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Thread: Vectra C loss of power & misfire

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    Vehicle : Vectra c1.8

    Trim : Sri

    Engine : 1.8

    Year : 07

    Default Vectra C loss of power & misfire

    Somebody please tell me what's going on with vectra c 2007 1.8 petrol! Couple of days ago it started to lose power and misfiring. Got it started again. It drove about 2 mins down the road before it just wouldn't go anymore. Rough idle, misfiring when revving. The spark plugs were replaced about 2 months ago. I change the coil pack yesterday, no luck. Plugged it in and it was showing as P0100/maf sensor. I went and bought a new one today, fitted it, still the same issue. Checked all the pipes, no breaks/splits. Going to buy new spark plugs tomorrow. Would a faulty coil pack fry the spark plugs? Could it still be coil pack if computer is detecting an issue with the maf? Honestly I'm at a loss and can't afford to keep throwing money at it but I need my car working like yesterday!

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    Regular Member bibu16v's Avatar
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    Vehicle : Vectra C

    Trim : SW Elegance II Sapphire Black

    Engine : Z18XER

    Year : 2008

    Mileage : 160k km>>

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    I'd rather go checking fuel filter, fuel pressure and depending on results fuel pump.

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    Vehicle : Vectra c1.8

    Trim : Sri

    Engine : 1.8

    Year : 07

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    Fuel pump was just changed two weeks ago. Fuel is coming through fine. Fuel lines have been checked. Fuel filter was on my list of things to replace before all this started happening so it probably does need replacing but I'm not sure it what cause the issues I'm having. Like I said, fuel is getting through.

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    Regular Member bibu16v's Avatar
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    Vehicle : Vectra C

    Trim : SW Elegance II Sapphire Black

    Engine : Z18XER

    Year : 2008

    Mileage : 160k km>>

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    Well, nothing about pressure or debit/flow...appreciating these parameters by plain eye-sighting could be deceiving especially by lacking a relevant experience...just saying.

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    Vehicle : vectra 2007

    Trim : sri

    Engine : z18xer

    Year : 2007

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    If the engine Temperature sensor fails (mounted at the rear of the thermostat housing) all sorts of problems can arise, without a engine management warning being thrown up. They are only around £10.
    They can change value, or go open circuit.

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    Regular Member JagRigger's Avatar
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    Vehicle : Vectra

    Trim : Design

    Engine : 1.8 VVT

    Year : 2007

    Mileage : ... 268K!

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    When my crank sensor was on the way out, it took a while before it coded. Drove horribly in the interim

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    Vehicle : Vectra c1.8

    Trim : Sri

    Engine : 1.8

    Year : 07

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    I'm just at a complete loss now. Engine will now turn over, it starts to rev and then just dies after a lot of engine shaking and misfiring. Before, if I left it at idle, it would steady out. It was only when pressing accelerator I had an issue. Now it just dies 30 secs after engine turning on. I've noticed the fan is coming on with ignition and then will go straight off again. It will also come on as soon as the engine is on but the engine is cold. Could this be a sensor issue? I'm not in a position where I can keep firing parts at it in the hope it will go. Could still be a fuel filter issue but without testing it I can't really gauge what the fuel pressure is. It does seem to be working OK though as it's firing out.

  10. #8
    Full Member Fastcabs's Avatar
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    Vehicle : Vectrarri

    Trim : I would say so

    Engine : Z19DTH

    Year : 2007

    Mileage : 139500

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    Timing? When was belt / tensioner changed?

    Know anyone with a compression tester? Rules out anything serious….

    How’s the air intake / air box below the filter? Any leaves? Filter good? Brand new MAF sensor or 2nd hand? Wiring damage / bent pins at connector?

    Outside possibility……cross threaded spark plug?

    Why a new fuel pump but not filter as well?

    I dunno mate, all the symptoms fit with being MAF related and you had that code.

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    Full Member Fastcabs's Avatar
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    Vehicle : Vectrarri

    Trim : I would say so

    Engine : Z19DTH

    Year : 2007

    Mileage : 139500

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    Quote Originally Posted by beavor-bob View Post
    If the engine Temperature sensor fails (mounted at the rear of the thermostat housing) all sorts of problems can arise, without a engine management warning being thrown up. They are only around £10.
    They can change value, or go open circuit.
    TBH this seems very likely especially with fan issue. Good luck anyways. Hopefully you get it resolved.

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    Vehicle : Vectra c1.8

    Trim : Sri

    Engine : 1.8

    Year : 07

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    Quote Originally Posted by Fastcabs View Post
    Timing? When was belt / tensioner changed?

    Know anyone with a compression tester? Rules out anything serious….

    How’s the air intake / air box below the filter? Any leaves? Filter good? Brand new MAF sensor or 2nd hand? Wiring damage / bent pins at connector?

    Outside possibility……cross threaded spark plug?

    Why a new fuel pump but not filter as well?

    I dunno mate, all the symptoms fit with being MAF related and you had that code.
    Air is good. No blockages at all. Wiring is all good on maf. It was a brand new one from Euro. I made sure of that because I read that any of the cheapo ebay ones don't work.
    Fuel filter should have been changed. It was literally the next thing on my to do list before all this started happening. One has been ordered and on it's way. I'm leaning more towards the sensor. Going to pick a new one up tomorrow so will update then. We tried bridging the connection and that's when it improved but then it just decided to get 10x worse after that. I just don't get why there's no warning lights and no pending codes

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