Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Hello all. Ive just bought a C20XE corsa with an apparent "superchipped" ECU. The car runs well sometimes and the power is perfect. But other times you have to take the ecu out and plug it back in because it doesnt drive very well. Basically in 4th and 5th it hardly pulls at all when the foots flat to the floor and then when you let off the accelerator and just roll along at maybe 60mph the car judders every now and again as if you were blipping the throttle. I was planning to get another Coilpack ECU to get rid of the stupid chip thing or can i take it out without damaging the current one? Cheers Scott
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--ToM--
Member
Registered: 23rd Nov 07
Location: Wirral
User status: Offline
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doesnt sound like the chips even causing it to be honest sounds more like an ignition problem
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sri boy
Member
Registered: 31st Aug 09
Location: glasgow springboig
User status: Offline
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Could b ure airflow meter starting to play up u took plugs out to see what there like always start with basics air fuel spark
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Not tried anything on it yet really. Would it be worth trying the paperclip test and see if that comes up with anything or will it not work on a converted car? Cheers Scott
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Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
User status: Offline
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quote:
Originally posted by sri boy
Could b ure airflow meter starting to play up
Sounds very similar to how mine went with a dodgy AFM tbh.
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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I'll try tracking down a 4 pin AFM then and see how i get on 
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Corsa_Sport21
Member
Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
User status: Offline
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Deffo sensor related.
By unplugging the Ecu all your doing is reseting it till it picks up the fault again.
Does it do it at random times??Either hot or cold etc.
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Well sometimes you can start it up and when you rev it it will misfire then other times it wont but when its warm and driving in 4th or 5th it always judders as said above and thats driving it sensibly. the EML light is constantly on but the boy i bought it from said it was just because it had a chipped ECU. Cheers Scott
[Edited on 04-10-2011 by Corsa_Scotty]
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Kieran
Premium Member
Registered: 12th Sep 08
Location: Kent
User status: Offline
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The bloke you bought it off is talking out of his bottom!
Try a paperclip test. I reckon it could be fuel related.
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--ToM--
Member
Registered: 23rd Nov 07
Location: Wirral
User status: Offline
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i can 100% tell you its not ecu related
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Will try the paperclip test and see how I get on lads
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Just done a paperclip test and got the following codes
12- Initiation of Diagnosis
31- Engine RPM signal(Crankshaft sensor) No signal
55- Engine Control Unit fault, Renew ECU
73- Air flow Sensor (AFS) Low voltage
[Edited on 06-10-2011 by Corsa_Scotty]
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Corsa_Scotty
Member
Registered: 8th Aug 07
Location: Scottish Borders
User status: Offline
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Ordered a new Air flow meter so still waiting on that. Anything else i should replace that should help get rid of the above codes? Cheers Scott
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