1995 GMC Jimmy mileage: 95,000. I have recently been having trouble starting my truck. It is cranking but won't start. Eventually it will start, but when it does it usually backfires a couple of times and then settles down. After it is started, it runs great. I took it in to the shop and they ran some diagnostics. They said it had a lazy throttle so they replaced the TPS (Throttle Position Sensor). It didn't help. They also replaced the spark plugs. Since it runs great after it is started, I am wondering if it would have something to do with the choke. I'm not even sure how the choke works on a fuel injected vehicle, but I'm guessing there is something that functions like a choke. The shop mentioned something about a CPI unit. Thanks.
have the same problem?
Monday, January 10th, 2011 AT 11:36 PM