Out of hibernation and back on the road again!
As you all recall, my truck would always stall while idling at stop signs and stop lights.
Running out of options, I played around with Throttle control sensor to see if it would effect idle performance and hopefully stop the stall problem. This action recorded two engine faults.
A) Throttle Control Sensor Fault,
B) Engine Coolant Temperature Sensor Fault.
Set back Throttle sensor to original state and the error for this sensor went away but from here on, the Coolant temp sensor fault persistently remained. I replaced the Engine Coolant Temperature Sensor (ECT) and Halleluiah! I have driven it for 100 miles since and no stall and it passed California s strict smog test beautifully. After spending $1300 replacing and or cleaning many parts, a $13 sensor fixed the problem. For 8 months that I was dealing with stall problem, the truck neither generated an engine fault nor the temperature gauge indicated anything other than the normal driving temp until I messed with Throttle control sensor. How and Why? Well, at this point I don t care.
In any case, thanks to all those who made suggestions and recommendations.
Saturday, September 8th, 2012 AT 7:27 PM