Ok..spoke too soon....Rough Idle/Stalling
10-20-2003, 10:29 AM
#1
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Ok..spoke too soon....Rough Idle/Stalling
Gents,
Ok changed out my RS2 Injectors and RS2 MAF back to stock units and replaced my O2 sensor this weekend. I did this due to the fact that the car was running very rich, as suspected...which destroyed my O2 sensor...causing a rough idle and CEL.
Replacing the above did fix my "upper" sporadic idle and CEL issue however now I am getting a low idle/stalling problem. My ISV seems to be OK and is clean but this stalling problem is curious.
Any ideas? Bad O2 Sensor (Borg-Warner Part#OS702)? As no Bosch were available at NAPA, Checker, or AutoZone? Output tests on ISV "sound" good, as I can hear the valve open and close. Perhaps Fouled plugs due to rich mixture could cause stalling? Bad stock injector after re-install?
Other then the idle the car is running FAST and strong!
Thx
cp
Ok changed out my RS2 Injectors and RS2 MAF back to stock units and replaced my O2 sensor this weekend. I did this due to the fact that the car was running very rich, as suspected...which destroyed my O2 sensor...causing a rough idle and CEL.
Replacing the above did fix my "upper" sporadic idle and CEL issue however now I am getting a low idle/stalling problem. My ISV seems to be OK and is clean but this stalling problem is curious.
Any ideas? Bad O2 Sensor (Borg-Warner Part#OS702)? As no Bosch were available at NAPA, Checker, or AutoZone? Output tests on ISV "sound" good, as I can hear the valve open and close. Perhaps Fouled plugs due to rich mixture could cause stalling? Bad stock injector after re-install?
Other then the idle the car is running FAST and strong!
Thx
cp
10-20-2003, 11:56 AM
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Well it "may" have been dirty fuel or clogged FF....
I was at about 1/8th tank of fuel..so filled up on some clean Prem. and added a bottle of STP Fuel system cleaner and right after that my idle problem "seemingly" is better. Will repost follow-up upon firm determination.
10-20-2003, 01:43 PM
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Re: Ok..spoke too soon....Rough Idle/Stalling
I have had this happed twice in 3 years--the first time I had washed off my engine and got water down in the plugs--had to pull off cover and dry them off. CURED
The second time it was a power stage output, it would run fine then just all of the sudden start to miss and studder, then just magically idle fine, this started when I was at a stop light one night. It did it several other times after that at idle AND while driving. Ordered one, switched it out, still did it, put that one back on, swithced the other remaining one and CURED.
Good Luck
D
The second time it was a power stage output, it would run fine then just all of the sudden start to miss and studder, then just magically idle fine, this started when I was at a stop light one night. It did it several other times after that at idle AND while driving. Ordered one, switched it out, still did it, put that one back on, swithced the other remaining one and CURED.
Good Luck
D
10-20-2003, 01:55 PM
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You sure it's not the stiffer wastegate spring?
When I left my wastegate spring sensor plugged in with my stiffer wastegate spring in, the car would stall/act funny. Try unplugging your wastegate spring sensor.
-Mike.
-Mike.
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