zaxobs
Newbie
Hey Everybody! First post but I have been lurking for a bit ever since I bought my truck a while back. I have a 1990 Silverado RCLB C1500, with the 350/5.7L & auto trans.
For the most part it idles, drives, and starts up alright (or so it seems.) I get about 30psi of oil pressure at idle and climbs as I add throttle, and my temp gauge sits around 200 when warm. About 30% of the time when I shift out of park to reverse or drive, the engine cuts out and dies. Sometimes I can catch it and keep it alive with the gas pedal, but the stall happens quick. It seems to get worse when warm, but I am not 100% on that since it's a little inconsistent. It also happens on occasion when slowly coming to a stop, and has happened once when idling to warm up in the morning before I use it to go to work. Sometimes it throws a service engine light, but I just reset my ECM installing a new IACV so I'm not sure it's there at the moment.
I have been reading about what I should do to fix it, but I am kind of stuck on what to do next. I have replaced the IACV and done the ECM reset for it (which may have made my idle worse, I have a tach in the mail that I will install when it arrives to get some reference on the RPM). It has a new-ish EGR valve and solenoid, plugs, cap, and rotor but I will be re-checking those this weekend. It has a new O2 sensor, and I will be checking and replacing my CTS if it looks crusty. The throttle position sensor also looks fairly new, but I don't have a way of testing it. I also did a new fuel pump/filter when I bought it because it was sitting for a while b4 I did.
Come tomorrow morning I will try and read if it has any codes to get some more info & update this, maybe check for tension on the trans cable. I have read that the TCC solenoid in the trans can go bad but I think it would stall every time if that were the case, right? I don't really have a place to drop the trans pan to do that (except maybe kroger/payless, they would let me do it in their parking lot)
For the most part it idles, drives, and starts up alright (or so it seems.) I get about 30psi of oil pressure at idle and climbs as I add throttle, and my temp gauge sits around 200 when warm. About 30% of the time when I shift out of park to reverse or drive, the engine cuts out and dies. Sometimes I can catch it and keep it alive with the gas pedal, but the stall happens quick. It seems to get worse when warm, but I am not 100% on that since it's a little inconsistent. It also happens on occasion when slowly coming to a stop, and has happened once when idling to warm up in the morning before I use it to go to work. Sometimes it throws a service engine light, but I just reset my ECM installing a new IACV so I'm not sure it's there at the moment.
I have been reading about what I should do to fix it, but I am kind of stuck on what to do next. I have replaced the IACV and done the ECM reset for it (which may have made my idle worse, I have a tach in the mail that I will install when it arrives to get some reference on the RPM). It has a new-ish EGR valve and solenoid, plugs, cap, and rotor but I will be re-checking those this weekend. It has a new O2 sensor, and I will be checking and replacing my CTS if it looks crusty. The throttle position sensor also looks fairly new, but I don't have a way of testing it. I also did a new fuel pump/filter when I bought it because it was sitting for a while b4 I did.
Come tomorrow morning I will try and read if it has any codes to get some more info & update this, maybe check for tension on the trans cable. I have read that the TCC solenoid in the trans can go bad but I think it would stall every time if that were the case, right? I don't really have a place to drop the trans pan to do that (except maybe kroger/payless, they would let me do it in their parking lot)