lean problems
09-25-05, 10:09 AM
#1
lean problems
ok ive had some lean problems for a while and have checked and gone through somethings and still no luck. heres what ive done so far
1. replaced all coils, spark plugs and wires
2. replaced intank and engine bay fuel filter
3. replaced o2 sensor
4. checked for vac leaks
5. verified injectors are working (now that the correct secondaries are in their whole other side story on that one)
now i just noticed today that the incorrect bac valve is installed on it. dont ask my why. i bought this car from a moron that should never touch a car again. from having the wrong driveshaft,ecu,afm,pressure sensor,injectors, and list of other stuff ive replaced it was a question how the hell this car ran in the first place.
compression is 85 in front and 95 in back. whats left to check? when i first start the car it starts rich but once the car warms up it goes very lean.
1. replaced all coils, spark plugs and wires
2. replaced intank and engine bay fuel filter
3. replaced o2 sensor
4. checked for vac leaks
5. verified injectors are working (now that the correct secondaries are in their whole other side story on that one)
now i just noticed today that the incorrect bac valve is installed on it. dont ask my why. i bought this car from a moron that should never touch a car again. from having the wrong driveshaft,ecu,afm,pressure sensor,injectors, and list of other stuff ive replaced it was a question how the hell this car ran in the first place.
compression is 85 in front and 95 in back. whats left to check? when i first start the car it starts rich but once the car warms up it goes very lean.
09-25-05, 05:56 PM
#7
Originally Posted by J-Rat
That narrow band is about as accurate as nothing.... What year/model is your car? Have you scanned codes for malfunctioning sensors?
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09-25-05, 10:41 PM
#10
HAILERS
Join Date: May 2001
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Are you using a digital meter to read the 02 sensor?
Also try this. Buy a water hose clamp that will clamp on the body of the 02 sensor. Attach a ground wire to it and connect the other end to the engine. Either that or make sure you have a good ground on the exaust pipes to the chassis.
Also try this. Buy a water hose clamp that will clamp on the body of the 02 sensor. Attach a ground wire to it and connect the other end to the engine. Either that or make sure you have a good ground on the exaust pipes to the chassis.
09-26-05, 06:38 AM
#11
Originally Posted by HAILERS
Are you using a digital meter to read the 02 sensor?
Also try this. Buy a water hose clamp that will clamp on the body of the 02 sensor. Attach a ground wire to it and connect the other end to the engine. Either that or make sure you have a good ground on the exaust pipes to the chassis.
Also try this. Buy a water hose clamp that will clamp on the body of the 02 sensor. Attach a ground wire to it and connect the other end to the engine. Either that or make sure you have a good ground on the exaust pipes to the chassis.
i tried pulling the codes and i got nothing the check engine light didnt even light up.
09-29-05, 04:41 PM
#19
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so the only thing your going off for your mixture is the narrowband 02 sensor?
Any vacuum leaks on the engine side of the afm. (Seems like it would make it run lean to me) Just an idea
Any vacuum leaks on the engine side of the afm. (Seems like it would make it run lean to me) Just an idea
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