alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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As title, the Corsa's started developing a massive misfire every now and again. I'll be driving along, stop at a set of lights or something then when I go to pull off it misses like crazy - so much that I can't rev it past 2k and it doesn't get me up to any speed. It hunts when on idle when it's doing it as well. I was under the bonnet the other day trying to rev it with the throttle when it was missing, it was as if it was 'building pressure' and then actually 'backfiring' out the induction kit... There's a noise like a rattling coming from the front of the rocker cover that sounds maybe as if it's arking, but by the time I get it home to have a look at it it's stopped doing it. It only does all this when it's heated up more than 90deg.
I know that's a bit long winded, but I've tried to be as detailed as possible. Has anyone had any similair problems? If so, what cured it? Cheers.
[Edited on 20-11-2009 by alan-g-w]
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johnhara1
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Registered: 19th Oct 06
Location: Newcastle upon Tyne
User status: Offline
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Check Plugs, Leads and the Dizzy Cap\Arm for the miss fire.
Is the EML on, if it isn't wired up get that done and flash the codes out. It'll make life alot easier for you.
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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Cheers for the reply mate. The EML does come on, but I was under the impression that to take the codes the light had to be on at the time... It only ever comes on when driving on the motorway or similair type of speed. Could I still read the codes with the EML off?
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B3KAN
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Registered: 15th Feb 07
Location: Inverness, Highland
User status: Offline
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quote:
Originally posted by alan-g-w
Cheers for the reply mate. The EML does come on, but I was under the impression that to take the codes the light had to be on at the time... It only ever comes on when driving on the motorway or similair type of speed. Could I still read the codes with the EML off?
If the light has come on then there should be codes stored so they should still show up.
Another cause for that misfire could be a fooked AFM or even lambda
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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Ah right, cheers.
I was thinking AFM when it started hunting tbh. But I've thought it couldn't be that due to the fact it's fine 95% of the time.
I'll have a look and see if I can get the codes out it then, cheers for replies.
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Slammed_Corsa
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Registered: 30th Oct 05
Location: Greenock, Inverclyde
User status: Offline
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would look at the coolant temp sensor alan if it is doing it at a certain temperature.
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alan-g-w
Member
Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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That's what I'd have thought mate, trouble is I got a brand new one just a few months ago. I'm thinking there's a chance it could maybe to do with the air temp sensor - what are the symptoms of it failing?
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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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take the plugs out and check the terminals/caps at top of the sp..
my old xe had this problem and it was down to them being loose also a few outhers have had this issue
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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Aye mate, that's the kind of thing I'm going to start with. Going to have a look at it later on today, I'll report back if I find anything.
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--ToM--
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Registered: 23rd Nov 07
Location: Wirral
User status: Offline
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i had this problem on mine, check the following
AFM
CTS
PLUGS
LEADS
DIZZY
ROTOR ARM
COIL
WIRING TO THE COIL AND DIZZY
THROTTLE POSITION SENSOR (this is what i fould it to be on mine)
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Jenko_Sport
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Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
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Check crank sensor aswell.
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--ToM--
Member
Registered: 23rd Nov 07
Location: Wirral
User status: Offline
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i was going to say that myself but normally if crank sensor is fucked it wont spark
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Jenko_Sport
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Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
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Could just be dirty, mine did the same, ran like shite once warmed up.
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