Date: Sun, 20 Dec 1998 18:52:38 -0800 From: Danny <dmorrownopsamnd.Stanford.EDU> Subject: Re: Ideas Needed: RPM Hunting at Idle
A quick fix. Doesn't cure everything, but might make sure the car doesn't stall when the engine is hunting. You can remove the air-mass meter (by way of the air filter canister) and gently spray carb cleaner on it. Careful not to break the wire inside, then you will have to go and get a new air-mass meter. This cured almost all my problems with hunting on my 88 SPG. danny On Sun, 20 Dec 1998, Douglas Swank wrote: > I would say the RPM hunting is normal *if* it's a turbo (due to the APC > system), but not to that extent. I have had an '86 9000T, an '89 9000CDT, > and my parents have had an '88 9000T and on all three normal idle would > cycle between approx. 800-950 RPM, but at nowhere near 25 Hz, more like 25 > cycles per minute. > > Three things that will oftentimes affect the idle are a bad AIC valve, a bad > turbo bypass valve, or a bad air mass meter. > > -Doug > > Johan LAUWERS wrote: > > > >I believe the hunting of the RPM is normal. > > > >My father had it on both his 9000's. > > > >Johan. > > > > > > > >
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