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[OllieOmega]

My 2.2 estate has been mis-firing and gradually getting worse.  I've eliminated most things, and am now looking at changing the cam sensor.  Trouble is that it costs £77 from autovax and I don't want to spend that much and find out thats not the problem! 
Is there anyone near the cardiff or bridgend area that has a spare one they are willing to let me try? I'm happy to then buy a new one if it turns out my one is faulty.
Cheers,
Steve

[tunnie]

Can you run through what you have done? Checked plugs for oil/water?

Best investment is in a code reader, get the codes that will help massively 

Lastly only buy cam sensor (once proven that is the fault) from Vauxhall, autovax often say its genuine but a lot of the times it's not. 

[RobG]

My 2.2 estate has been mis-firing

Cam sensor wouldn`t cause that.

[OllieOmega]

Sounds and feels like a mis-fire but could be wrong. Car starts but stutters on tickover and when driving, hard pulling off from junctions! Three garages say three different things - plugs (changed them,  no difference), air leak in vacuum system of carb - no leaks found, coil pack - tested and has consistant resistance across all four.
Code reading gives p1781 and p1700 - both seem to be transmission related but forum threads say broken cam sensor can throw these up.
I disconnected the cam sensor and the engine ran exactlythe same, if the cam sensor wasn't at fault I would have thought the engine wouldn't have run?
Had this problem for ages, even checked the inlet manifold gasket that supposedly was known for  having a split and letting air in. Very frustrating, lots of different views o  the forums as to whatit could be!

[martin42]

Thats your problem,your running a carb on it,check for split diaghram,sticking fuel float,or junk it and fit the efi system

[tunnie]

Sounds and feels like a mis-fire but could be wrong. Car starts but stutters on tickover and when driving, hard pulling off from junctions! Three garages say three different things - plugs (changed them,  no difference), air leak in vacuum system of carb - no leaks found, coil pack - tested and has consistant resistance across all four.
Code reading gives p1781 and p1700 - both seem to be transmission related but forum threads say broken cam sensor can throw these up.
I disconnected the cam sensor and the engine ran exactlythe same, if the cam sensor wasn't at fault I would have thought the engine wouldn't have run?
Had this problem for ages, even checked the inlet manifold gasket that supposedly was known for  having a split and letting air in. Very frustrating, lots of different views o  the forums as to whatit could be!

As in carburetor? 

[martin42]

Bet they forgot to check the points gap,condensor and also the dwell angle 

[OllieOmega]

It's fuel injected, air leak to check for was said to be in the intake system - vacuum pipes, airbox pipes etc.

[Webby the Bear]

Check the venturi's not blocked 

[Andy H]

Not sure why you you have had so many smart Aleck responses

Cam sensor on the 2.2 is quite capable of bringing up random codes in both engine ECU and gearbox ECU.

As Tunnie points out though you would do better if you could read the codes yourself.

[Webby the Bear]

Not sure why you you have had so many smart Aleck responses

Cam sensor on the 2.2 is quite capable of bringing up random codes in both engine ECU and gearbox ECU.

As Tunnie points out though you would do better if you could read the codes yourself.

Apologies, got a bit carried away with the joke when there's actually help needed. Sorry to OP

[martin42]

If says he has a carb fitted................

[OllieOmega]

Thanks for that Andy, I did wonder about the replies I was getting lol! I read the codes myself with an OBD blue tooth reader connected to torque on my phone.  Did another scan and it's showing a miss fire on one of the cylinders as well.

[Andy H]

Thanks for that Andy, I did wonder about the replies I was getting lol! I read the codes myself with an OBD blue tooth reader connected to torque on my phone.  Did another scan and it's showing a miss fire on one of the cylinders as well.

OK, tell us more......
what codes did you get?

[OllieOmega]

Got p1700 and p1781