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        General >> Problems >> Temperature gauge at maximum
        
(Message started by: Matt63 on Nov 1^st, 2011, 3:34am)

Title: Temperature gauge at maximum
Post by Matt63 on Nov 1^st, 2011, 3:34am

Good morning guys, just drove a short distance yesterday in my 97 Ultima Cosworth and noticed the temperature gauge right at the top of the scale in the red, so immediately stopped the car. Got out, opened the bonnet and nothing seemed hot and the water level in the expansion tank looked normal. Puzzled, I waited a few minutes and turned the ignition to the first click. Immediately the temperature gauge went to maximum again. However, the car started normally and appeared to run normally. Decided it was most likely a faulty reading and didn't have far to go so switched air con to maximum heat and limped home the mile or so to get home and left the car to cool. Came back a few hours later, temperature gauge still showed maximum without even starting the engine. Any ideas as to what the problem might be?

Thanks in advance!

Title: Re: Temperature gauge at maximum
Post by Simmo on Nov 1^st, 2011, 6:42am

Sender unit u/s I guess. Have a read of This page (http://www.fordscorpio.co.uk/coolanttempgauge.htm) which may help. :)

Title: Re: Temperature gauge at maximum
Post by Matt on Nov 1^st, 2011, 9:20am

Have you changed the coolant or done any work on the top of the engine?

The guage sender is in the Y shaped bit at the front inbetween the heads its the one with the single wire connection

Title: Re: Temperature gauge at maximum
Post by Matt63 on Nov 1^st, 2011, 9:58pm

Thank you very much, will investigate both options. The vehicle had a new radiator fitted in the summer but it has done several hundred miles since then so that should have been Ok?

Title: Re: Temperature gauge at maximum
Post by Matt on Nov 1^st, 2011, 10:30pm

Yea should be, give your fans a quick spin by hand, just to make sure they havent seized

Title: Re: Temperature gauge at maximum
Post by Jonnycab on Nov 2^nd, 2011, 12:36am

I agree with Simmo, sounds like the gauge sender is kaput ;)

Title: Re: Temperature gauge at maximum
Post by gozz on Nov 2^nd, 2011, 8:58am

Matt63.
Pull the wire off the sender,if the gauge goes down the sender is shot,if it doesn't you have a shorted wire.
GOZZ.

Title: Re: Temperature gauge at maximum
Post by Matt63 on Nov 3^rd, 2011, 7:48pm

That's great thanks, will have a go at the weekend! Matt