Very hot and bothered

[blitzracing]

The fans are on full time as we shorted the otter switches to try and get maximum air through the engine bay so we cant use that as a temperature reading.

[Sardonicus]

Loubaruch said:

Sardonicus said:

Your 1st big mistake is trusting what the fitted gauge is telling you and the fact you think the under-bonnet heat is excessive well even a properly running car will have sweltering heat this time of year under the bonnet if the cat/cats are still fitted even when at correct coolant temps get an accurate gauge of the actual engine temperature (thermal gun etc) around coolant stubbs radiator etc keeping away from shiny parts before you go into melt down over this possible issue

As the fans are running continually you can surely rule out guage errors, they are only a guide at the best of times.

Have you checked that all the coolant hoses/circuit are clear?

I found this many years ago:

http://www.bertram-hill.com/griffith-cooling-syste...

What if the fan otter switch as failed ? or the fan relay contacts have welded themselves together ? fans running continuously are not conclusive proof of over heating especially with these cars IMO

[blitzracing]

Nope- crossed wires (literally) , we shorted the otter switch on purpose trying to get the temperature down on a very hot blast around the Brecon Beacons, so its not part of the issue.

[Sardonicus]

blitzracing said:

Nope- crossed wires (literally) , we shorted the otter switch on purpose trying to get the temperature down on a very hot blast around the Brecon Beacons, so its not part of the issue.

My bad Mark skipped through this post too quickly likened to spot diagnostics something I am not known for

[Pete Mac]

blitzracing said:

Ill pop Rovergauge on there to check- but my spider senses tell me this is really hot, and the engine starts to stall badly as it reaches an indicated 100'c. Im not loosening the cap to find out it boils ! Mind you maybe I'm just used to a nice Ginetta cooling system that never goes above 85'c whatever the ambient temp.

Edited by blitzracing on Wednesday 4th July 12:36

Edited by blitzracing on Wednesday 4th July 12:36

Mark, the fact that the high temperature is impacting how the engine runs indicates there may be a problem in the cooling system and maybe we can dicount faulty gauge etc.

You are best placed to sort timing etc. Mine runs with full size number plate etc. etc. You say you have bled the system, however an airlock is a strong possibility. I spent a lot of time bleeding system using my patent funnel screwed onto expansion pot and really pumping the hoses to get any airlocks out. If you think it's worth it, as I recall I am only 2 junctions away on M4 so happy to bring funnel and a third pair of eyes.

Pete