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Date:         Thu, 21 Mar 1996 11:23:33 -0800
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Pat.Spragge@wj.com
Subject:      Re[2]: engine cooling non-problem

This is something I've wondered about as well. I, too, have an '85 that I've noticed the needle rise close to the limit without the fan going on.

I've checked the 2-position switch on the radiator and it turns the fan on when shorted. I've also looked in the Bentley at the wiring diagram, which shows that the temp indicator is wired to the switch at the engine while the fan is controlled at the radiator. In addition, the cooling system bleeding procedure suggests that the engine needs to be turning above 2000rpm for adequate circulation of the coolant.

All of this, in my mind, indicates that when the temp needle starts to rise at idle, we need to rev the engine and let it "idle" at +2000rpm.

Any comments?

Pat S.

______________________________ Reply Separator _________________________________ Subject: Re: engine cooling non-problem Author: ajax@why.net (ajax) at INTERNET Date: 3/21/96 1:04 PM

I have an 85 GL and it too rarely turns the cooling fan on. However, the gauge does rise pretty far when at a prolonged idle. What I've wondered is whether the gauge measures the temp at the engine or the radiator. I know the fan is switched at the radiator.

If it is at the engine, then it could be that the water pump is not circulating the coolant to the radiator sufficiently to cool the engine and thus the radiator never turns on but the engine is indeed running hot. Let's face it, it is a long push from the engine to the front of the van.

If it is at the radiator, then I don't think there is a problem.

Does anybody know?

Greg Gregory V. Robinson ajax@why.net tcdfw@aol.com (TwinCell: 2 Cellular Phones / 1 Number) 85 BMW 535i 157K (BMW Digest) 85 VW Vanagon 135K (Vanagon List)


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