cjtheman
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| posted on 10/3/07 at 07:47 PM |
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corsa
hi i have a 1.2 16v t reg vauxhall corsa
it starts when cold rund for about 4-5 miles then engine management light comes on and it cuts out until its cold again but its not over heating any
ideas cos its doing my head in
i have changed the coil pack
air filter
i have done head gasket
water pump
various other gaskets
cheers
colin
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dan__wright
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| posted on 10/3/07 at 07:50 PM |
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probably the O2 sensor or possibly the MAFM.
two most common things to go with the dis pack not that far behind.
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DIY Si
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| posted on 10/3/07 at 07:50 PM |
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Do you have a water temp gauge? Is it getting up to temp, and then cutting out? If so, might be worth changing the temp sender, as it could be sending
the ecu the wrong signal, making it think it's about to melt.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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cjtheman
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| posted on 10/3/07 at 08:08 PM |
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hi
dan what is mafm
also when it cuts out its like theres no spark turns over very fast but not trying
cheers
colin
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DIY Si
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| posted on 10/3/07 at 08:35 PM |
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Mass Air Flow Meter.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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rusty nuts
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| posted on 10/3/07 at 09:35 PM |
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quote:
Originally posted by cjtheman
hi
dan what is mafm
also when it cuts out its like theres no spark turns over very fast but not trying
cheers
colin
Had a similar problem with a Zetec engined Escort , it turned out to be excessive oil pressure pumping up the hydraulic tappets . Might be worth
getting the oil pressure checked.
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Humbug
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| posted on 10/3/07 at 10:07 PM |
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Sounds like the problem I had with my tintop in the recent petrol contamination situation. I was told that the O2 sensor is bypassed until the engine
comes up to temperature, then it starts spluttering/losing power/cutting out. Sensor replaced, now it's fine. Not necessarily the problem with
yours, but worth checking.
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owelly
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| posted on 10/3/07 at 11:22 PM |
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Try unplugging the coolant water temp sensor. If the fault appears instantly or if the fault doesn't appear when it usually does, then it was a
temperaure dependant fault. That could be the O2 or whatever. This will tell us if the temp thing is red herring! A similar fault on my Vectra
(although not always as predictable) cost me a fortune at the local Vauxhaul dealer. They fitted new crank sensors, cam sensors,MAF, O2 etc....
Some chum of mine commented that his Vectra had similar faults but it was fixed by the garage who, as well as fitting £300 worth of new parts, also
fitted a new battery. I fitted a new battery and the fault was no more!!
Keep us up to speed......
http://www.ppcmag.co.uk
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davie h
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| posted on 11/3/07 at 01:09 AM |
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i used to work as a vauxhall mechanic i will put money on it being the ecu temp sensor which is located on the inlet manifold its brass with a blue
plastic collar and two wires going to it. reach down the back of the manifold from the top and you will feel it. all its doing is telling the ecu
that the engine is running at a really high or low temp i used to get them reading anything from 200 plus to 200 minus degrees this will cause the
engine to cut out the car wil start but as soon as it starts to heat up the tempreture change makes the sensor go haywire hope this helps
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blueshift
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| posted on 11/3/07 at 02:20 AM |
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It does sound suspiciously like the fuel contamination problem recently.
you can try unplugging the o2 sensor, but leave it screwed into the exhaust. the engine should still run ok without it, though you may get MIL on. if
it runs ok when hot then you know you need a new one.
the problem as I understand it with the knackered ones is they tell the ECU lies and it tries to compensate the fuelling to the point where the engine
can't run any more. If it's disconnected the ECU just ignores it and falls back to its maps.
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cjtheman
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| posted on 11/3/07 at 08:20 AM |
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thanks for all your input guys looks like i got a morning under the car with a few things to try
cheers all
colin
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cjtheman
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| posted on 11/3/07 at 11:19 AM |
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right people its not the o2 sensor
dave i cant find the temp sonsor i have looked in the manual and in there is says its on top of the water pump can you confirm this
cheers
colin
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davie h
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| posted on 11/3/07 at 12:02 PM |
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it should be on the inlet manifold put your hand down the back of the throttle body from the top and feel your way down you should find it there. its
the ecu temp sensor not the one for the gauge
[Edited on 11/3/07 by davie h]
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cjtheman
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| posted on 17/3/07 at 11:54 PM |
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hi all
after spending hours under the bonnet
got a mobile tuner out
after all the hassle it was a knackered crank sensor
thanks again for all your input
cheers
colin
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