My car is sick

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Jerry Hennelly - 01 Feb 2004 23:31 GMT

Hello all,

I'll give the story as complete as I can:

I took my 1987 944na into the shop about 5 days ago and had the oil pressure
sender and the fuel filter replaced (all parts are OEM).

When I got the car it was running fine. In fact I noticed some smoothing
out at higher RPMs that I attributed to the new fuel filter. Also the oil
pressure gauge no longer jumped around, indicating the sender was working
properly.

I drove the car for a few days after that and had it up on a lift to have a
tech check something out. The tech did nothing to the car, it was just a
visual inspection. After that I drove the car until last night, when it was
parked until about 10:00 am today. It was about 3 degrees last night, but
it has been that way for a few nights now.

Upon turning the key, the car started, idles very low and died when I took
my foot off of the gas. After I get the car running for a few minutes (by
keeping my foot on the gas) it will stay running, but at a very low idle
seemingly very near stalling.

Any help will be greatly appreciated.

Thanks,

JH

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Paddington - 02 Feb 2004 00:54 GMT

> Hello all,
>
[quoted text clipped - 24 lines]
>
> JH

Hey Jerry,

I went through something similar in December when we first experienced sub
zero temperatures here in the Midwest. My problem ended up being fuel line
freeze, which is easily curable by buying a bottle (or two) of isopropyl
fuel line deicer. Empty a few bottles in the tank, give it a few hour for
the heat to expand throughout your fuel system and give it a go. If that
doesn't work then I would start checking the obvious like fuel pressure,
fuel pumps, etc. I would highly doubt that the recent repairs would have
caused this, especially since the car ran so well after you got it back. If
you don't have a winter weight oil in the motor, do that right away. I use
Castrol Syntec 5W-50 and it works so well in the winter that I was out
driving the other morning when it was -20F.

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Neil Harrington - 27 Feb 2004 22:42 GMT

This may sound obvious but have you checked the throttle closed switch..
this switch puts the ECU into Idle mode when the throttle is closed. If its
faulty it gives exactly the symptom you suggest. You should here it click
when the throttle is moved off fully closed but you should check it with a
mutimeter as well.
good luck

> > Hello all,
> >
[quoted text clipped - 41 lines]
> Castrol Syntec 5W-50 and it works so well in the winter that I was out
> driving the other morning when it was -20F.

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