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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!cs.utexas.edu!torn!watserv2.uwaterloo.ca!watserv1!warp!dbowman
- From: dbowman@warp (Don A. Bowman)
- Subject: Re: overheating
- Message-ID: <Btz0u1.I74@watserv1.uwaterloo.ca>
- Sender: news@watserv1.uwaterloo.ca
- Organization: University of Waterloo
- References: <715391625.856.0@hector.mercury.acs.cmu.edu>
- Date: Wed, 2 Sep 1992 21:54:00 GMT
- Lines: 23
-
- Ken Zuroski <kz08+@andrew.cmu.edu> writes:
- : I have a Ford '86 F150 pickup. My wife was driving it today, and she did
- : not notice that the temperature gauge was creeping up. As she pulled into
- : ...
- :
- : I suspect a leak in the cooling system, and figure that the coolant simply
- : ran dry. There is one other sympton that is confusing me, however. Now even
- : with a full radiator, whenever the truck is idling and I turn on the heater,
- : the air coming out of the heater remains cool until I rev the engine a bit--
- : then it heats up momentarily and then gets cool again. This is not the same
- : response that I remember before the engine boiled over. Then, the heater seemed
- : to heat up quickly even at idle and gave good constant heat output.
-
- On my Renault 5, the cooling system is a sealed thermo-syphon. This means that a
- bubble in it will prevent coolant from flowing properly. There are two bleed screws,
- any you basically open them, lift the overflow bottle, and wait for the coolant to run
- clear with no air bubbles. I get the same heater symptom if there is a bubble.
-
- Hope this helps.
-
- Don.
- --
- Don Bowman (519) 744-6154 dbowman@zeus.uwaterloo.ca
-