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Old 09-01-2010, 07:54 PM   #1
heretic
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Location: Gananoque, Ontario
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coolant / heating issues

1995 325i

New fan clutch, water pump, thermostat, upper and lower rad hoses, rad pressure washed.

I KNOW there is some air in circuit and I keep trying to bleed it out.

When driving temp stays at 12 o'clock (medium) then will occasionally climb and sometimes hit red, then the temp drops (I replaced the thermostat).
Other issue is that heat is very sporadic when the heat is on full.

My thoughts are:
1) partially blocked heater core
2) heater valves malfunctioning
3) air in the circuit is causing all the problems

Any advice ?

I'm thinking of draining all fluid, removing hoses to heater core and flushing that seperately, do the heater valve cleaning, refill and bleed.
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Old 09-02-2010, 03:16 PM   #2
heretic
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update #1; Heater valves click when power applied and are receiving power.

Expansion cap has "leak" so switched it with other car.

Worst case scenario could be head gasket.
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Old 09-02-2010, 06:16 PM   #3
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Quote:
Originally Posted by heretic View Post
update #1; Heater valves click when power applied and are receiving power.

Expansion cap has "leak" so switched it with other car.

Worst case scenario could be head gasket.
if the water pump new and still over heating = head gasket!!!!
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Old 09-03-2010, 12:22 AM   #4
blastedM3
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it could be a faulty thermostat. Take it out and see if it still overheats. if it still does than its ur headgasket.
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1991 318ci-Project Car-Almost Done
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Old 09-03-2010, 05:17 PM   #5
heretic
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and the winner is:: head gasket
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Old 09-03-2010, 05:53 PM   #6
Ceeker
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and the winner is:: head gasket
oh boy oh joy oh bliss..lol
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I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
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