Rough Idle
Thread Starter
Cruising
Joined: May 2002
Posts: 10
Likes: 0
From: Rochester Hills MI
Rough Idle
Any suggestions? My 89 c-4 L98 has a rough idle when engine is warm. Its at the point that I have to slip it into neutral at a stand still just to keep it running. Just replaced the MAF, Throttlebody is as clean as a wistle, plugs appear to be fine. HELP!
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Rough Idle (jrc)
Clean the IAC pintel & its bore under the TB; reset base idle.
Check base timing.
Inspect vacuum lines for cracks.
Pull & inspect the plugs and inspect plug wires as well as dist cap.
Check base timing.
Inspect vacuum lines for cracks.
Pull & inspect the plugs and inspect plug wires as well as dist cap.
