co4sa
Member
Registered: 28th Jan 09
Location: bedfordshire Drives: astra gsi
User status: Offline
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hi
basically run out of ideas now and need some advise. my astra gsi turbo is currenty in limp mode, doesnt boost or rev high and some times cuts the throttle completely till you turn it on and off again. and constantly brings up the code PO340 (cam sensor). so i took it to garage they fit new plugs, afm and cam sensor. still had same problem. me and a freind have since tried two different cam sensors, removed the loom checked everything, found one of the wires going into the cam sensor plug had came out, repaired this and still had same issues. then someone suggested a crank sensor ,yet again no joy. went and got a new ecu as i was told this was the problem but made no difference.
thanks
co4sa
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DERV-POWER
Member
Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline
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have you checked the cam timing and tension
sounds like belt slipped or loose
[Edited on 25-06-2011 by DERV-POWER]
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co4sa
Member
Registered: 28th Jan 09
Location: bedfordshire Drives: astra gsi
User status: Offline
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when it was in the garage they checked timing and said it was ok. how do you check the tension?
thanks for advise.
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sri boy
Member
Registered: 31st Aug 09
Location: glasgow springboig
User status: Offline
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is vac pipe on top of throttle body ok the one way valve check all the pins on ecu are fine and theres a vacume box at back of engine check and see if there all conected
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co4sa
Member
Registered: 28th Jan 09
Location: bedfordshire Drives: astra gsi
User status: Offline
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Pins looked ok last time i looked will try what you suggested. thanks
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co4sa
Member
Registered: 28th Jan 09
Location: bedfordshire Drives: astra gsi
User status: Offline
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Checked breather and pipe seemed fine, changed map sensor today and limp mode turned off and it was boosting. Think i need vxr plugs tho. Mine are crap. Thanks again
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