M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: johnwoo on November 29, 2008, 01:52:07 AM
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ok here is the problem with my car, need some help. my temp on the gauge is running past the middle mark and towards the 3/4 mark. i've changed:
radiator
thermostat
water pump
clutch fan
flushed the coolant
bled the system
my heater is hot when i turn it on so i think my heater valve is cool. here is the weird thing. the right side of the radiator is cold. the hose coming off the thermostat housing to the radiator is cold. is my thermostat not opening up?
do i have a faulty coolant sensor that isn't opening my thermostat?
if thats the case where is the sensor or the sending unit. im finally getting all the stuff sorted out on the car and can only drive it around the block lol.
help would be appreciated.
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is it properly bled of air?
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yeh i think so.
would the right side of the radiator still be cold if its not bled right?
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if the right side of the radiator is still cold when the temp is that high, your thermostat has not opened. Did you fit it the correct way? Not bleeding it correctly will just result in overheating, will not change hose feel. Ok, do this open the radiator cap, and ensure the coolant level is at COLD level. Then open bleed screw and listen if any air hisses out, also the coolant level will drop. Then top up level to COLD again, screw in the bleed screw a little not all the way. Then run the engine and rev and hold at 3,000rpm. Also before turning on the engine turn the heater controls to fully hot and fan speed to setting 1. Add coolant to the reservoir as the engine needs it. Then if the thermostat is opening correctly, the upper hose should be hot. Take a look inside the reservoir and see if coolant is returning from the top section of the reservoir down to the bottom.
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i fit the thermostat the same way as the old one that was in there.
hmm will give what you suggested a try maybe im just stupid