Thermostat

BIGAL1985

MEMBER
1999 AUDI A4
6 CYL
AWD
MANUAL
72,000 MILES

Hi, Just purchased a 1999 Audi a4 with 72000 miles, and while I was driving the other day, with the car being all warmed and driving for quite sometime, the temperature gauge dropped alll the way to cold, and stayed there for alittle and then went half way, which is normal. Now Im asking is this the thermostat? It only happened once or twice, DO you think if I changed the antifreeze it would help, or do I need to change the thermosat, And also if I do, how easy is it to change, for myself to do, or how much does it cost to get it replaced on average, Thanks for your help

AL

3 Replies

ADRIA GAVIN

MEMBER
1 POST
1997 AUDI A4
4 CYL
2WD
MANUAL
223,000 MILES

I am having trouble with my heating system in my tdi audi a4. The heater never seems to get very warm. Ive purchased a new thermostat but I cannot locate the position of it in the engine bay. Could you help me find where it is

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Saturday, May 23rd, 2020 AT 11:57 AM (Merged)

ITSKEVN007

MEMBER
14 POSTS
1998 AUDI A4
1.8L
4 CYL
TURBO
AWD
MANUAL
215,000 MILES

I am currently replacing a coolant flange on this Audi but I'm having trouble taking off the hose from the coolant flange to the heater core, when attempting to remove the stubborn hose, I notice a slit in it. I am wondering if anyone has any tips or procedures to servicing this hose.

Thanks, Kevin

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Saturday, May 23rd, 2020 AT 11:57 AM (Merged)

RASMATAZ

MECHANIC
75,992 POSTS

Hello,

Here is a guide to help you see what you are in for when changing the engine thermostat out.

https://www.2carpros.com/articles/replace-thermostat

Here are the diagrams of what it will be like for your car

Check out the diagrams (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers

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