Water Temp Guage

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2.7 V6 30v biturbo - 261bhp
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ivorl
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Water Temp Guage

Post by ivorl » Sun Aug 21, 2005 3:36 pm

The water temp on my S4 Avant goes up normally when I start driving. Is it normal for it to go right back down again even during a long motorway journey or hard driving? Oil temp goes up as normal.

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Mik
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RE: Water Temp Guage

Post by Mik » Sun Aug 21, 2005 4:12 pm

Some S4's develop problems with the water temp sensor over time resulting in an erratic temp gauge. Theres in an improved sensor part available (I have had it changed)

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ivorl
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Post by ivorl » Mon Aug 22, 2005 10:15 am

Can any garage fit the part for you?

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Mik
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Sensor

Post by Mik » Mon Aug 22, 2005 10:59 am

Yes it is very straight forward. I believe the new sensor is green and the old one is black. If you are not going to Audi or a specialist, probably best to get the part from Vagparts and then have them fit it.

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ivorl wrote:Can any garage fit the part for you?
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Dippy
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RE: Sensor

Post by Dippy » Mon Aug 22, 2005 12:32 pm

It's the G62 sensor. Costs around £20 I think. Easy to change - DIY job if you're so inclined.
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UKS4APR1
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Post by UKS4APR1 » Mon Aug 22, 2005 10:37 pm

Failure of G62 Sensor is very common, it's a 4-pin sensor. 1 pair is for the Temp. Gauge on the dash, other pair is engine Temp for ECU. When this pair fails the car won't start (from hot) as the ECU thinks the engine is cold and pumps in extra fuel. When it does eventually start there's loads of black smoke for a while.

My old (original) sensor was BLUE part No. 078 919 501 B
New sensor is dark green part No. 059 919 501

It's an easy job to change.

ivorl
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Post by ivorl » Tue Aug 23, 2005 10:42 am

thanks for the info.

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