M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: Rafiki on March 08, 2010, 11:51:52 AM
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iv searched and searched, and read everything i found. and i need your help!
i just did the "mess under the intake" clean up. New thermostat, new coolant.
Now, my heat doesn't work, and the car over heats within 8 minutes of idling.
the two rad hoses are stone cold even when the car is past 1/2 mark, and even creeping up on red, the hoses are still cold.
My guess is the water pump. But It was working a couple weeks ago before i did the underside of the intake stuff, and i also replaced my valve cover gasket.
no coolant is leaking anywhere. i also bleed the coolant system completely. new coolant again. and nothing
anyone have any ideas?
im hoping my head isnt cracked, because i have read that to happen.. but it doesnt make any sense because i havnt driven the car at ALL since i did the intake stuff, and the thermostat.
fan clutch? i have no idea :(
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It is very easy to check the waterpump. Take off the tap of the radiator and right under it on the left [twards the radiator] you have a small comunication channel. When you rev, coolant sould be coming form there entering the coolant tank. The higher you rev it, the stronger the coolant is coming.
I would suspect air in the system or thermostat not working.
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IIRC, coolant will flow if you rev the engine past 4500 rpm, even if the tstat is stone cold.
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how do you correctly get the air bubbles out of the system. i have read many different opinions on here and else where