stalls when cold
Thread Starter
Intermediate
Joined: Sep 2013
Posts: 43
Likes: 0
From: Bear Delaware
stalls when cold
Good Morning..... I have an 89 C4 base cp. Bought in September. Try to drive it once a week. Starts right up and idles fine when weather is warm. Since weather has changed and is much colder I've noticed my car will start right up however, it will stall several times. I have to rev it up and keep it at 1100-1500 rpm's till coolant temp is around 110 degrees.
After I drive it to "wherever" It will start fine. No stalling.
Any ideas as to what may be causing the excessive stalling when weather is cold?
Thanks
Joe
After I drive it to "wherever" It will start fine. No stalling.
Any ideas as to what may be causing the excessive stalling when weather is cold?
Thanks
Joe
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
I agree with everything the above poster said, except the CTS sensor thing. The computer will only go into closed loop when the IAT or MAT sensor reads 140 degrees and the CTS sensor reads 160.
I would start by cleaning your throttle body and checking the condition of your air filter.
I would start by cleaning your throttle body and checking the condition of your air filter.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
I agree with everything the above poster said, except the CTS sensor thing. The computer will only go into closed loop when the IAT or MAT sensor reads 140 degrees and the CTS sensor reads 160.
I would start by cleaning your throttle body and checking the condition of your air filter.
I would start by cleaning your throttle body and checking the condition of your air filter.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
if CTS reading higher than ambient temp ie....100 when actual outside temp is 30...ecm command would be be lean, on cars with cold start injector may not be turned on. EGR solenoid stuck on could also be a concern. Closed loop is more controlled by O2 sensor(s) and there is a default timer for O2 start working.
