Astra Gsi MK4 Engine Fault - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Jdhazz

Member

Registered: 4th Jul 06
Location: MK
User status: Offline

15th Jun 10 at 20:27

HI

I have a 2003 MK4 Astra Gsi that hunts on idle and is over fueling. i have my own code reader i have read codes on ECU and replaced AFM and both lambda sensors. The car has been into vauxhall to diagnose the fault and they have said lambda sensors or ecu, i do not want to replace the ecu and stil have the same fault. However i have read up on "The earth mod" on forums i believe i have cut the resistor out the circuit and replaced with some wire my car was then running fine. i taped up the loom and put the car back together and the fault has reappeared i have tried going over the previous steps but it has no bearing on the fault

Regard

Jermaine

Jake

Member

Registered: 24th Jan 05
User status: Offline

17th Jun 10 at 17:38

bump any ideas?

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

17th Jun 10 at 18:40

what fault codes are you getting

Jake

Member

Registered: 24th Jan 05
User status: Offline

17th Jun 10 at 18:43

he said lambda sensor and afm - p0100 and p0300 if that makes sense

[Edited on 17-06-2010 by jake]

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

17th Jun 10 at 19:08

p0300 is Random/Multiple Cylinder Misfire Detected. i would change sparkplugs and coilpack

Jake

Member

Registered: 24th Jan 05
User status: Offline

17th Jun 10 at 19:20

cheers for that mate. its been playing up for ages so hopefully a new pack and plugs will sort it out

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

17th Jun 10 at 19:26

also has it got a dumpvalve

Jake

Member

Registered: 24th Jan 05
User status: Offline

17th Jun 10 at 19:28

its got the wastegate blocked off or something

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

19th Jun 10 at 18:15

any luck yet

Jake

Member

Registered: 24th Jan 05
User status: Offline

19th Jun 10 at 18:17

i think replacing the wrong parts has skinted him so cant afford a new coilpack yet, i will update the thread when he's got a new one

Jake

Member

Registered: 24th Jan 05
User status: Offline

1st Sep 10 at 20:05

hes fitted a new coilpack but the misfire is still there

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

2nd Sep 10 at 17:45

what fault codes are you getting

Jake

Member

Registered: 24th Jan 05
User status: Offline

2nd Sep 10 at 18:26

still p0100 and p0300 although he has yet to change the plugs. if the plugs dont cure it what else could it be?

cheers

[Edited on 02-09-2010 by jake]

DERV-POWER

Member

Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline

2nd Sep 10 at 19:20

what make was the replacement maf (afm)

Jake

Member

Registered: 24th Jan 05
User status: Offline

2nd Sep 10 at 20:21

i dont know i will find out and post back tomorrow. the coilpack he replaced is a genuine one though

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