GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: indi on 15 July 2010, 10:18
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i bought a 99 golf gti turbo about a month ago knowing it had a few minor faults (door lock modules maf sensor and a few minor bits) anyway yesterday i orderd a new maf as the car was running very poor crap idle very poor consumption and a lot of backfiring from 3rd to 2nd gear :sad:
After fitting the new maf i started the car all seemed very good smooth idle and i thought id cracked it, it wasnt until i went to drive it it started to die on me under acceleration at about 1500 revs but not all the time.
This morning car wouldnt fire up without me pressing the accelerator (never ever happened before) but when i got it going power was smooth and back to normal but with the odd occasional gudder in power
Ive checked the hoses ive cleaned the 3 week old spark plugs so is the new maf foooked, i left the battery disconnected for the best part of 4 hours
HEEELLLPPPPP Plz :cry:
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Got to be the Coil packs.
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Think it could be the plugs they were black has hell ? and only 3 weeks old?
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When you say judder in power do you mean you will press the pedal but nothing happens and then have to give it a few stamps to get it back on power again?
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doubtful it's coilpacks on an AGU...
Could be a number of things; split hoses, ignition amp failing, throttle body needing cleaning...
If your plugs are black then it was overfuelling, have you cleaned them since the new MAF was fitted? This could be somewhere to start.
Do you have access to VAG COM to scan for faults?
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yes its been overfuelling very bad 30 miles to a £10 of fuel and where talking with slippers on not boots :wink:
i can get access to a vag com at the weekend and yes cleaned the plugs when i fitted the maf but for £16 i might just throw some new ones in
many thanks
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When you say judder in power do you mean you will press the pedal but nothing happens and then have to give it a few stamps to get it back on power again?
when you start to accelerate it briefly gudders then its back as normal? but its not all the time
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doubtful it's coilpacks on an AGU...
Could be a number of things; split hoses, ignition amp failing, throttle body needing cleaning...
If your plugs are black then it was overfuelling, have you cleaned them since the new MAF was fitted? This could be somewhere to start.
Do you have access to VAG COM to scan for faults?
+1 id guess at the ignition amp :smiley:
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Right just installed new plugs cleaned the throttle body and checked all hoses no leaks or splits
Still same :cry:
Ign amp failing will have to get it checked still strange how it's never had a problem starting but now it's constant :cry:
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AGU ignition module test:
http://forums.audiworld.com/showthread.php?p=1535031
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where are you from?
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Heanor Derbyshire just off 26 m1
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Heanor Derbyshire just off 26 m1
Pop down to leicester and I will take a look for you, just give us a bell 1st make sure a tech will be there.
Nick
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Nick your a star :smiley:
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Fault found there's not enough air coming through the air filter
Time for an induction kit any recommendations pipercross? Or k&n?
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Just stick with a good panel filter like Pipercross
Was your old filter filthy? or was the air intake itself blocked? :huh:
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No looks totally brand new and cant see any blockages at all are induction kits a no no then ?
I know on my old sti's they used to blow mafs constantly
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There nowt wrong with having an induction kit, but without other mods to increase performance you will see zero benefits.
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only thing with an induction kit is they drag the engine bay air in which is hot. Also how did you find out there isn't enough air going in?
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theres a guy around the corner from me who i was talking to, he has a pipercross panel filter in his so we swapped and went for a drive and the problem was solved.
it started instantly without haveing to press the accelerator ticked over smoothly and power was also smooth and progressive.
put the old panel filter back in last night and this morning pig to start again so off to get a new filter in a mo when ive finished at work dont know what to do for best now though panel or induction?
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Go for a pipercross panel filter mate, induction kit will just lower your mpg and decrease your performance as it will just suck in lots of hot air.
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Thanks alex :smiley:
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yeah unless you want to get a cold air induction pipe go for a Piper X, tried and tested.
I have a piper X cone filter on the end of my CAI as advised by Dr. Nick :grin: