Re: 5 cyl. lumpy idle

[Jason Aamodt <jason-aamodt@utulsa.edu>]

I had a similar expereince to yours, and it turned out that the vaccuum
system had a small leak (the noise).  Maybe you opened up an old hose with
the simple green/ hose spray?  On finding and replacing the part, mine went
back it a nice idle.  I've read about the horror stories of finding these
leaks, but I found the job to be easy if you're willing to get dirty.  Just
start on one hose and massage it with the engine running.  Listen for a
change in the noise.  When it changes, you're close.  


At 09:16 PM 6/21/1998 -0400, Jim Griffin wrote:
>The Car: QSW - 5 cylinder engine
>
>The Problem: After sitting for a bit (i.e. enough to cool down), the car
>starts okay, but the idle is real lumpy... to the point where it wants
>to die out. If I give it some gas, it hesitates a bit, almost coughing
>out, then it catches and revs fine. Once it seems to warm up a bit, it
>idles okay. Once I drive it, it runs fine, and idles okay at stop lights
>etc. If I restart it warm, it is okay.
>
>FWIW, I cleaned the engine compartment yesterday, with Simple Green and
>a garden hose. I didn't blast the engine compartment, but... did
>something get wet or rusty or whatever that might have caused this? If I
>recall correctly, after washing it, it started, idled, and ran fine. It
>wasn't until this morning that it began doing the above. (FWIW, if I
>recall correctly, when I took it for a drive after washing it, I heard a
>high-pitched whine... kinda' like a turbo.. or a buzzing. I don't think
>I hear that noise now.)
>
>Or... is it a matter of coincidence, and my ISV is finally shot? How do
>I tell? Would a bad ISV only show signs at startup, or all the time
>(i.e. at stop lights with a warm engine)? If it's the ISV, approximately
>how much for one?
>
>Anything else that could cause these symptons, at 101k miles?
>
>Thanks in advance.
>
>P.S. I'm still unsubbed, so please CC: me if you post a response to the
>list.
>
>--
>                     Jim Griffin
>                 ICQ # 1315286
>               JGriff@pobox.com
>           http://pobox.com/~jgriff
>     http://wwp.mirabilis.com/1315286
>'92 Audi 100S - '87 VW Quantum Syncro
> "Perception is often stronger than reality!"
> ------------------OOOO------------------
>
>
>