Denimblue
17-04-2013, 09:52 PM
Hi,
I've got a 2001 Audi 1.9 tdi with 146,000 on the clock.
Recently while driving up a relatively steep hill, the temperature needle shot up into the red, quickly followed by a red 'coolant' warning on the dash. Before I could stop, the needle returned to it's normal temperature setting and the warning went out.
I stopped and checked the car for any obvious leaks but found nothing and continued the journey without any further problem.
Since then, I've noticed the coolant in the expansion tank dropping to below the minimum setting.
When the car is started and run from cold, the heater fan comes on right away at a high setting and blows cold air, and the temperature needle reaches it's normal setting a lot quicker than normal. The heater doesn't start to blow hot air until the needle is at the normal setting, and on occasion, especially when idling starts to blow cold air even at the hottest heater control setting.
I took it to a garage and the water pump and thermostat were replaced, but unfortunately the problem still persists.
After driving for a while, I've checked under the bonnet and noticed steam and coolant venting from the bottom of the expansion tank when the coolant level is normal.
Any suggestions would be gratefully received.
Thank you.
I've got a 2001 Audi 1.9 tdi with 146,000 on the clock.
Recently while driving up a relatively steep hill, the temperature needle shot up into the red, quickly followed by a red 'coolant' warning on the dash. Before I could stop, the needle returned to it's normal temperature setting and the warning went out.
I stopped and checked the car for any obvious leaks but found nothing and continued the journey without any further problem.
Since then, I've noticed the coolant in the expansion tank dropping to below the minimum setting.
When the car is started and run from cold, the heater fan comes on right away at a high setting and blows cold air, and the temperature needle reaches it's normal setting a lot quicker than normal. The heater doesn't start to blow hot air until the needle is at the normal setting, and on occasion, especially when idling starts to blow cold air even at the hottest heater control setting.
I took it to a garage and the water pump and thermostat were replaced, but unfortunately the problem still persists.
After driving for a while, I've checked under the bonnet and noticed steam and coolant venting from the bottom of the expansion tank when the coolant level is normal.
Any suggestions would be gratefully received.
Thank you.