Re: Overheating

Posted by Terry Cantelo On 2012/6/1 1:32:12

Hi Tim,
When I first got my 34 late in 2008 I suffered this annoyance for about 9 months. I did all the fixes as suggested by the guys on this site to no avail. About a dozen rad flushes, oil cooler repair, water pump check etc. To be fair the car did improve slightly but not enough to be safe. The conclusion was the most silly and unlikely fix you could imagine. When out on a run in the summer my passenger complained that her feet were boiling and could I turn the heater off which I told her was off. The next day I decided to look at the valve on the side of the engine by the vacuum control and Bijur unit, which was always in the fully open position. On taking it off it was a bit cruddy but not enough to stop water flow. When I replaced it I decided to shut it off completely and since then I have had no more trouble with overheating and the car remains cool even in temperatures of 70 to 80 plus unless you stand in traffic for a while. Even then it still does not run excessivly hot. Perhaps the valve was designed to be turned off during the summer and on in the winter.

I hope this helps
regards
Terry