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View Full Version : Temp gauge not working?



sixfiveoh
12-05-2007, 04:04 PM
So recently, my buddy pointed out that my temp gauge was showing all the way cold. I had been driving for around 20 minutes so I knew the motor wasn't cold. I just brushed it off, and later that night it was working again. He pointed out later to me that all of a sudden it wasn't working again, and on the drive home today, I noticed that it isn't working now. What's going on? All of my other gauges work fine. A sensor, maybe? I noticed that even when it was working, it was showing a little colder than I'd expect a normal reading to be. I know when I bought the car it was normal.

Euro
12-05-2007, 04:05 PM
Im having the same problems...

tdn
12-05-2007, 04:14 PM
I have the same problem, I've done some asking and searching. I'm 99% sure its my ect sensor, also known as the water (or coolant) temperature sensor. I was playing around with my ect sensor, its a very easy fix and also a common problem. definitely do it yourself and avoid any shop and save yourself $40-100 in labor.

dealerships want $40 for just the part (they used to be $13.. before they became a known common problem, then i guess they jacked up the price).. but I'm finding them online for $20 + shipping.. so I ordered mine online last night, should be here Monday of next week. if you want to wait until then, i'll replace it Monday and let you know if it works.

If your car is 99.5+ the part number is # 059 919 501A (green)
If your car is 96-99 the part number is # 078 919 501B (blue)

I can't guarantee it's what the problem is, but I'm pretty sure.

tdn
12-05-2007, 04:31 PM
http://www.audiworld.com/tech/eng47.shtml

theres a link to a DIY someone sent me.

sixfiveoh
12-05-2007, 05:55 PM
Awesome, thanks for the info. I'll PM you in a week or so to find out how it went [up]

BONFIRE074
12-05-2007, 06:38 PM
Coolent temp sensor..just did 2 in 2 diff audis having the same problem and it fixed them right up [up]

audiFUEGO
12-05-2007, 06:41 PM
You want to get the greentop...

replacing is easy... just make sure you get a replacement plastic clip with your sensor. If you dont you better try very hard not to break the old one when your clipping in the new sensor. If you break that POS your SOL until you get another one.

BONFIRE074
12-05-2007, 06:47 PM
You want to get the greentop...

replacing is easy... just make sure you get a replacement plastic clip with your sensor. If you dont you better try very hard not to break the old one when your clipping in the new sensor. If you break that POS your SOL until you get another one.

I had the exact opposite of luck..i broke the plastic one the as soon as i tired putting them in..i used hte origonal ones on both cars[confused] maybe its just me but i prefer those ones[wrench]

audiFUEGO
12-05-2007, 06:51 PM
the old one is the one that i broke... i of course didnt have a replacement.

The old one is made of plastic also.

Ado
12-05-2007, 06:52 PM
i would say also that its the Coolent temp sensor.

BONFIRE074
12-05-2007, 06:52 PM
the old one is the one that i broke... i of course didnt have a replacement.

The old one is made of plastic also.

i did them on 2.8's and they were both metal[confused]

woofster
12-05-2007, 06:59 PM
Mine was metal too and it was nowhere near breaking. (1997 1.8T)