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  #1  
Old 10-24-2003, 11:43 AM
Artley Artley is offline
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Coolant pressure

Is the coolant system on a 635CSi under pressure? ....Because seems to be is. Am I looking at a blown head gasket? Or is this normal? - there are no other signs of trouble. the oil's clear, the coolant is clear, the car runs fine. However, the temp needle flickers a bit every now and then. Can you get bubbles in the matrix?

Any suggestions?

Cheers

Art
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Old 10-24-2003, 01:48 PM
KC Ron Carter KC Ron Carter is offline
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no pressure

no pressure but the system can lock in air so there is a bleeder port on the thermostat housing.

I would suspect the sender to gage connection is getting resistance build up.

Here is a picture of the connection, see figure 3.

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Old 10-27-2003, 04:38 AM
Artley Artley is offline
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Thanks for your help...

Do I take it from your post that the mechanism that opens the bleeder is governed by a temperature sensor rather than a pressure sensor?

Because if my car isn't overheating how does the bleeder know when to open?

Also any clues on how air gets trapped in the first place?

Cheers

Art
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