Temp guage dives to cold ?

Technical questions and answers about the Mazda Bongo

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mayk19
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Temp guage dives to cold ?

Post by mayk19 » Thu Apr 10, 2008 8:44 am

Noticed recently that when I hit about 2000 revs, accellerating away from lights etc, the temp needle plants itself into cold... is this normal ?
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Re: Temp guage dives to cold ?

Post by Grahame at work » Thu Apr 10, 2008 9:00 am

Sorry Mayk19 this is NOT normal. :cry:

I suggest offering some more details - like what is the gauge indicating normally, how long does it stay down.

I'm sure some ideas will be along soon.

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mayk19
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Re: Temp guage dives to cold ?

Post by mayk19 » Thu Apr 10, 2008 9:08 am

Normal temp sits just below half way... no issues at all. Coolant level is good.
It will stay at cold just whilst your accellerating, when you hit a steady speed the guage goes back to normal really quickly.
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airsine

Re: Temp guage dives to cold ?

Post by airsine » Thu Apr 10, 2008 9:24 am

The temperature gauge is below the drivers seat and if I remember correctly its the only wire obviously going into the top of the engine - so it's easy to spot. The first thing I'd do is see if the connection between the gauge and the instrument wire is a little loose.
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helen&tony
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Re: Temp guage dives to cold ?

Post by helen&tony » Thu Apr 10, 2008 11:04 am

Hi
Most cars have a voltage stailiser (usually on the back of the dash)....sounds like problems I had with a car some years ago, when the cooling seemed to be all over the place according to the gauge....checked and replaced lots of bits, and found this stabiliser thingy was at fault....5 mins work.
If your car is reading normal most of the time, it sounds more like electrical problems....feel the hoses after a run, and put your mind at rest
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Helen
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Re: Temp guage dives to cold ?

Post by Aethelric » Thu Apr 10, 2008 11:26 am

helen&tony wrote:Hi
Most cars have a voltage stailiser (usually on the back of the dash)....sounds like problems I had with a car some years ago, when the cooling seemed to be all over the place according to the gauge....checked and replaced lots of bits, and found this stabiliser thingy was at fault....5 mins work.
If your car is reading normal most of the time, it sounds more like electrical problems....feel the hoses after a run, and put your mind at rest
Cheers
Helen
Its funny how 5 minute work is always after hours, or days of investigation :wink:

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helen&tony
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Re: Temp guage dives to cold ?

Post by helen&tony » Thu Apr 10, 2008 11:44 am

Hi
Too true, Dave...my father was convinced that it was the head gasket at fault....new gasket, new radiator, checked the thermostat, just about to "do" the water pump, when.....Hocus Pocus, it was the voltage stabiliser....five minutes work PLUS....radiator and head fitting....the whole episode....er....how many hours and FIVE B****Y MINUTES
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Helen
In the beginning there was nothing , then God said "Let there be Light".....There was still nothing , but ,by crikey, you could see it better.
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