Rigby
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Registered: 3rd Mar 16
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i have a problem with my c20xe what it is if i leave it a day it will start first time but as soon as i try it again after i turned it off it doesnt even offer to start? also when it does start it has a terrible misfire? any help will be appreciated cheers
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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Cam or Crank position sensor at a guess.
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Rigby
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Registered: 3rd Mar 16
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its got a new crank sensor and whats the cam sensor?
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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Tells the ECU what position the pistons are in and the camshaft speed.
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Rigby
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Registered: 3rd Mar 16
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where abouts in the engine its a dizzy?
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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It's a small black plastic box sticking up out of the metal dizzy housing.
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Rigby
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Registered: 3rd Mar 16
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You got a picture of what they look like mate
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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I think it's the attached to the black plug to the front of the dizzy.
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Rigby
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Registered: 3rd Mar 16
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How would you change that? And do you reckon that why my car is doing what it's doing? How much does it cost aswell mate?
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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At a guess you'd have to unbolt the assembly and it'll be inside the dizzy housing. It could be contributing to your car not starting but it could be other things also. It's a starting point though if you say you've done your crank sensor.
I'd hazard a guess that they are around the £30 mark..
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Rigby
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Registered: 3rd Mar 16
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How would you change that? And do you reckon that why my car is doing what it's doing? How much does it cost aswell mate?
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Rigby
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Registered: 3rd Mar 16
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Could it be any other reason why this happening? Or do you reckon it will be just them two
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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Hot start issues are normally crank or cam sensor issues I've found. I'd be looking at ruling those out first, just don't come beating my door down if it doesn't fix it
I read something about hot under bonnet temps can potentially evaporate fuel from fuel lines near inlets but I think it's far fetched.
I'd check your timing too whilst your swapping sensors.
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Rigby
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Registered: 3rd Mar 16
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Haha I won't mate, what are hot start issues, I never let it get hot
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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Starting your car at or near to its full operating temperature.
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Rigby
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Registered: 3rd Mar 16
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It will always be cold when I start it
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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see where you say it doesn't offer to start, do you mean it won't crank over or it spins just won't fire up?
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Rigby
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Registered: 3rd Mar 16
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its just doesnt offer just tuns and tuns never offers to start
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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Is there a spark?
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Rigby
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Registered: 3rd Mar 16
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yer theres a spark,fuel,compression, and timing is right
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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fuel pressure issue?
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Rigby
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Registered: 3rd Mar 16
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yes loads at the rail
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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An engine needs fuel, spark and compression to run, you've got all of these so somewhere there's an issue with one of them. Is the spark strong enough. Could be a faulty ignition? After that, I'm at a loss.
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Rigby
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Registered: 3rd Mar 16
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changed the the dizzy and rotary arm all ready mate and the spark is pretty decent
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