Hi, Mark.
Sounds like it might be the gauge. If you can get the sender out of the
head, try dipping it in a jug of water of a known temp and see what the
gauge has to say.
Also, try feeling for cold spots on the rad core-could be silted up.
Cheers,
Dave H.
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----- Original Message -----
From: Mark Purtell <purtell@students.uiuc.edu>
To: <british-cars@autox.team.net>; <mgs@autox.team.net>;
<shop-talk@autox.team.net>
Sent: Friday, July 28, 2000 2:24 PM
Subject: Car gets hot
> Thanks for the help already, but I'm still a bit puzzled by the MGB's
> cooling system. I flushed the system, and refilled the block and radiator
> with coolant. Then I drove the car (to open up the thermostat) and added
> more coolant (I did this twice). Now when I drive the car, the
> temperature needle moves up to the middle of the gauge temperature at a
> "normal" rate, and then once it reaches about halfway, it stays there for
> a minute or two and then it shoots up to the overheat area-it doesn't
> always reach "overheat", but it gets close and will occasionaly peg the
> end of the gauge. Once the needle says "overheat", as I drive faster, the
> temperature gauge moves down from overheat, but never remains in the
> middle of the gauge. The engine doesn't seem really hot, and my Hayden
> fan is running fine. I have already replaced the temp sensor and have 180
> degree thermostat in it.
>
> Thanks in advance-
> Mark
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