Audi coupe 20v coolant temp

justshoemark · 21-04-13, 08:03 PM

Hi all hope your all well. Just wonder if any one new why the temp gauge never goes up munch goes to about quarter way when you drive normal but when you drive abit harder it goes down. Iv put a new thermostat in and it's still the same. Do the 20v run colder then the 10v? Thanks for your help.

shaun5 · 21-04-13, 08:11 PM

Quote:

Originally Posted by justshoemark

Hi all hope your all well. Just wonder if any one new why the temp gauge never goes up munch goes to about quarter way when you drive normal but when you drive abit harder it goes down. Iv put a new thermostat in and it's still the same. Do the 20v run colder then the 10v? Thanks for your help.

If you have put a new thermostat in and its not getting up to temperature you have either got a duff thermostat, temp sensor or dashboard fault.
Was it a genuine thermostat? i personally would only fit genuine.
Does the gauge go up if you are sat in traffic? do the fans kick in?

justshoemark · 21-04-13, 08:15 PM

Yea it was a genuine one. Yea t it will go up and the fans cut in but that takes a while. I just found it weird iv never had a thermostat come fault.

shaun5 · 21-04-13, 08:21 PM

Quote:

Originally Posted by justshoemark

Yea it was a genuine one. Yea t it will go up and the fans cut in but that takes a while. I just found it weird iv never had a thermostat come fault.

They generally dont go faulty but you never know. Its more than likely a sensor or dash fault. My temp gauge sometimes goes up to operating temp and other times only partially up

Have you got anyone near you that has a working car so you can change the dashes over?

justshoemark · 21-04-13, 08:23 PM

Na I don't I may have a spare one somewhere. Do you have a 20v I just wondered have many miles you were getting to a tank. Many thanks

shaun5 · 21-04-13, 08:29 PM

Quote:

Originally Posted by justshoemark

Na I don't I may have a spare one somewhere. Do you have a 20v I just wondered have many miles you were getting to a tank. Many thanks

It was a long time ago when i had a 20v as a daily drive and i cant remember what mpg i got. Dont think you want to here how many miles my S2 20vt does to the tankfull

On a good run (300 miles) at 70 mph on the motorway i got 35-40 mpg for my 80 2.3 10V.
Around town it is probably closer to 25.
A cold running car will not do good mpg.

justshoemark · 21-04-13, 08:54 PM

Na I no that I'm getting about 320 to a tank at the mo I throught it should be better but I'm not sure. Il see wot the sensor is doing.

b3coupe · 21-04-13, 09:19 PM

I once saw 360 miles to a tank in my 20v fwd coupe. That was on a steady run on the motorway and it was agony to not drop it a few cogs and floor it! Haha

The flip side is its also used half a tank in 2 15mins sessions round mallory park a few years ago. Oops

justshoemark · 21-04-13, 09:22 PM

I see so mine being a Quattro I may be getting about the right miles to tank then. dose your temp read low or dose in read in the middle.

Audiden · 21-04-13, 09:42 PM

My 90 20v is on it's third thermostat with me... The original one was stuck open, the next one (aftermarket) didn't last a week before it was stuck open, the most recent genuine Audi stat brings the temperature up to a qtr on the gauge. It heats up to halfway in town & drops again on the highway, so sounds much like your car.

I've still got both the main & aux radiators on my car, wondered if it was something to do with that?

I'm getting 29.1 mpg in a mix of mainly faster B-road driving & some town driving.

21-04-13, 09:19 PM	#8
b3coupe Grown up member Classic Audi Club Member Join Date: Dec 2008 Posts: 281	I once saw 360 miles to a tank in my 20v fwd coupe. That was on a steady run on the motorway and it was agony to not drop it a few cogs and floor it! Haha The flip side is its also used half a tank in 2 15mins sessions round mallory park a few years ago. Oops __________________ 1990 Coupe 20v (Nogsport conversion) 1998 2.5tdi T4 transporter

21-04-13, 09:42 PM	#10
Audiden Senior Member Classic Audi Club Member Join Date: Aug 2008 Location: Scotland Posts: 1,257	My 90 20v is on it's third thermostat with me... The original one was stuck open, the next one (aftermarket) didn't last a week before it was stuck open, the most recent genuine Audi stat brings the temperature up to a qtr on the gauge. It heats up to halfway in town & drops again on the highway, so sounds much like your car. I've still got both the main & aux radiators on my car, wondered if it was something to do with that? I'm getting 29.1 mpg in a mix of mainly faster B-road driving & some town driving. __________________ Too many cars!!

21-04-13, 08:15 PM	#3
justshoemark Grown up member Classic Audi Club Member Join Date: Mar 2012 Location: cambrigde Posts: 83	Yea it was a genuine one. Yea t it will go up and the fans cut in but that takes a while. I just found it weird iv never had a thermostat come fault.

21-04-13, 08:23 PM	#5
justshoemark Grown up member Classic Audi Club Member Join Date: Mar 2012 Location: cambrigde Posts: 83	Na I don't I may have a spare one somewhere. Do you have a 20v I just wondered have many miles you were getting to a tank. Many thanks

21-04-13, 08:54 PM	#7
justshoemark Grown up member Classic Audi Club Member Join Date: Mar 2012 Location: cambrigde Posts: 83	Na I no that I'm getting about 320 to a tank at the mo I throught it should be better but I'm not sure. Il see wot the sensor is doing.

21-04-13, 09:22 PM	#9
justshoemark Grown up member Classic Audi Club Member Join Date: Mar 2012 Location: cambrigde Posts: 83	I see so mine being a Quattro I may be getting about the right miles to tank then. dose your temp read low or dose in read in the middle.