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Subject:
L98: starts, but won`t keep running.
From: "Dave Gee" <davelgee(at)hotmail.com>
Subject: L98: starts, but won`t keep running.
Date: 17 Oct 2005 15:54:47 -0700
Lines: 20
NNTP-Posting-Host: 4.240.240.97
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Hi group:
I have an 89 L98 conv. I am having a problem with it, first thing in
the morning it will start, rev up to about 12-1500 rpm and then idle
down and die. It will not restart after this unless let sit for 5 or
10 mins. then it will repeat the performance.
No codes are shown, and it is getting spark, even when not starting.
The fuel rails are pressurized (not sure how much pressure) It seems
like the injectors are not putting out gas or perhaps the throttle
position is unknown?
Trying to get it to keep running with the throttle on the initial
start just kills it, I suspect something to do with not getting enough
fuel in the mixture.
Anyone experience a similar problem or have any ideas on how to
diagnose this further?
TIA
Dave G.
From: PJ <pj4380(at)yahoo.com>
Subject: Re: L98: starts, but won`t keep running.
Lines: 43
Date: Mon, 17 Oct 2005 20:29:51 -0700
NNTP-Posting-Host: 68.6.135.254
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Dave Gee wrote:
> Hi group:
>
> I have an 89 L98 conv. I am having a problem with it, first thing in
> the morning it will start, rev up to about 12-1500 rpm and then idle
> down and die. It will not restart after this unless let sit for 5 or
> 10 mins. then it will repeat the performance.
> No codes are shown, and it is getting spark, even when not starting.
> The fuel rails are pressurized (not sure how much pressure) It seems
> like the injectors are not putting out gas or perhaps the throttle
> position is unknown?
> Trying to get it to keep running with the throttle on the initial
> start just kills it, I suspect something to do with not getting enough
> fuel in the mixture.
> Anyone experience a similar problem or have any ideas on how to
> diagnose this further?
>
>
> TIA
> Dave G.
>
The shop manual (Section 6E) and a pressure gauge will save you time and
a bundle of dollars throwing parts at an unknown problem. Without codes
though even that won`t be easy.
Gentle throttle tends to rule out an idle air circuit failing to open.
Since you know spark is OK then its time to figure out what`s happening
first. Is the fuel pump shutting down or the injectors all shutting off
with plenty of pressure on the rail.
If the engine runs for 2 seconds and then dies of fuel starvation, it
could be failure of the ECM to receive a pulse train from the
distributor --that will shut down the injectors. I`ve seen that in a
350tpi Camaro. That could be a broken wire from the distributor to the
ECM or a bad distributor module.
You might also pull the vacuum line on the fuel pressure regulator and
see if there`s gasoline leaking from the wet side to the vacuum side.
Best to get out the book.
PJ
From: =?windows-1252?Q?Soot_Bull_Jeep=99?= <ding(at)dong.com>
Subject: LA Area Vette Shops/Engine Guy ?
Date: Wed, 31 Mar 2004 23:38:16 -0800
Lines: 11
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Looking for referrals for a RELIABLE shop/engine guy to
swap/rebuild my `92 LT-1.
Anyone?
TIA
SBJ
--
............`cuse me whyl I kiss tha sky...
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