idling problem
Thread Starter
Instructor
Joined: Jul 2009
Posts: 223
Likes: 0
From: Timisoara, Romania
idling problem
hi,
my '91 engine dies in idle, I have ~45 psi on the fuel ramp, put new injectors, new spark wires, new fuel pump+filters and check the injectors with light, all seems to be ok, any hints ? may be a problem with the idle senesor or any sensors ?
thanks,
Dan
my '91 engine dies in idle, I have ~45 psi on the fuel ramp, put new injectors, new spark wires, new fuel pump+filters and check the injectors with light, all seems to be ok, any hints ? may be a problem with the idle senesor or any sensors ?
thanks,
Dan
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
Sounds like the IAC is gummed up. Take it out and clean it and the channels that feed it. Carb cleaner works, and you will also need new gaskets. Check for vacuam leaks first...WW
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
As others mentioned, the IAC should be your first check. I was tossing vacuum and EGR valve into the mix because they too can cause an engine, even a strong V8, to die at idle. If an EGR valve is sticking in the open position due to carbon build up, for example, then it will act like a big vacuum leak and the engine will die.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer