Check engine light in '86 5kcstq when accelerating

[Luke Jackson]

On Thu, 01 November 2001, "Bernard Littau" wrote:

>
> Luke wrote:
>
> First of all, i would like to thank all who replied to my problem of hot
> starts, if sure it's the check valve now.  Another thing the car has alwa=
ys
> done since i had it is whenever i step on the gas, the check engine light
> comes on.  you kinda have to step hard, not flooring it, but at a certian
> point in comes on.  If i let off the gas a little it goes out.  I know th=
e
> book says this could be ncorrect octane, but i always use 93.  Any of you
> BTDT?  TIA,
>
> Hi Luke,
>
> I can't see how the check valve would cause your hot start problems and n=
ot
> also cause cold start problems.  I'd look elsewhere.  Start by making sur=
e
> your distributor is correctly aligned.  I had a hot start problem that wa=
s a
> weak Hall Sensor, but that's a rare one.  The distributor could be on the
> edge of the correct timing window, and drift over the edge from time-to-t=
ime
> when the car gets hot.  Might even be related to your check engine light.
>
> If the check engine light is coming on while you drive, intermittently wh=
ile
> under acceleration, it can be for a number of reasons.  The best way to t=
ell
> which reason is to drive the car such that the light comes on, then pull
> over, and without shutting off the car, pull the ECU codes.
>
> See:
> http://www.sjmautotechnik.com/ecuf.html
> for how to pull the codes.  Elsewhere on Scott's site you will find a
> description of the codes, and gobs of info on how to fix these problems.
> Use Scott's site to diagnose this problem, and fix it, then send Scott so=
me
> small amount of money via PayPal.
>
> Once you pull the codes, we can give you lots more advice...
>
> Best,
>
> Bernard Littau
> Woodinville, WA
> '88 5ktq

I am pretty sure that the starting problems are caused by the check valve, =
seeing how i can't start the car at all now.  It must have been slowly goin=
g bad.  But as regards the light it doesn't come on once and a while, its a=
ll the time, but only when i step on the gas.   i got the ECU codes and the=
y were,
 the intake temp sensor or inclusive wiring, (could this be why I am only g=
etting 1.2 on the boost?)  the hall sender in the Dist.  and the RPM sensor=
.  Any help would be appreciated!!  TIA


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