Overheating Problem

buzz endersby · 10-16-2005, 11:10 AM

1991 Audi Coupe 2.3E. Have had overheating problems for a while which became critical recently. Have: new thermostat, temperature sender, new headgasket, waterpump, all sorts of belts, but still overheating. Have bypassed thermostat, rigged radiator fan to run continuously on highspeed, but still boiling over after 5 mile run and standing with engine running for 15 mins. Cannot seem to track down a radiator fan cooling switch with four pins (light brown). Are there different types/models of thermostats to use? Any ® any help or suggestions gratefully received

Buzz

A6_25TDI · 10-17-2005, 07:09 AM

If it's boiling with the fan at full speed, you may have a leak somewhere (did you check the water level?) or you may have a clogged radiator.

maniacuV6 · 03-10-2006, 02:25 AM

the problem is absolutly sure the radiator.... i have the same problem because i put 2 different types of antifreeze and they did a chemical reaction.....

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10-16-2005, 11:10 AM	#1 (permalink)
buzz endersby Newbie Join Date: Oct 2005 Posts: 7 Gallery: (0)	1991 Audi Coupe 2.3E. Have had overheating problems for a while which became critical recently. Have: new thermostat, temperature sender, new headgasket, waterpump, all sorts of belts, but still overheating. Have bypassed thermostat, rigged radiator fan to run continuously on highspeed, but still boiling over after 5 mile run and standing with engine running for 15 mins. Cannot seem to track down a radiator fan cooling switch with four pins (light brown). Are there different types/models of thermostats to use? Any ® any help or suggestions gratefully received Buzz

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10-17-2005, 07:09 AM	#2 (permalink)
A6_25TDI Full Member Join Date: Jun 2005 Posts: 144 Gallery: (0)	If it's boiling with the fan at full speed, you may have a leak somewhere (did you check the water level?) or you may have a clogged radiator.

03-10-2006, 02:25 AM	#3 (permalink)
maniacuV6 Newbie Join Date: Mar 2006 Posts: 6 Gallery: (0)	the problem is absolutly sure the radiator.... i have the same problem because i put 2 different types of antifreeze and they did a chemical reaction.....

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