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missfire!! please help,
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Old 26 Jun 2009, 06:13 PM   #1 (permalink)
Young Scooby
 
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missfire!! please help,

ok so with all the problems i have had i got another, missfire on idle doesent seem to bad throught th rev range but you can feel it, also stalls becaause the revs drop that low,, now i pulled the loom by the battery tray and fuses and it then runs ok then not so i know it is a wiring fault.

now i have cut back plastic to reveal all wires and cant really see anything a miss pulled the two plugs apart and cleaned them with electrical cleaner to no joy, can someone plese help[????
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Old 26 Jun 2009, 07:14 PM   #2 (permalink)
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Re: missfire!! please help,

right now i am stuck its thrown up 4 new codes
21 23 24 31
coolant temp sensor maf sensor isc valve stick, and throtle position sensor
i am real stuck with this guys,,,,
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Old 26 Jun 2009, 07:28 PM   #3 (permalink)
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Re: missfire!! please help,

gap in spark plugs, good type fuel, air intake clean it.

ps when ypu say you took x2 plugs out what do you mean
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Old 26 Jun 2009, 08:21 PM   #4 (permalink)
Young Scooby
 
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Re: missfire!! please help,

by the battery trat there are two plugs connecting the loom, just cleaned them up,
spark plugs were regaped to .75 today 3rd time i have done it lol always use super unleaded
and v power where i can. it is really doing my head in now,,
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Old 26 Jun 2009, 10:20 PM   #5 (permalink)
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Re: missfire!! please help,

the only other thing i could think off is a valve problem, burnt out valve maybe???
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Old 26 Jun 2009, 10:47 PM   #6 (permalink)
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Re: missfire!! please help,

Quote:
Originally Posted by ben281083 View Post
right now i am stuck its thrown up 4 new codes
21 23 24 31
coolant temp sensor maf sensor isc valve stick, and throtle position sensor
i am real stuck with this guys,,,,
Alright fella theirs no engine light up now is their???? Id reset Ecu cause these codes might not all be the problem last mechanic might have disconnected these without disconnecting battery first and cause them codes to store in memory so Id reset ecu take negative lead off the battery for the night connect in moring take car for a spin then after spin turn engine off test for any codes in memory then. When was the last time you had a maf sensor changed and when last did you clean the idle air control valve (iacv)?????
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Old 27 Jun 2009, 10:17 AM   #7 (permalink)
Young Scooby
 
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Re: missfire!! please help,

ok mate cheers for that, i changed the maf and knock sensor only this week, and i have never cleaned the iac valve to be honest will give it a go tho, will keep you posted
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