1986 Porsche 944 Today my idle speed jumped to 2500 and won

POPKIH

MEMBER
1986 PORSCHE 944

Engine Mechanical problem
1986 Porsche 944 4 cyl Two Wheel Drive Manual

Hello folks,

I drove my 1986 Porsche 944 (non turbo) for more than an hour on the highway for the first time today. I was driving really fast on the way back and drove 90 to 110 for several miles (again for the first time). When I downshifted to slow to the speed limit I noticed that the car's transmission didn't slow me down as usual. Noticing something was wrong I put the car in Neutral and noticed that it was idling at 2500 RPMs instead of 1000. The RPMs actually go up when I slow down and put it in neutral. The car did get pretty hot. Online I've seen suggestions of air intake leak or TPS gone bad. I need to get this fixed ASAP and need your help. The throttle cable is fine and isn't too tight.

Thanks

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Inspect and test the idle positioner solenoid, airflow meter, and throttle position sensor, idle speed and throttle actuator

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Monday, July 26th, 2010 AT 5:40 AM

POPKIH

MEMBER
8 POSTS

It was a simple case of the Idle screw becoming loose from vibration and increasing the distance to the idle plate or stopping point. A friend grabbed it and twisted it a few times and all my worries of hundreds of dollars in repairs went out the window.

There is another issue you may have a suggestion for and that is the temp gauge. It stopped working about a week ago. Before that it worked, then didn't, then did less occasionally then didn't again until finally. Nothing. Sending unit? Gauge? Guessing it probably isn't the thermostat though, right? How can I check it out myself?

Your help was greatly appreciated and I hope to hear you thoughts on the gauge issue : )

Thank You!

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Monday, July 26th, 2010 AT 5:12 PM

RASMATAZ

MECHANIC
75,992 POSTS

One of this 2 -coolant temperature sensor or the engine temperature gauge sending unit/gauge switch- is feeding the engine temperature back to the temperature gauge-nspect and test also the wire to it

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Monday, July 26th, 2010 AT 7:52 PM

POPKIH21

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1 POST

Popkih21
PostPosted: Wed Oct 13, 2010 1:31 pm Post subject: 1986 Porsche 944 Steeing rack gone bad?
Steering problem
1986 Porsche 944 Two Wheel Drive Manual

Here is where I am leaking power steering fluid out of the Steering Rack. It looks like the hole is threaded and may be missing a plug but there was a black gasket/plug/seal in this hole before and it didn't leak at all before (ok...maybe a drop or two)

Any info on this situation would be Greatly Appreciated!!!

Thanks in ADVANCE : )