GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: gtiballs61 on 30 April 2012, 14:43
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Gremlins are back.
Trying to sort my running issues :cry:
Think its now my
air flow sensor,bought 1 off ebay only 3 month old.when fitted the revs
bounce from 800-1000 rpm.
Do I need to disconnect the battery after/before fitting?
The problem I'm having is what feels like a bad missfire in all gears,even does it on acceleration.
Changed:
Dizzy cap,dizzy,temp sensor,coil,plugs,leads,fuel filter.
Ecu relay,fuel relay,lambda sensor.
Vag now says Iat sensor-temp high-circuit low :undecided:
Any help plz
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Does it run any better with the air flow sensor disconnected?
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Does it run any better with the air flow sensor disconnected?
Yes
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Does it run any better with the air flow sensor disconnected?
Yes
Same thing happened to mine about 12 months ago. After changing everything I realised it was the MAF.
Got a new one and it ran perfectly ever since.
If there is anyone in your area who would be kind enough to lend you their MAF sensor for a few hours to confirm or negate whether it is that, might save you a few quid if its something else before you go purchasing a new one.
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Put the new(3 month old) maf on,now the revs slightly bounce from 800-1000 rpm :undecided:,but the miss fire has stopped :undecided:
Do i need to disconnect the battery for sometime to reset the ecu?
Me heads baffled
Also tried a friends maf with the same p/n: 037-906-461B and it does the same bouncy revs on tickover :undecided:
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no need to 'reset' the ECU.
Might be another problem causing bouncing RPM. Check for air leaks?
Ignore the IAT for now - its a minor fuelling correction.
James
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no need to 'reset' the ECU.
Might be another problem causing bouncing RPM. Check for air leaks?
Ignore the IAT for now - its a minor fuelling correction.
James
But with the old maf on it doesnt have bouncy revs,just get the bad miss fire/idle issue :undecided:
also to note,it does run rich,get a strong smell of fumes
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Found this :undecided:
(http://i791.photobucket.com/albums/yy200/skippybigballs/IMAG0185.jpg)
(http://i791.photobucket.com/albums/yy200/skippybigballs/IMAG0182.jpg)
(http://i791.photobucket.com/albums/yy200/skippybigballs/IMAG0186.jpg)
(http://i791.photobucket.com/albums/yy200/skippybigballs/IMAG0184.jpg)
Came from under the air box
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Isnt that your headlight dim dip resistor?
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Isnt that your headlight dim dip resistor?
Yes that is for headlights so not your problem i'd start by getting a new temp sensor on your coolant flange :smiley: this would make your car run rich :wink:
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Isnt that your headlight dim dip resistor?
Yes that is for headlights so not your problem i'd start by getting a new temp sensor on your coolant flange :smiley: this would make your car run rich :wink:
I got one of those.could it be a faulty new one?(got from tps)
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Isnt that your headlight dim dip resistor?
Yes that is for headlights so not your problem i'd start by getting a new temp sensor on your coolant flange :smiley: this would make your car run rich :wink:
I got one of those.could it be a faulty new one?(got from tps)
Its possible yes i have once bought a faulty one from the dealer which they replaced and worked a treat :smiley: again the same can happen with coils aswell i've read a few storys about faulty ones from new so might be worth trying another one of them also. Other thing is crank position sensor this went on my old 8v first starting off running really poor for few weeks then one day wouldn't start :sad: This is the problem with these cars they can be a right headache if nothings showing on vag-com round and round in circles :sad:
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i had simular issue when like a t1t i removed the oil splash guard under the cam cover as i thought it was making a racket, well after a few days oil got into the throttle body and when driving and changing gears, it felt like the engine was going to fall out. when i would start the car up it would rev over 2k rpm and snap crackle & pop, after taking it all apart again i realised i had some oil sitting in the throttle body cleand this out and the started it, still same. got someone out to check with proper vag com and he reset the throttle body and since then its been sweet!
does your car rev straight over 2k rmp? does it pop and back fire?
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yeah does pop and backfire when driven hard through the gears.Also runs very rich.
how do you reset the throttle body?
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using VCDS - http://wiki.ross-tech.com/wiki/index.php/Throttle_Body_Alignment_(TBA) (http://wiki.ross-tech.com/wiki/index.php/Throttle_Body_Alignment_(TBA))
Not all cars require it though.
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battery off for 20 mins,that helps sometimes
maybe your lambda is goosed