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Coupes & Convertibles Porsche 911 Porsche 944 and 924
86 messages, Last post on Nov 05, 2009 at 5:35 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 
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Replying to: ironhorse1 (Sep 06, 2008 5:49 pm) 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!
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Replying to: todd82ta (Sep 06, 2008 6:43 pm) 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?
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Replying to: ironhorse1 (Sep 07, 2008 4:31 am) 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.
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Replying to: todd82ta (Sep 07, 2008 5:24 am) 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 |
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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
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Replying to: skidder440 (Sep 22, 2008 9:13 am) 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. 
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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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Replying to: skidder440 (Oct 01, 2008 10:04 am) The problem you're having is without a doubt, a problem with your AFM (Air Fuel Meter). That is that grey looking thing with the grey flap in it. It's inline of your intake and it bolts onto the back of your air box. Those get old, and the gradiated sensor on the door gets worn out. I was able to buy a rebuilt one by Python on eBay for $75 bucks. They are pretty expensive. A new one is about $250 bucks. But I guarantee to you that your car will run like brand new. Another thing to take a look at would be your "reference" sensors. They are located on top of the transmission bell-housing. They normally sell for something like $200 each, BUT... BMW used these same sensors in the 7 series model back in the early 80s. You can buy these for $75, and they are identical in every way... the only difference is that the length of the wires are a little bit longer, but that's not a problem. I would check the AFM first though. You could also need a new TPS (throttle position sensor). That's much cheaper, and easier to replace... but I still think it's your AFM. I would go to RennList.com |
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Dear Todd82ta: Thank you so much for that information, You should know I am so appreciative of this info.. I don't know how to thank you, unless on the slight chance you are a hunter, I have a large tract of land in Southern New Hampshire you could hunt on. I am Skidder440 with a 1982 model 944. Celebrating my 10th anniversary with my first and only, thanks for helping me to make it even better, it could use all the help. Jon
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