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Author Message
Stuart Mackay
Silverstone


Joined: 29 Apr 2013
Posts: 138
Location: Swaffham, Norfolk and Good


PostPosted: Fri Jul 07, 2017 8:29 pm    Post subject: Reply with quote

Very happy bunny today as car has just returned from Porsche Colchester, who seem to have sorted the intermittent Temp Indicator Failure that has annoyed me for the last 12 months. I replaced the water temp sensor on the block with new a few weeks ago and this did not cure this annoying fault.
I had noticed that the engine wasn't reaching 80 C when under light load, and the failure indicator would come on at around the 70C which made me think it was a thermostat issue. Also, it seemed to all work fine when on track under heavy load, so was getting a bit confused with cause and effects.

It appears the cause wasn't directly related to the temperature sensor circuit on the engine, but it was a faulty gearbox cooling solenoid that had stuck open and was allowing the coolant to pass permanently through the gearbox rad, thus overcooling the engine under light loads. Apparently, this is an occasional fault, and without the experience of the Tech at Colchester, Kev Stevens, I would have carried on down the merry path of engine temp circuit investigations.
see Health Check vid from Colchester (ignore the tyre comments, the geo was out and new tyres are on order!)

https://video.citnow.com/vtXZbDK260f

Oh and the bill??...a very reasonable £165 including 70 mile pick up and delivery thumbsup thumbsup
_________________
2007 Speed Yellow 997 Carrera GT3 CS
2000 Westfield Cosworth
 
  
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