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Discussion Starter #1
Please can anyone answer this definitively. On a 2008 1.4 vti ep3 Prince engine, if the thermostat failed and was stuck open, would this prevent the air con clutch from engaging? Thanks
 

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Should not stop air con on my view.

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Discussion Starter #4

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I believe it will as the ecu controls the aircon directly based on various inputs so if any input is not as expected it may well not allow it to function.

Bit like cruise wont work if it does not see the clutch switch and brake switch in correct positions or if there is no speed signal.
 

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Hi Windy,

I found this link which might suggest otherwise. I have the PO597 code also and have tried everything to fix my air con except changing the stat. However this bulletin relates to a different engine to mine (mine is 1.4 ep3) and i don't have the other code it mentions. Could be worth a try?

http://www.partinfo.co.uk/files/AC_Peugeot_207_No_Engine_Power.pdf
Learn something new everyday i have not seen that detailed before, god knows why they want to add even more complexity
 

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Discussion Starter #7
Exactly, everyone I've spoke to so far including garages etc say there is no connection. I just had this niggling feeling as the stat code was the only one that kept coming back.

Next question how do you drain the coolant before fitting the stat? Will keep this updated and let you know if it solves the air con issue.

Ps thanks for the insight reliable.
 

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Discussion Starter #10
nice job, great when a plan comes together.
Cheers Stripe it definitely was. Just goes to show that 4 garages looked at it and all couldn't diagnose the problem, and all said that they were almost positive the thermostat would have no bearing on the air con kicking in. Just lucky i found a bulletin online that suggested otherwise.

Could have been very expensive if i'd have started replacing various parts such as compressor etc. as they suggested. Instead i managed to get hold of a genuine stat for £40 off ebay. Now just to fix my exhaust blow and remote key fob (gonna try the soldering you suggested).
 
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