Intermittent idle cut-out
enzeder at home.com
Tue Jul 24 10:52:28 EDT 2001
I'm having the same trouble, and as a point of reference, new items on my
car are the throttle switch, deceleration fuel cutoff valve (there's a TSB
about them failing open), ISV (Idle Stabilization Valve). Problem still
Have you tried this:
It may help. Maybe.
The last thing electrical in the system I can think of is the idle temp
sensor, which, if I'm reading Bentley right, is in the same area as the
SJM has an illustration, but reading the Bentley, I thought it was sharing
a connector on the after-run sensor. SJM is usually pretty accurate though:
I was going to run some leads to a multimeter inside the car so I could
watch what happened as the car warmed up. I was hoping to see it either
jump to 0 ohms or infinite. Bentley has a chart of expected resistances.
Would you let me know what you find? I'm frying bigger fish at the moment,
I suspect my fuel pump died (car just quit and won't start), but once I'm
up and running, I'll let you know if I find anything out.
At 08:45 AM 7/23/01 -0700, you wrote:
>I posted a message a couple weeks ago regarding an
>issue I was having with an idle that would go all
>whacky after a short while of driving.
>The car "fixed" itself, and I have probably driven
>3000 miles since I last had the problem. Well, it
>started again last Friday.
>Description: After ~15 minutes of driving in warm
>weather (say 80F+), the car will not idle without
>holding the accelerator down a fair bit. My shifts
>get jerky as the revs drop quickly when this happens,
>and the car frequently dies if I cost in neutral for
>any length of time. It has idled a couple times at
>~300 RPM, but not often. The car will pull fine at
>1.8 bar before and after this happens.
>Parts that are new and/or OK: cap/rotor, wires, FP
>relay, fuel pump, fuel pump check valve, intake system
>(no large vacuum leaks), MM hose etc.
>I really think it is something electrical that goes
>flaky after a certain time spent at temperature. I
>doubt that it is spark as it will idle as normal; it
>just needs additional throttle. My decel fuel shutoff
>is disabled so that's not it.
>So what is electrical that would affect idle fuel
>mixuture? Frequency valve I guess? Maybe the power
>to it is getting cut somehow and it won't idle. Would
>this cause my problems? Any other thoughts?
>Thanks in advance,
>Do You Yahoo!?
>Make international calls for as low as $.04/minute with Yahoo! Messenger
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