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Porsche 944 and 924

86 messages,  Last post on Nov 05, 2009 at 5:35 PM

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What is this discussion about? Porsche 944, Coupe, Convertible


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#38 of 86
Re: 1986 Porsche 944 Cruise control [cejr3] by todd82ta
Jul 14, 2008 (3:23 am)
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Replying to: cejr3 (Jul 14, 2008 2:47 am)

Yeah, there is a cruise module located under the hood, just in front of the battery on the passenger side. This sometimes goes bad. The only thing you can do really is just replace it. The 944 doesn't use any computer control for the crusie control, it's just a motor style module that connects in the engine bay.
#39 of 86
Re: 1986 Porsche 944 Cruise control [todd82ta] by cejr3
Jul 14, 2008 (10:03 pm)
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Replying to: todd82ta (Jul 14, 2008 3:23 am)

Thanks so much Todd! I am going to switch it out.
 
CJ
#40 of 86
1985 944 blower relay problem maybe by ironhorse1
Sep 06, 2008 (5:49 pm)
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1985 944 . The battery is discharging. finally heard the blower motor running (very faint) when I was replacing the battery once again. The blower screen/cover in place I could hear the faint sound of the motor running. Is it a RELAY, or the switch on the dash?
not knowing were to look,can I replace the relay first ? Need Help !!
Tom
#41 of 86
Re: 1985 944 blower relay problem maybe [ironhorse1] by todd82ta
Sep 06, 2008 (6:43 pm)
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Replying to: ironhorse1 (Sep 06, 2008 5:49 pm)

Hi IronHorse,
 
    Couple of things to consider. As with all Porsches, they are often over-engineered. Believe it or not, when you turn the ignition key in an early 944 to the on position. Even if the car isn't running, the VENT fan will run at 1/2 it's lowest speed. This is part of the mandated "flow-through" fresh air venting. The Porsche 944 actually has TWO cabin fan. There is the primary fan which is mounted front and center in the cowl area, this is called the "VENT FAN". The secondary fan is built into the A/C system under the passenger side dash. Although it's really odd... there are two fan controls (as you'll see). There is the huge A/C fan (which only recirculates air through the cabin) and the vent fan which brings in fresh air, and that is controlled by the knob a little bit lower down (to the left of the vent sliders).
 
So, as I mentioned, the vent fan will ALWAYS run when the key is in the ignition and anywhere other than OFF. If it's running with the key out of the ignition, then you have a problem.
 
HOWEVER... don't be confused (more about this overengineering stuff). When you've driven your Porsche 944... one of the radiator fans will remain ON (in a slow speed) when you shut the car off. The reason for this was to help lower the temperature of the radiator in case you start the car up again within a short period of time. The technical reason why this happens is because the fan switch is nothing more than a temperature sensor that is mounted on the drivers side rear of the radiator. The fan has a constant hot on one end, and a ground that persists through the sensor. When the sensor is hot (even when the car is off, and the key is out of the ignition) it will run. This is normal (although a bit annoying).
 
As long as you can make sure that this is what you've been worried about, then you shoudl be OK!
#42 of 86
Re: 1985 944 blower relay problem maybe [todd82ta] by ironhorse1
Sep 07, 2008 (4:31 am)
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Replying to: todd82ta (Sep 06, 2008 6:43 pm)

Thanks for the reply,,BUT...the battery is discharging due to a closed contact,leaving the battery to died after a week or so. There is NO key or start here. the car is stored
in my garage & not a daily driver,so after a week or two the battery is dead or at least needs a jump. the faint noise is from the the engine's bay, cowl near the firewall/windshield location. I believe the faint noise is the blower unit not turning off. If I disconnect the battery ,it goes off. place the cable back on the noise is there once again. No startup or ign. is needed to cause this problem. So I have to believe it's a relay or switch causing this "closed" circuit ? Where do I start ,the relay ; fresh air blower relay G1 sells for about 10 dollars. Is this it ? & where is it located on the dash? If it's not the relay ,can it be the switch on the DASH as you mentioned?
I can get both parts but would like to eliminate the battery discharge now. Perhaps its the Ign switch ,some one said,but with the key out can there be this problem?
#43 of 86
Re: 1985 944 blower relay problem maybe [ironhorse1] by todd82ta
Sep 07, 2008 (5:24 am)
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Replying to: ironhorse1 (Sep 07, 2008 4:31 am)

Hi IronHorse, ok, that noise you hear is definitely the vent fan. I DO believe there is a relay that controls this. However, since you have a 1985, I'm not totally sure. In 85, they changed the model half way through the year, and the two are completely different electrically, and somewhat mechanically as well (as well as a completely new interior). The easiest way to tell is... if you have the interior of a 924, then you have an early 85, if you have the same interior that the late 80s 944s have, then you have the 85.5. I don't know if you already know this, but for the sake of explanation, I figured I'd throw that in. On the old models, the fan relay I BELIEVE is located on the second row (further back). You'll want to check that. On the newer ones, I have no clue, but I am pretty sure there should still be a relay for it.
 
Also... I don't think this is it... but I would check. There is a motor (believe it or not) for the cruis control. In the older 944s (83-85), this motor is located on the rivers side, near the cowl, right inside the engine bay in front of the engine. When these go bad... they just run forever. A quick fix is to simply disconnect it's wiring harness. Not sure if this could be your problem, but I would just check it out to be sure. My 84 944 had a battery discharge problem, and that ended up being the culprit.
 
Hope that helps.
 
I would also suggest you check out www.RennList.com it's a really great web site and there are like several thousand people on that list with 944s.
#44 of 86
Re: 1985 944 blower relay problem maybe [todd82ta] by ironhorse1
Sep 11, 2008 (4:29 pm)
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Replying to: todd82ta (Sep 07, 2008 5:24 am)

Thanks for the suggestions,
The blower FAN ,sounds to be the problem,since I removed the battery cable the fan turns off,attach the batter leads and on it goes. there is NO key or IGN on .
So is it a RELAY? if so where is it located ? or the next step.....
Tom
#45 of 86
Fixer upper by skidder440
Sep 22, 2008 (9:13 am)
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To lady in Milwaukee. If I had to do it again, I would spend more for a cleaner car, the devil is in the details. I have an early 83, I think, under the hood it says March 1982. I have a booklet, the types dimensions and tolerances put out for Porsche on 944's. It says for Model 82,83 . What is the difference and is my March 1982 referred to as an early 83? Jon
#46 of 86
Re: Fixer upper [skidder440] by todd82ta
Sep 22, 2008 (10:13 am)
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Replying to: skidder440 (Sep 22, 2008 9:13 am)

Yeah, I completely agree. I just sold my 1984 Porsche 944, and took a huge loss. I had 8 cars, and my wife is pregnant so I thought I'd downsize to 6. Porsche had to go. I spent $1,200 buying the car, put about $4,000 into the car, and sold it for $2,000. It's just one of those things...
 
I kept some of the really rare pieces (like the Euro front bumper, etc). I do plan to get another one, but when I do I'll probably spend an extra 2 grand up front to save me from having to dump twice that into t later.
 
I've learned that, at least on a 944... for every $1,000 you save, you end up spending $2,000 to bring it to the condition you would otherwise have if you spent the $1000 in the beginning.
#47 of 86
Porsche 944 model 82, 83 by skidder440
Oct 01, 2008 (10:04 am)
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What is the difference between the 82 and 83. What do I call my March 82 944, is that an early 83 or something else? I have the 3 blade fans. My vin is WPOAAO949DN450293 my original registration shows YR. Model 82. My 944 is slow off the line, kind of feels fuel starved, it bucks a bit. I have new fuel injectors. After that first 3 seconds or so it performs flawlessly. The car came in around Port Hueneme California. What site can I go to, to see the paint choices in 1982? They are slightly different from 83 I believe. I can see the names but not the paint chips.

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