Cale N
Newbie
Service Engine Light and Hard Shifting..
Specs
1994 K1500 Automatic 5.7
Symptom
Check Engine light on, hard shifting, engine stumbling at idle/stopped.
Relevant Info
The check engine light comes on only after cold starts. Before the light comes on the truck feels and drives perfectly fine, and can barely feel it shift, idles fine. About a mile down the road, the light pops on and all of a sudden every single gear shift feels like the transmission is about to go out. When I slow to a stop the engine stumbles (I think idle searching). If I stop the truck and turn it off for about 10 seconds and start it back up, the light is gone and it drives fine. It drives perfectly fine and the light doesn’t come back on, I believe this has something to do with the fact that the truck is already warm.
Changed plugs yesterday and didn’t have an effect, distributor is new and timing and idle are perfect.
Appreciate the help.
Specs
1994 K1500 Automatic 5.7
Symptom
Check Engine light on, hard shifting, engine stumbling at idle/stopped.
Relevant Info
The check engine light comes on only after cold starts. Before the light comes on the truck feels and drives perfectly fine, and can barely feel it shift, idles fine. About a mile down the road, the light pops on and all of a sudden every single gear shift feels like the transmission is about to go out. When I slow to a stop the engine stumbles (I think idle searching). If I stop the truck and turn it off for about 10 seconds and start it back up, the light is gone and it drives fine. It drives perfectly fine and the light doesn’t come back on, I believe this has something to do with the fact that the truck is already warm.
Changed plugs yesterday and didn’t have an effect, distributor is new and timing and idle are perfect.
Appreciate the help.