Overheating 325i
Moderator: martauto
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IB6376CY
- E30 Zone Newbie
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- Location: Mallorca
Suddenly it overheated! Removed thermo, cleaned radiator, flushed bothways but situation persists. No sign of water in oil, no obvious leaks. Suggestions please.
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Grrrmachine
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'89 325i Touring | Touring Resto Thread | In-Dash Screen install
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HairyScreech
- Engaged to the E30 Zone
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Overheating when stationary or moving?
If stationary then the first port of call it the fan coupling. Some seem to last forever and some just die.
If stationary then the first port of call it the fan coupling. Some seem to last forever and some just die.
2.8 development thread http://www.e30zone.net/modules.php?name ... c&t=170822
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
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Speedtouch
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One suggestion is your location - scorchio! 
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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IB6376CY
- E30 Zone Newbie
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Thanks for the replies. As there is no hot air from the interior heating, I could assume an air lock. However,bleeding from the vent in the thermo housing, squeezing the hoses to expel any air, it still heats up. How do I test for a faulty water pump, maybe that is the prob.? All and any usefull input gladly received.
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Grrrmachine
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The test for a faulty water pump, and all the other faulty components, is in the link I posted.
'89 325i Touring | Touring Resto Thread | In-Dash Screen install
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Brianmoooore
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Have you tested the thermostat you removed? It's likely (hopefully) that the reasons for your two overheating sessions are different. The reason for the first time remains to be determined, but the chances are that when you refilled the coolant, you caused an airlock. This can quickly cause the head to crack!
Fill the coolant bottle, and pull off the top heater hose at the bulkhead. Allow coolant to flow from the pipe and stub, then push the pipe back on and tighten the clip.
Fill the coolant bottle, and pull off the top heater hose at the bulkhead. Allow coolant to flow from the pipe and stub, then push the pipe back on and tighten the clip.
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IB6376CY
- E30 Zone Newbie
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Problem solved by installing a new radiator, and whilst in there, fit new timing belt (old one showing signs of wear), new water pump to replace the leaking one, new thermostat, hoses and pressure cap.
So there must have been a blockage in the original as the "professional" cleaning was not done thourghly.
Runs fine now...justing waiting on new ICV.
So there must have been a blockage in the original as the "professional" cleaning was not done thourghly.
Runs fine now...justing waiting on new ICV.