Servo non-return valve

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worzel
BMW Enthusiast
Posts: 36
Joined: 12 Dec 2015, 10:31
Car model: 1991 525i Auto
Location: Merseyside

Re: Servo non-return valve

Post by worzel » 02 Aug 2016, 09:25

Hi


Thanks for all of your ideas- I'll have to get busy- with my thinking cap -now where did I put it).


Regards



John

Maxwell
BMW Enthusiast
Posts: 1420
Joined: 24 Aug 2014, 19:07
Car model: F13 M6
E53 3.0d
Location: Swindon

Re: Servo non-return valve

Post by Maxwell » 02 Aug 2016, 09:31

Couple of other things for you - there is an engine reference speed sensor that could be worth checking, if you have air con it could affect the engine speeds at tickover, your problem could also be gearbox related.

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