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Heating and Ventilation

90 944S2 Interior Fan Operation

Heat blows from vents even with blower control turned all the way counter-clockwise (lowest setting) and temp knob set to "0" (lowest setting); sometimes it stops blowing hot after driving about 10 - 15 minutes.

1986 944 Turbo Interior fan stopped working

My fan suddenly stopped working the other day and I'm not quite sure how to proceed. When I jump terminals 30 and 87, the high speed on the fan blower works. With the current relay in, there is nothing, so I do have a new one coming. All of the fuses are good. The other possibility I'm told is the resistor. Is there a way to test that or not and what other items could/should I check. Thank you. 


944 S2 Mysterious Coolant Disappearance

Radiator doesnt seem to be holding fluid did overheat can't find leaks any suggestions..

How to diagnose a 944 climate control issue

My 944 recently suffered from "all heat all the time".  My troubleshooting process when like this:

#1 - The most frequent climate control issue with 944's is broken plastic clips that hold the push rods for the air damper doors.  Sure enough, I had a broken clip.  I replaced the clip and now I have "no heat all the time". 

HVAC controls

Model: 924S, Year:1987, Mileage:208K, Type of use:Both Street & Track
After having sat for several months while waiting/undergoing an engine change, the controls for cabin temperature on my '87 924S have frozen in the "hot" position, only able to slide toward the cool side about halfway, then moving back toward hot. I recall seeing somewhere that this is fairly common, but can't find anything on what I think I read. My question: Is there a "fix" for this, or am I on the hunt for a working panel/controls?

Auxiliary fan doesn't come on after parking the car

Model: 944S2, Year:1989, Mileage:130000, Type of use:Street use only
I have 130,000 km on my 944S2 which came from Japan to Canada. The auxiliary fan doesn't come on after I park the car yet in my 1987 944 the auxiliary fan came on most of the time after parking the car.My a/c compressor (3yr old rebuilt) packed it in a few weeks ago and a club member said that it happened because of running too hot. Is this true and what are the reasons the auxiliary fan doesn't come on?

Heat then no heat from 968 heater

Model: 968, Year:1992, Mileage:139000, Type of use:Street use only
Hi Bill,I have read most every item in the database about the heater and am not finding a solution, I don't think. When I first start my car (92 Porsche 968), the heat comes on for a bit and then it stops with only outside temperature air blowing through rather than heat. Can you suggest a possible fix for this?Additionally, my car runs cooler with the a/c on than with the heater on and am wondering if this may be related to the problem.Thanks,Monte Olsen

air conditioning

Model: 968, Year:1993, Mileage:80000, Type of use:Street use only
When I turn on my AC, the RPM's drop severly and it almost stalls the engine. Shouldn't the engine speed kick up to compensate for the AC drag on the engine? What can I do to fix this.......other than raising the RPM's manually with the gas pedal?

a/c hose numbers

Model: 944, Year:1987, Mileage:124,00, Type of use:Street use only
I have found 2 part numbers for two hoses that look to be exactly the same, but are they? I need the hose from the compressor to the condenser for an 87 944 N/A. Hoses #944 573 097 11 and #944 573 097 09 both show up and look the same. can either be used?


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