13 PM | #9 |
Scooby Guru
Member#: 1847
Join Date: Jul 2000
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Location: brokenmotorsports.com
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Not everyone on this board has a WRX , so spare me, further more that thread/log was started to use as ammo with SOA to get on the ball with all the CE light problems everyone was having with the 'new' wrx.
Also this thread has NOTHING to do with warranty or SOA, its is exactly as stated a log to so members can quickly find information on codes that they may have. if I can find another full subaru line based cel log thread in this forum I will merge them. please stick to the subject. Ive edited some posts to be able to pick out the codes easier, please try to use this format Code: Defintion Year/Make/Model Mileage: Fix for problem: thanks Jay Last edited by munkis; 01-14-2003 at 09:30 PM. |
01-14-2003, 10:30 PM | #10 | |
*** Banned ***
Member#: 2992
Join Date: Nov 2000
Chapter/Region:
NESIC
Location: Connecticut, USA
Vehicle:02 WRX Sedan Silver |
Quote:
However, Keep your thread for the small proportion of non-WRX Imprezas. Merely insure that the WRX CELS are reported in the long-running thread that was established for this purpose and has helped members in the past: WRX Check Engine Light Log. Last edited by munkis; 12-16-2008 at 01:26 PM. |
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01-15-2003, 04:53 AM | #11 | |
Scooby Specialist
Member#: 2267
Join Date: Sep 2000
Chapter/Region:
SCIC
Location: LA dentention core
Vehicle:00RS rutherforddesign.com |
Quote:
edit: I apologize for the OT posting I have shared in, but this guys false sense of exclusivity, sour attitude, and misinformation is a joke. Last edited by Andrew Bacon; 01-15-2003 at 05:07 AM. |
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01-15-2003, 03:10 PM | #12 |
Scooby Newbie
Member#: 17479
Join Date: Apr 2002
Location: Toronto, On - Canada
Vehicle:1999 Impreza WRX Silverthorn Metallic |
Found this, could be for future reference. _
Sorry about the length but there are a lot of codes for a WRX. Subaru Specific OBDII Diagnostic Trouble Codes (DTC) -------------------------------------------------------------------------------- P0031 Front oxygen (A/F) sensor heater circuit low input P0032 Front oxygen (A/F) sensor heater circuit high input _ P0037 Rear oxygen sensor heater circuit malfunction P0038 Rear oxygen sensor heater circuit high input P0065 Air assist injector solenoid valve malfunction P0066 Air assist injector solenoid valve circuit low input P0067 Air assist injector solenoid valve circuit high input P0101 Mass air flow sensor circuit range/performance problem (high input) P0102 Mass air flow sensor circuit low input P0103 Mass air flow sensor circuit high input P0106 Pressure sensor circuit range/performance problem (low input) P0107 Pressure sensor circuit low input P0108 Pressure sensor circuit high input P0111 Intake air temperature sensor circuit range/performance problem P0112 Intake air temperature sensor circuit low input P0113 Intake air temperature sensor circuit high input P0117 Engine coolant temperature sensor circuit low input P0118 Engine coolant temperature sensor circuit high input P0121 Throttle position sensor circuit range/performance problem (high input) P0122 Throttle position sensor circuit low input P0123 Throttle position sensor circuit high input P0125 Insufficient coolant temperature for closed loop fuel control P0128 Thermostat malfunction P0130 Front oxygen (A/F) sensor circuit range/performance problem (lean) P0131 Front oxygen (A/F) sensor circuit range/performance problem (low input) P0132 Front oxygen (A/F) sensor circuit range/performance problem (high input) P0133 Front oxygen (A/F) sensor circuit slow response P0136 Rear oxygen sensor circuit malfunction P0139 Rear oxygen sensor circuit slow response P0171 Fuel trim malfunction (A/F too lean) P0172 Fuel trim malfunction (A/F too rich) P0181 Fuel temperature sensor A circuit range/performance problem P0182 Fuel temperature sensor A circuit low input P0183 Fuel temperature sensor A circuit high input P0244 Wastegate control solenoid valve malfunction (high input) P0245 Wastegate control solenoid valve circuit low input P0246 Wastegate control solenoid valve circuit high input P0301 Cylinder 1 misfire detected P0302 Cylinder 2 misfire detected P0303 Cylinder 3 misfire detected P0304 Cylinder 4 misfire detected P0327 Knock sensor circuit low input P0328 Knock sensor circuit high input P0335 Crankshaft position sensor circuit malfunction P0336 Crankshaft position sensor circuit range/performance problem P0340 Camshaft position sensor circuit malfunction P0341 Camshaft position sensor circuit range/performance problem P0420 Catalyst system efficiency below threshold P0442 Evaporative emission control system malfunction P0444 Evaporative emission control system purge control valve circuit low input P0445 Evaporative emission control system purge control valve circuit high input P0447 Evaporative emission control system vent control low input P0448 Evaporative emission control system vent control high input P0451 Evaporative emission control system pressure sensor range/performance problem P0452 Evaporative emission control system pressure sensor low input P0453 Evaporative emission control system pressure sensor high input P0456 Evaporative emission control system malfunction P0457 Evaporative emission control system leak detected (fuel cap loose/off) P0461 Fuel level sensor circuit range/performance problem P0462 Fuel level sensor circuit low input P0463 Fuel level sensor circuit high input P0464 Fuel level sensor intermittent input P0480 Cooling fan relay 1 circuit low input P0483 Cooling fan function problem P0500 Vehicle speed sensor malfunction P0506 Idle control system RPM lower than expected P0507 Idle control system RPM higher than expected P0508 Idle control system circuit low input P0509 Idle control system circuit high input P0512 Starter switch circuit high input P0545 Exhaust gas temperature sensor circuit low input P0546 Exhaust gas temperature sensor circuit high input P0604 Internal control module memory check sum error P0703 Brake switch input malfunction P0705 Transmission range sensor circuit malfunction P0710 Transmission fluid temperature sensor circuit malfunction P0715 Torque converter turbine speed sensor circuit malfunction P0720 Output speed sensor (vehicle speed sensor 2) circuit malfunction P0725 Engine speed input circuit malfunction P0731 Gear 1 incorrect ratio P0732 Gear 2 incorrect ratio P0733 Gear 3 incorrect ratio P0734 Gear 4 incorrect ratio P0741 Torque converter clutch system malfunction P0743 Torque converter clutch system (Lock-up duty solenoid) electrical P0748 Pressure control solenoid (Line pressure duty solenoid) electrical P0753 Shift solenoid A (Shift solenoid 1) electrical P0758 Shift solenoid B (Shift solenoid 2) electrical P0778 2-4 brake pressure control solenoid valve (2-4 brake duty solenoid) circuit malfunction P0785 2-4 brake timing control solenoid valve (2-4 brake timing solenoid) circuit malfunction P1086 Tumble generator valve #2 (LH) position sensor circuit low input P1087 Tumble generator valve #2 (LH) position sensor circuit high input P1088 Tumble generator valve #1 (RH) position sensor circuit low input P1089 Tumble generator valve #1 (RH) position sensor circuit high input P1090 Tumble generator valve #1 (RH) malfunction (stuck open) P1091 Tumble generator valve #1 (RH) malfunction (stuck close) P1092 Tumble generator valve #2 (LH) malfunction (stuck open) P1093 Tumble generator valve #2 (LH) malfunction (stuck close) P1094 Tumble generator valve circuit #1 (open circuit) P1095 Tumble generator valve circuit #1 (over current) P1096 Tumble generator valve circuit #2 (open circuit) P1097 Tumble generator valve circuit #2 (over current) P1110 Atmospheric pressure sensor low input P1111 Atmospheric pressure sensor high input P1112 Atmospheric pressure sensor range/performance problem P1130 Front oxygen sensor circuit malfunction (open circuit) P1131 Front oxygen sensor circuit malfunction (short circuit) P1134 Front oxygen (A/F) sensor microcomputer problem P1137 Front oxygen (A/F) sensor circuit range/performance problem P1139 Front oxygen (A/F) sensor #1 heater circuit performance/range problem P1141 Mass air flow sensor circuit range/performance problem (low input) P1142 Throttle position sensor circuit range/performance problem (low input) P1146 Pressure sensor circuit range/performance problem (high input) P1230 Fuel pump control unit malfunction P1244 Wastegate control solenoid valve malfunction (low input) P1245 Wastegate control solenoid valve malfunction (fail-safe) P1301 Fire due to increased exhaust temperature P1312 Exhaust temperature sensor malfunction P1400 Fuel tank pressure control solenoid valve circuit low input P1420 Fuel tank pressure control solenoid valve circuit high input P1443 Evaporative emission control system vent control function problem P1480 Cooling fan relay 1 circuit high input P1507 Idle control system malfunction (fail-safe) P1510 Idle air control solenoid valve signal 1 circuit low input P1511 Idle air control solenoid valve signal 1 circuit high input P1512 Idle air control solenoid valve signal 2 circuit low input P1513 Idle air control solenoid valve signal 2 circuit high input P1514 Idle air control solenoid valve signal 3 circuit low input P1515 Idle air control solenoid valve signal 3 circuit high input P1516 Idle air control solenoid valve signal 4 circuit low input P1517 Idle air control solenoid valve signal 4 circuit high input P1518 Starter switch circuit low input P1540 Vehicle speed sensor malfunction 2 P1544 High exhaust temperature detected P1560 Back-up voltage circuit malfunction P1590 Neutral position switch circuit high input P1591 Neutral position switch circuit low input P1592 Neutral position switch circuit (MT model) P1594 Automatic transmission diagnosis input signal circuit malfunction P1595 Automatic transmission diagnosis input signal circuit low input P1596 Automatic transmission diagnosis input signal circuit high input P1698 Engine torque control cut signal circuit low input P1699 Engine torque control cut signal circuit high input P1700 Throttle position sensor circuit malfunction for automatic transmission P1701 Cruise control set signal circuit malfunction for automatic transmission P1703 Low clutch timing control solenoid valve circuit malfunction P1711 Engine torque control signal 1 circuit malfunction P1712 Engine torque control signal 2 circuit malfunction |
01-15-2003, 06:04 PM | #13 |
Scooby Guru
Member#: 1847
Join Date: Jul 2000
Chapter/Region:
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Location: brokenmotorsports.com
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Jon
Well since you have reported the post for no good reason as at all if the super mods see fit that it is not viable then so be it. Why are you insisting on arguing, is this thread really bothering you? Dont click on it if it is. Why are you beings so apposed to a thread that is designed to help? WRX ce lights and WRX codes have absolutly nothing to do with the rest of the subaru line, so please give it a rest. Im politly asking you, if you have nothing to contribute to this thread that is pertinent and helpful, do not post here. thanks Jay |
01-15-2003, 07:26 PM | #14 |
Scooby Specialist
Member#: 10172
Join Date: Sep 2001
Chapter/Region:
TXIC
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P1443 Evaporative emission control system vent control function problem
I got this one today. I have a 02 WRX Auto. Mods are exhaust, Unichip, intercooler hoses, and CAI. Does anyone know what this means? Thanks, Torch |
01-15-2003, 09:03 PM | #15 |
Scooby Guru
Member#: 1847
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There is a soleniod that is controled by the ecu that is activated, when circusmstances are met for evaporative emmissions to be vented back into the engine.
I dont think any of your mods would affect that function. Since you do have mods, and ya know how finicky subaru is, you may want to just clear the code and see if it comes back, if it does I would take it to the dealer and have it checked. Jay |
01-15-2003, 09:48 PM | #16 |
*** Banned ***
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Vehicle:02 WRX Sedan Silver |
I don't know why Torch's search on that trouble code failed to uncover the WRX Check Engine Light Log thread. A quick scan of that thread will reveal at least 30 reports of this trouble code. In most cases, including mine, the problem was resolved by sending the ECU to Subaru HQ for a reflash.
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01-16-2003, 12:51 AM | #17 |
Scooby Newbie
Member#: 25761
Join Date: Oct 2002
Location: Smyrna,TN
Vehicle:2002 2.5 RS Alpine White |
Code: P0031, Front oxygen (A/F) sensor heater circuit low input.
Year/Make Model: 2002 Impreza RS Mileage: Approx. 7k Fix: (general) Replace/Clean front O2 Sensor (my case) Plug front O2 sensor back in Mods: Ganzflow Intake, K&N Panel filter, Borla Header (wrapped), Apex'i N1 Exhaust. |
01-16-2003, 05:57 AM | #18 |
Scooby Specialist
Member#: 3851
Join Date: Jan 2001
Chapter/Region:
MAIC
Location: WNY/NVA
Vehicle:2007 Outback Ltd. Champagne Gold |
Well .....2 of the most common reasons for a non blinking CEL:
1. not tightening the gas cap 2. overfilling the tank by trying to round off the sale to some $. Other common reasons are O2 sensor and knock sensor. I personally had the overfill problem which I fixed with a reset. OK...just my .02 |
01-18-2003, 07:43 PM | #19 |
Scooby Specialist
Member#: 15135
Join Date: Feb 2002
Chapter/Region:
NWIC
Location: Bend, Or. USA
Vehicle:95 GF WRX Black |
My wife's car:
'96 Outback Auto, 2.5, 155k miles, stock PO 400 - EGR Flow Malfunction Has had the code for quite some time. The CEL comes on about every 50-100 miles after clearing the code. Doesn't effect driveability at all. |
01-21-2003, 10:16 AM | #20 |
Scooby Specialist
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:2003 BMW Z4 Blue |
I got a check engine light last night but I have yet to get it pulled, I will be doing that after work today. But since were on the topic of Check Engine lights. When you pull a code don't you have to connect the two green harnesses and two black harnesses under the dash? Is that what there used for? Someone told me this and I'm not sure. The reason I ask this is cause I have both the green harness and one black harness and to black wires dangling there which seemed to go in the other black harness? I noticed when I had my dash of the other day but I have never touched them before or have ever had any codes pulled off my car before? Do you think Subaru will fix this for free, even though I have 78k miles now? Its there fault, they forgot the harness.
I'm not sure yet of what the code is but I'm pretty sure whats causing it. I just installed 2 10" subs and 2 222W amps and I already had a light weight battery. The lights dim evertime the bass hits even when going 70 mph at 3k rpm. I don't think the ignition getting enough power to fire properly. |
01-21-2003, 12:40 PM | #21 |
Scooby Specialist
Member#: 15135
Join Date: Feb 2002
Chapter/Region:
NWIC
Location: Bend, Or. USA
Vehicle:95 GF WRX Black |
ImprezedRS,
Connecting those wires will do nothing but make your CEL flash. On the OBDI cars (pre95) that was part of the self diagnosing computer, not on the later cars though. On your car, to the left of the steering column, on the lower side of the dash, will be a little door-type thing that flips down, that's where the OBDII port (plug in) is. Will Subaru fix it for free? Highly doubtful...your car has too many miles to be covered under warranty, and they sometimes make people pay to pull codes on warranty fixes. Many parts stores are pulling and clearing codes for free to get people in to buy parts, check that out first. It is probably something to do with your amp and power supply situation. Might need an Optima battery and HD alternator to keep the juice flowing. If your voltage gets below 12v, your car WON'T run, so get get it fixed ASAP, or you might be using your AAA... |
01-21-2003, 01:13 PM | #22 |
Scooby Specialist
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:2003 BMW Z4 Blue |
Thanks outback2.5HO, yeah I doubt that Subaru would fix it, all I wanted was the black harness put back on, the one that is missing. As far as getting the code pulled I have a friend that works for a Toyota dealership that is going to do that tonight. I have never done the scanning before so I didn't know about those black and green connectors but I did know about the OBDII port though. Yeah if it is the system that is causing this then the system will go before I will change the battery. I will never put in a hevy Optima battery. I like my lightweight battery, 13.5 pds compared to the stock I think was about 38 pds. I saved as much weight as I would with a carbon fiber hood.
Well I will post the results tonight of what my code is. |
01-21-2003, 09:18 PM | #23 |
Scooby Specialist
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:2003 BMW Z4 Blue |
Code: P0500 Vehicle speed sensor malfunction &
P1540 Vehicle speed sensor malfunction 2 2000 Impreza 2.5 Rs Mileage: roughly 78k Fix for problem: Havn't done it yet but need to check the wiring for my TCII and the reconections from removing the FieldsSFC-Hyper R. Its says if it is not throwing the P0720 Output speed sensor (vehicle speed sensor 2) circuit malfunction code and the speedo works to check the wring to make sure it has a 10ohm connection in the wiring from the ECU harness to the Gauge Cluster Harness. So I know it must be something in my wiring. I had him clear the codes and it has yet to throw the code again, so I tthink it was just a glitch. But I will be checking it again. Also the OBDII reader said that the code was set off at 2250rpms and at 0mph . Thats funny since I was already in third speeding up to 60 when the Check Engine light came on. |
01-25-2003, 06:59 PM | #24 |
Scooby Specialist
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MWSOC
Location: Anti-Russian Aggression Zone
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0107, & 0113
2000 Impreza RS (mods=full header back exhaust, cobb intake) Possible solutions= possible changing of MAP sensors Actual solution = my MAP sensor wire came loose and just needed to be plugged in again. below is a cut and paste from my original thread about this. Dammit!...My car chrew a CEL light Sat. night on my way home. I was stuck in traffic, when I saw an opening on the right lane. I gunned it and noticed the CEL when I was about 5000 or so RPM's. Then the car started giving me lip. Instead of idling like it's supposed to, it would rev up and then rev down like if it was following the beat of a ticking clock. My MR2 used to do that when it was low on coolant or was about to overheat, but the temp guage on the RS didnt' budge. I took the car in today to have the CEL code pulled and I got a: 0107, and 0113 code. I've included the pics of the print out so that, anyone who knows what that means, can tell me what happened http://forums.nasioc.com/forums/show...hreadid=235121 |
01-26-2003, 06:15 AM | #25 |
Scooby Specialist
Member#: 2267
Join Date: Sep 2000
Chapter/Region:
SCIC
Location: LA dentention core
Vehicle:00RS rutherforddesign.com |
[quote]Originally posted by obyone
[b]0107, & 0113 2000 Impreza RS (mods=full header back exhaust, cobb intake) Possible solutions= possible changing of MAP sensors Actual solution = my MAP sensor wire came loose and just needed to be plugged in again. below is a cut and paste from my original thread about this. [i]Dammit!...My car chrew a CEL light Sat. night on my way home. I was stuck in traffic, when I saw an opening on the right lane. I gunned it and noticed the CEL when I was about 5000 or so RPM's. Then the car started giving me lip. Instead of idling like it's supposed to, it would rev up and then rev down like if it was following the beat of a ticking clock................ My MR2 ........................used to do that when it was low on coolant or was about to overheat......................didnt' budge. How did [could] that happen? Last edited by Andrew Bacon; 01-26-2003 at 06:21 AM. |
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