AO Silver Member
Join Date: Mar 2003
Location: United Kingdom
Alfa 75 2.0 TS cooling problem after new radiator fitted!
I recently fitted a brand new radiator to my 75 (the old one was leaking). Even with a faulty radiator, the car always cooled properly. Ie, if sat in traffic, the temp gauge would go up to 90 degrees, the fan would cut in for a minute and the temp would drop to 80 degrees again. It would sit and do that all day and has operated this way for the 16 years I've owned the car until fitting a new radiator!
Since fitting a new radiator, I noticed that the fan comes on for much shorter bursts/intervals when it reaches temperature. I got stuck in traffic last weekend and the gauge just kept on creeping up even though the fan operated in short bursts. Basically, it doesn't appear to be doing the job properly. Luckily, I was able to get out of the traffic jam and the cool air soon brought the temperature back down to 80 degrees.
I'm not sure what could be causing this. There are no air locks/problems in the system. I wonder if the fan switch doesn't like the new radiator and whether this could be the issue. The thermostat seems to be doing its job properly otherwise it wouldn't get up to temperature.
If the fan switch is a problem, is there a particular make I should look at buying or do I go with one off Ebay?
In true Alfa style, you fix one thing and something else immediately goes wrong!
Thanks in advance for any suggestions!
Rockin' all over the road in Alfas since 1998 including: 164 TS, 164 QV 24v, 166 3.0 Super, 159 JTDM, 75 TS Veloce, 156 1.8 TS Veloce and the Giulietta Cloverleaf.