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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!usc!rpi!uwm.edu!news.mr.med.ge.com!jungle!hinz
- From: hinz@picard.med.ge.com (David Hinz Mfg 4-6987)
- Subject: Re: overheating
- Message-ID: <1992Sep2.093246.12432@mr.med.ge.com>
- Sender: news@mr.med.ge.com
- Nntp-Posting-Host: jungle
- Organization: GE Medical Systems, Magnetic Resonance
- X-Newsreader: Tin 1.1 PL5
- References: <715391625.856.0@hector.mercury.acs.cmu.edu>
- Date: Wed, 2 Sep 92 09:32:46 GMT
- Lines: 23
-
- Ken Zuroski (kz08+@andrew.cmu.edu) wrote:
- :
- : 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.
-
- Sounds like you have a bubble in your heater core. Since the coolant was
- gone recently, and just refilled, I would guess you need to bleed it out
- of the core. There should be a tap on it, open it up while idling, leave
- it open until water (coolant) comes out, then close the tap.
-
- Of course, if you can't SEE the heater core, this may be more difficult than
- it could be. I don't know how the F-150 is, never having owned one.
-
- --
-
- Dave Hinz - Opinions expressed are mine, not my employer's. Obviously.
- SAAB - Because you get what you pay for.
- hinzd@picard.med.ge.com
-