Z22YH Fails to start unless crank sensor unplugged!

marks152

Member
I saw a issue like this once on a Corsa C where it wouldnt start with cranksensor plugged in and it turned out that while doing a engine swap the cranksensor plug and knock sensor plug were exactly the same and had been swapped. This was stopping injectors firing and ignition. Once the connectors were put on the right sensors it fired up perfect and all codes cleared. Strangely none of the codes refered to knock or cranksensor when they were plugged in. Im not sure if its possible on this engine but worth checking.
 
appreciate your help mate but on the z22yh the plugs are entierly different! im going to investigate wiring of sensor first if anyone can tell me what i should be seeing sensor end that would be great if not.. theres a signum 2.2 direct elite with leather satnav etc for breaking or whole car £800 cant justify spending anymore on it..
 
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1 parts found: Page 1 of 1
12567712 CRANKSHAFT REVOLUTIONS SENSOR
Vauxhall ASTRA-G, SIGNUM, VECTRA-B, VECTRA-C, VX220, ZAFIRA-A, ZAFIRA-B
Available From: Skurrays Ltd, Oxford, Oxfordshire £9.06 (inc. VAT)
RRP £125.46awww.carpartsconnexion.com_images_b_info.gif
1 parts found: Page 1 of 1

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I've tried 3 sensors now, so I'm fairly sure it can't be the sensor. Next is timing chain.. When funds allow as buying another car for the misses to get around in was more important... When the car is first started it sounds like the chain is rattling as though the tensioner isn't working though when warmed up it goes. Engine is hesitant and tends to stall when under load. So I can only assume it's this.. As also in limp mode... If anyone out there with a z22yh would like to unplug there crank sensor and tell me how it responds. Be very much helpful!
 
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