truck jumps forward when at a stop light

Asked by Guru9BTR55 Jun 11, 2021 at 06:28 PM about the 1998 Chevrolet C/K 2500 Cheyenne LB HD RWD

Question type: Maintenance & Repair

When at a stop light the truck wants to keep jumping forward even with full
break, changed out everything with no luck??? When in neutral no problem at
all runs like new.

2 Answers
41,220

TDolby answered 3 years ago

Changed everything? It must be related to the throttle and is electrical in nature.

Mark helpful
27,530

oilyspill answered 3 years ago

What are idle rpms in drive, when problem is ongoing? I can't think of anything except hi rpms that would make it jump? Make sure throttle valve closes all the way. Clean throttle bore and around throttle plate. Check and clean iac. Any applicable trouble codes?

Mark helpful

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