missfire under hard throttle
25 May 2006, 09:30 PM
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missfire under hard throttle
hi all!!!!!! im new here but not to turbo cars but this has got me stumped i have a missfire under hard load more when on full boost in 3rd 4th 5th but once over 4000rpm its gos away and drives fine i have had new maf sensor knock sensor oxygen sensor all new boost hoses with 1.2mm bit in the boost line ecu reads no fault code 
the car is a my99 uk model with wrx05 intercooler hks dump valve powerflow from cat back .... any help please would make me a happy man again
the car is a my99 uk model with wrx05 intercooler hks dump valve powerflow from cat back .... any help please would make me a happy man again
25 May 2006, 09:57 PM
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I got a very similiar fault with mine mate although mine doesnt clear unless i back off.Just changed the leads thinking that would solve the problem,but no such luck.
Hope you get it sorted mate before it costs you anymore.
Hope you get it sorted mate before it costs you anymore.
25 May 2006, 10:01 PM
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im going to get at the plugs weekend. my99 so only one coil pack but had that checked. i think it could be plugs but before i got the car it had a full service with plugs less than 8000 mile ago cheers for your help i will post back and let you know how i got on. if it ever stops raining !!!!!!!!
26 May 2006, 12:01 AM
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hi mate.....
check the plug-leads are firmly pushed on the spark-plugs..
under heavy accelleration on my old my99 I popped off one of the leads.
might be worth checking...
Peppe..........
check the plug-leads are firmly pushed on the spark-plugs..
under heavy accelleration on my old my99 I popped off one of the leads.
might be worth checking...
Peppe..........
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26 May 2006, 09:14 PM
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after looking at my boost i think it may be over boosting does any one know what the fuel cut is on a my99 it hits 16psi then drops to 14 psi is this right
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