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Join Date: Jun 2007
Location: long island, ny
Posts: 9
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overheating
ok so i was driving my 96 328is to work one morning happened to look down and noticed the car was hot. so i pulled over shut the car off, waited 30 mins to cool it to normal temp, trying to make it to work. 2 mins later it was hot again. Had it towed, so thinking about it, in the winter the car never fully warmed up so i suspected a thermostat. I ordered a genuine bmw unit, drained the radiator, replaced the thermostat, and filled the radiator with the bleeder screw open, and started the car...i get luke warm heat and it seems if i have the cap on and bleeder screw tight, it overheats. so i tried to burp it a few times and if i leave the caps off, it will overflow coolant through where the cap should be, but once i put the cap on and tighten the screw the temperature starts to climb. at that point i can open the caps again and it almost instantly cools down and is ok. i then top off the fluid and recap it and the same thing continues to happen. Any clues or suguestions?
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06-29-2007, 06:47 PM
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Join Date: Jun 2007
Location: SE Michigan
Posts: 3
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You may have a failed water pump. Has it been changed to a metel one or do you have the original plastic one?
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06-30-2007, 01:45 AM
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Location: long island, ny
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it is original but i think it is working due to the fact that with no cap it will push coolant out the top of the overflow bottle
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06-30-2007, 02:53 AM
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Location: west chester pa
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try filling it with the screw out and let ift sit over night and re check in the morning
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gONe |
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06-30-2007, 03:23 AM
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How many miles are on your car? The water pumps on the E36 are only good for about 85,000 miles, and I'd guess if you have a '96 you've gone long past that.
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07-02-2007, 08:58 AM
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Your problems are unusual. It sounds like a blockage or restriction.
Was there sludge in the coolant? I'd pull everything off, clean it and check or plastic debris or sludge.
__________________
HPDE Instructor (BMW / PCA / Apex) Here: 1997 M3/4 Byzanz/Magma ~ 2006 Yamaha R6 ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l ~ 2015 Kia Optima Gone: 2001 330i Silver/Grey ~ 98 Camry V6 ~ 97 Camry I4 ~ 97 Mazda 626 I4 ~ 93 Sentra SE-R ~ 88 Toyota Truck I4 |
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07-02-2007, 12:28 PM
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Join Date: Jun 2007
Location: long island, ny
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my thought is the water pump seeing as the lower hose is cool and upper is hot. its got 116k on it. im going to try a water pump tomorrow...
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07-02-2007, 04:02 PM
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where is the bleeder located on the M3 thermostat housing..???
Dumb question I know so sorry |
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07-04-2007, 11:40 AM
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Quote:
__________________
HPDE Instructor (BMW / PCA / Apex) Here: 1997 M3/4 Byzanz/Magma ~ 2006 Yamaha R6 ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l ~ 2015 Kia Optima Gone: 2001 330i Silver/Grey ~ 98 Camry V6 ~ 97 Camry I4 ~ 97 Mazda 626 I4 ~ 93 Sentra SE-R ~ 88 Toyota Truck I4 |
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07-05-2007, 07:41 AM
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Join Date: Jun 2007
Location: long island, ny
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so i decided to take a look at the water pump after findoing out about the plastic impeller, sure enough it was broken into about 3 pieces...installed a new BMW one and it runs great
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07-05-2007, 07:14 PM
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Join Date: Jun 2007
Location: SE Michigan
Posts: 3
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This is the reason I asked in my previous post. The E36 with a six has a lot of the quirks like the POS plastic water pump. Your failure description was text book for a water pump failure.
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07-07-2007, 01:49 PM
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Join Date: Jun 2007
Location: long island, ny
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thanks for all the help
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07-07-2007, 06:38 PM
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1997 BMW M3 3.2L I6
