iskoos
CEG'er
95 Ford Contour GL - 4cyl Automatic @ 170k
I have been trying to fix my erratic idle problem since March with no luck so far. The car idles so bad and if the engine is cold it will shut off within 2-3 seconds of firing up.
I have done so many things so far but none helped.
So far I have been retrieving the codes through counting CEL on the dash and recently I bought a scan tool and I was able to do a complete scan. After using the scan tool (AutoXray 5000), I retrieved the same KOEO (Key On Engine Off) codes as 335, 181, and 543. Scanner says 335 is on demand code and 181 and 543 are memory codes.
Then for the first time I was able to do KOER (Key On Engine Running) test. It was pretty cool to see this on a 13 year-old car.
Anyways, I got two different codes I haven't seen before: 172 and 336
So in short this is what I have:
KOEO Codes:
335 (On Demand meaning detected during the test)
181 (Memory)
543 (Memory)
KOER Codes: (Both must detected during the actual test)
172
336
Please do not look up and give me the textbook definition of these codes only. I already know them. We know that sometimes a specific code(s) may point a component that is not necessarily malfunctioning. I know some of the above codes point out the O2 sensor but it is new. I replaced it in February and I probably put only 500-600 miles on it before I got this problem.
I am getting 335 and it is known as DPFE sensor. That's replaced in February as well and just to make sure I replaced it again in the past summer but it didn't help.
The car sputters really bad at idle. When accelerate, there is no problem. The power is there and it is smooth. I am sure I can drive hundreds of miles on a highway as long as I don't need to stop. But as soon as I remove my foot from the accelerator and let the rpm goes down, engine starts sputtering badly and most of the time it will quit.
IAC valve??? Do not hold your breath, that was the second thing I replaced. I first cleaned it, didn't help and then bought a new one. No luck. It is not it.
Replaced PCV valve, cleaned oil seperator, replaced spark plugs, spark plug wires, ignition coil, fuel filter. I even tried new MAF sensor, nothing changed.
Also checked the EVR solenoid, charcoal canister, purge solenoid, cleaned TB, EGR passages etc. etc.
I did alot of work with no success. Friends are telling me to get rid of this car but I don't want to let her go. I have owned her for almost 10 years.
There are some really knowledgable guys among you, I would appreciate if you could share your thoughts on this matter.
Thanks in advance
I have been trying to fix my erratic idle problem since March with no luck so far. The car idles so bad and if the engine is cold it will shut off within 2-3 seconds of firing up.
I have done so many things so far but none helped.
So far I have been retrieving the codes through counting CEL on the dash and recently I bought a scan tool and I was able to do a complete scan. After using the scan tool (AutoXray 5000), I retrieved the same KOEO (Key On Engine Off) codes as 335, 181, and 543. Scanner says 335 is on demand code and 181 and 543 are memory codes.
Then for the first time I was able to do KOER (Key On Engine Running) test. It was pretty cool to see this on a 13 year-old car.
Anyways, I got two different codes I haven't seen before: 172 and 336
So in short this is what I have:
KOEO Codes:
335 (On Demand meaning detected during the test)
181 (Memory)
543 (Memory)
KOER Codes: (Both must detected during the actual test)
172
336
Please do not look up and give me the textbook definition of these codes only. I already know them. We know that sometimes a specific code(s) may point a component that is not necessarily malfunctioning. I know some of the above codes point out the O2 sensor but it is new. I replaced it in February and I probably put only 500-600 miles on it before I got this problem.
I am getting 335 and it is known as DPFE sensor. That's replaced in February as well and just to make sure I replaced it again in the past summer but it didn't help.
The car sputters really bad at idle. When accelerate, there is no problem. The power is there and it is smooth. I am sure I can drive hundreds of miles on a highway as long as I don't need to stop. But as soon as I remove my foot from the accelerator and let the rpm goes down, engine starts sputtering badly and most of the time it will quit.
IAC valve??? Do not hold your breath, that was the second thing I replaced. I first cleaned it, didn't help and then bought a new one. No luck. It is not it.
Replaced PCV valve, cleaned oil seperator, replaced spark plugs, spark plug wires, ignition coil, fuel filter. I even tried new MAF sensor, nothing changed.
Also checked the EVR solenoid, charcoal canister, purge solenoid, cleaned TB, EGR passages etc. etc.
I did alot of work with no success. Friends are telling me to get rid of this car but I don't want to let her go. I have owned her for almost 10 years.
There are some really knowledgable guys among you, I would appreciate if you could share your thoughts on this matter.
Thanks in advance