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Contour is instantly stalling after starting?????

C

cway77

New CEG'er
Joined
Feb 25, 2003
Messages
12
Hello,

Well what a great way to start out a Monday. Contour started up this morning and just instantly dies. Had to limp it to work with giving constant gas. I have a CEL light on right now which is 1131 that I haven't fixed yet and have let go for a while which isn't good but wonder if this could be related to the problem. Would really appreciate anyone's insight on this problem before taking it in. Could it be the battery or alternator?? Thanks so much.
 
Stalling after starting

Stalling after starting

Is your curb idle totally gone? I lost my curb idle at about 40,000 miles.
Idle speed sensor failed.
 
From TSB, some reasons for a P1131. Bank 1 (Firewall side) Upper Sensor. How old is the sensor? If more than 75K miles, I would consider changing that.

P1131 - Lack of HO2S-11 Switch, Fuel Trim at LimitThe HEGO Sensor is monitored for switching. The code will set when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit.

Electrical:
· Short to VPWR or VREF in harness or HO2S
· HO2S circuit shorted to Ground
· Water in harness connector
· Open circuit
· Corrosion or poor mating terminals and wiring
· Damaged HO2S
· Damaged PCM (other DTCs should be present)

Fuel System:
· Excessive fuel pressure (stuck fuel pressure regulator, restricted fuel return lines, etc.)
· Leaking/contaminated fuel injectors or fuel pressure regulator
· Low fuel pressure or running out of fuel (fuel pump concern, fuel supply line restrictions, low fuel level, etc.)
· Vapor recovery system (stuck VMV, etc.)

Induction System:
· MAF contamination
· Air leaks between MAF and throttle plate
· PCV system / Other vacuum leaks
· Improperly seated engine oil dipstick

EGR System:
· Leaking gasket
· Stuck EGR valve / Leaking diaphragm or EVR

Base Engine:
· Oil overfill
· Incorrect cylinder compression
· Exhaust leaks before or near the HO2S
· Secondary air stuck on
 
Wow thanks for the detailed reponse Tony its much appreciated. Last night I actaully took it back to Advacned and was getting a different code of 0171 which is still linked to the same sensor from what I understand but actually took off MAF sensor cleaned that and spray the throttle body down with cleaner good, then removed IAC valve and cleaned that out good and she is running like a champ. Never idled so good. What happens if I don't replace the sensor?? I have been running with the check engine light on for quite sometime and just wondering if there is any long term damage that I am doing at this point? Thanks.

Chad
 
Running at a rich limit will, quicker than normally, ruin your catalytic converters. The option then would be to replace them, remove them and replace them with headers, or gut them. (listed in order of price)
 
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