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Porsche 944/968 1985 Porsche 944 electrical problem


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Last Post: Aug 2, 2012 2:43 AM Last Post By: Maya Ropelr
seawayvm

Posts: 6
Registered: 08/11/05
1985 Porsche 944 electrical problem
Posted: Aug 11, 2005 4:13 PM
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After I turn off my ignition I can still operate my windows at times. When this happens the battery goes dead from the draw. Where do I start looking?
porschetech

Posts: 133
Registered: 04/19/04
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 7:40 AM   in response to: seawayvm in response to: seawayvm
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Is your 944 a early 85 and late 85?

Something else must be running to cause the battery to go dead. If the window relay was sticking you still have to be pressing a window stick in order to be drawing current from the battery.

If you can tell me which model you have, I'll check my wire manual and get back to you. BW
magcuda

Posts: 771
Registered: 12/09/03
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 9:46 AM   in response to: seawayvm in response to: seawayvm
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on a 85 1/2 this is normal but once the door is open that system should stop that function. how long does it take to drain the battery? check that your dome lights works-including the rear one- and not causing the hood light to stay on
seawayvm

Posts: 6
Registered: 08/11/05
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 9:52 AM   in response to: porschetech in response to: porschetech
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Thanks for your reply
My car has a build date of 4/85 vin# is WPOAA0945FN454831
I am not sure if this 4cyl 5speed is early or late.
Doug
seawayvm

Posts: 6
Registered: 08/11/05
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 9:56 AM   in response to: magcuda in response to: magcuda
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Thanks for you reply
The draw is quite a bit.When I measured the draw between the neg cable and the battery it shows a full draw (12volts). It will run the battery down in no time at all. But it is intermittent sometimes it can go for days and be ok.
Spiritburner

Posts: 513
Registered: 03/01/04
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 12:23 PM   in response to: seawayvm in response to: seawayvm
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You need to measure the amperage draw (current) between the negative battery post and negative cable.... not the voltage....this test is while the vehicle is turned off...do not try to crank vehicle while ammeter is in the circuit....most small multimeters will only read up to around 10 amps DC...others only good to around 2 amps DC....If you crank with ammeter in place... the high amp draw of the starter will blow the over current fuse in the meter....please post back with your amp reading....hope this helps...kvn
seawayvm

Posts: 6
Registered: 08/11/05
Re: 1985 Porsche 944 electrical problem
Posted: Aug 12, 2005 3:55 PM   in response to: Spiritburner in response to: Spiritburner
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The draw reads 5.2 amps between the neg cable and battery
ddonovan

Posts: 2
Registered: 08/26/05
Re: 1985 Porsche 944 electrical problem
Posted: Aug 26, 2005 3:25 PM   in response to: seawayvm in response to: seawayvm
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Did this ever get resolved? I have an early '85 as well with the same sort of issues. My battery light comes on when I am driving as well.
seawayvm

Posts: 6
Registered: 08/11/05
Re: 1985 Porsche 944 electrical problem
Posted: Aug 29, 2005 11:34 AM   in response to: ddonovan in response to: ddonovan
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Not really, But I am pretty sure the problem is with my power windows.
ddonovan

Posts: 2
Registered: 08/26/05
Re: 1985 Porsche 944 electrical problem
Posted: Sep 2, 2005 5:23 PM   in response to: seawayvm in response to: seawayvm
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Thanks seawayvw. I think my problem is coming from the running lights. I had all the bulbs replaced on my car and the mechanic said that one of my running lights had cause a fuse to blow and ever since that I have been having this problem.
seawayvm

Posts: 6
Registered: 08/11/05
Re: 1985 Porsche 944 electrical problem
Posted: Sep 4, 2005 12:25 PM   in response to: ddonovan in response to: ddonovan
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My power windows still operate after I shut the car off. I have found out that the drivers door switch does not operate. If I open and close the pass door then the windows don't work without the key being on. That was why my battery was going dead!! I don't know whats wrong with the switch on the drivers door, I hooked the two wires together and the interior light did not come on, but when I grounded one of the wires then the interior lights came on. I have a snafu with the wiring someplace. Does anybody have any ideas where to look?
classic cars

Posts: 1
Registered: 07/10/11
Re: 1985 Porsche 944 electrical problem
Posted: Jul 10, 2011 11:39 AM   in response to: seawayvm in response to: seawayvm
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I have an 1985 porche, i have no operation of the power windows and the wipers is there a window relay, fuess are good checked for voltage at the switch no voltage the power windows did work then one day it just stopped
Maya Ropelr

Posts: 5
Registered: 08/02/12
Re: 1985 Porsche 944 electrical problem
Posted: Aug 2, 2012 2:41 AM   in response to: seawayvm in response to: seawayvm
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This is my first post here as noob and hope you'll gonna accept my apology for bumping this up. Actually i became a member because of my dad's issue and he's concern about He's an owner of Porsche 944 almost near to the year of your model and with 132,000 Miles
It has a bad oi leak at the oil pan gasket and the rear main seal however there took place an alectric issue which had lead to electric problems. The question now is how would be the car bring back its original performance with lower electric power. Meanwhile we've been looking for Discounted parts for us to save money and definitely to keep this vehicle in good shape as it has sentiments to us.

Edited by: Maya Ropelr on Aug 2, 2012 2:42 AM

Edited by: Maya Ropelr on Aug 2, 2012 2:42 AM

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