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Corvette Forum Archive (38 950 posts)
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Subject:
Re: l98 strange behavior
From: "Bob" <rclearyiii(at)nc.rr.com>
Subject: Re: l98 strange behavior
Lines: 26
Date: Sat, 28 Jun 2003 23:49:10 GMT
NNTP-Posting-Host: 24.211.181.218
________________________________________________
Just a thought...it may also be your throttle postion switch.
"DAVE GEE" <alfansu-xnospamx-(at)gci-net.com> wrote in message
news:vfq83u5ubafk9b(at)corp.supernews.com...
> Hi group:
> I have an 88 conv. that is suddenly running strange, starts
> right up and runs at about 900rpm for about 2 secs. then
> dies. It will do this a couple of times, then it will start and
> run at around 6 to 900 rpm (hunts) with a problem taking
> any throttle until about 1/3 throttle, then will take off.
> as it warms up the problem seems to get a little better but
> it is never right, with a flat spot at small throttle openings.
> No light or codes associated with this, thinking maybe
> coil (there are occasional backfires when trying to give it
> more throttle).
> Any thoughts on diagnosis or similar problems greatly
> appreciated!
>
>
> TIA Dave G.
>
>
>
From: "DAVE GEE" <alfansu-xnospamx-(at)gci-net.com>
Subject: Re: l98 strange behavior
Date: Sat, 28 Jun 2003 21:12:07 -0700
Lines: 38
________________________________________________
"Bob" <rclearyiii(at)nc.rr.com> wrote in message
news:WPpLa.105397$_w.5798287(at)twister.southeast.rr.com...
> Just a thought...it may also be your throttle postion switch.
>
>
> "DAVE GEE" <alfansu-xnospamx-(at)gci-net.com> wrote in message
> news:vfq83u5ubafk9b(at)corp.supernews.com...
> > Hi group:
> > I have an 88 conv. that is suddenly running strange, starts
> > right up and runs at about 900rpm for about 2 secs. then
> > dies. It will do this a couple of times, then it will start and
> > run at around 6 to 900 rpm (hunts) with a problem taking
> > any throttle until about 1/3 throttle, then will take off.
> > as it warms up the problem seems to get a little better but
> > it is never right, with a flat spot at small throttle openings.
> > No light or codes associated with this, thinking maybe
> > coil (there are occasional backfires when trying to give it
> > more throttle).
> > Any thoughts on diagnosis or similar problems greatly
> > appreciated!
> >
> >
> > TIA Dave G.
I tried to find a vacuum leak with propane but no success,
no audible hiss either, would the throttle pos. throw an alarm?
I checked the plugs and they look ok, at night I can see no
arcs in the ignition. don`t know how to test the coil in the cap
except to replace. Normally I would suspect a #32 egr problem
as this has some of the earmarks but again no code or svc eng
light. Well maybe try to put a cap and coil on tomorrow. any other ideas
appreciated!
TIA Dave G.
From: Ray <ray.rayz(at)verizon.net>
Subject: Re: l98 strange behavior
Lines: 49
Date: Sun, 29 Jun 2003 19:40:48 GMT
NNTP-Posting-Host: 141.157.62.242
________________________________________________
I would look ar removal of the throttle body for a complete cleaning.
Do not try to do it on the car. Just for grins, I would also replace
the throttle position sensor and set it properly with a digital
voltmeter. Neither if these tasks are very complicated.
Ray
DAVE GEE wrote:
> "Bob" <rclearyiii(at)nc.rr.com> wrote in message
> news:WPpLa.105397$_w.5798287(at)twister.southeast.rr.com...
>
>>Just a thought...it may also be your throttle postion switch.
>>
>>
>>"DAVE GEE" <alfansu-xnospamx-(at)gci-net.com> wrote in message
>>news:vfq83u5ubafk9b(at)corp.supernews.com...
>>
>>>Hi group:
>>>I have an 88 conv. that is suddenly running strange, starts
>>>right up and runs at about 900rpm for about 2 secs. then
>>>dies. It will do this a couple of times, then it will start and
>>>run at around 6 to 900 rpm (hunts) with a problem taking
>>>any throttle until about 1/3 throttle, then will take off.
>>>as it warms up the problem seems to get a little better but
>>>it is never right, with a flat spot at small throttle openings.
>>>No light or codes associated with this, thinking maybe
>>>coil (there are occasional backfires when trying to give it
>>>more throttle).
>>>Any thoughts on diagnosis or similar problems greatly
>>>appreciated!
>>>
>>>
>>>TIA Dave G.
>>
> I tried to find a vacuum leak with propane but no success,
> no audible hiss either, would the throttle pos. throw an alarm?
> I checked the plugs and they look ok, at night I can see no
> arcs in the ignition. don`t know how to test the coil in the cap
> except to replace. Normally I would suspect a #32 egr problem
> as this has some of the earmarks but again no code or svc eng
> light. Well maybe try to put a cap and coil on tomorrow. any other ideas
> appreciated!
>
> TIA Dave G.
>
>
>
>
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