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Hi again. I found something else today. While the throttle arm extends when the car is started, it does not retract when the car is switched off, and at the next restart the TCS light comes on, visit the dealer, code E7590 again (Safety system activated). Where is the vacuum dumped when the engine is switched off? It can't be the upper pipe since there is the one way valve there. So it must be the lower pipe, under the throttle body.

Any help would be welcome.

Thanks again

Harry
1991 CS Carlsson auto
 
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