s3 Rich 0 Posted November 7, 2009 Report Share Posted November 7, 2009 hello all, ran very low on juice last friday, just spluttered into a garage! was fine for the 6 mile drive home but next day once it had warmed up after a few mins it started missing briefly, mainly when at lower revs, as if some dirt has been sucked through? if i give it a bit of a revs it almost clears, if i drive hard it clears but again when idling its lumpy and missing. spoke to my local garage & they say it wont be dirt in injectors - more like an air block?anyone ever had the same & if so, is it easy to fix?coil pack less than 8k old, as are leads etc. obd1muchos gracias!! Richard Link to post Share on other sites
VDub_Steve 1 Posted November 7, 2009 Report Share Posted November 7, 2009 Have You tried Replacing The Fuel Filter? Link to post Share on other sites
s3 Rich 0 Posted November 7, 2009 Author Report Share Posted November 7, 2009 yes, did that & it made no difference.loads of crud in the old one but i suppose 16 years later it will have. Link to post Share on other sites
VDub_Steve 1 Posted November 7, 2009 Report Share Posted November 7, 2009 maybe try injector cleaner or check your idle control valve Link to post Share on other sites
s3 Rich 0 Posted November 7, 2009 Author Report Share Posted November 7, 2009 have injector cleaner in there now. done about 60 miles with it in, no difference.where abouts is the idle control valve situated? behind the throttle body? Link to post Share on other sites
VDub_Steve 1 Posted November 7, 2009 Report Share Posted November 7, 2009 might have to put it on vag com then mate might be a sensor Link to post Share on other sites
VDub_Steve 1 Posted November 7, 2009 Report Share Posted November 7, 2009 and yh idle control valve is near throttle body Link to post Share on other sites
s3 Rich 0 Posted November 7, 2009 Author Report Share Posted November 7, 2009 just seems wierd that it happened right after running out of juice.tell you what, i have been getting a bit of oil from the breather pipe seeping into the inlet bendy pipe, i seems to be leaking out just where that coil of wire is stuffed in, do you tink this could have blocked the ISV in some way?will have a look tomorrow, cheers for advice,Richard. Link to post Share on other sites
djmorgz 0 Posted November 7, 2009 Report Share Posted November 7, 2009 had this problem before although not with a vr i changed everything then used a flat blade srewdriver with the handle to my ear and touched the injectors with the blade and one wasnt clicking ....replaced that injector and fired straight up.....may be worth checking the injectors tho Link to post Share on other sites
Rikki 2 Posted November 7, 2009 Report Share Posted November 7, 2009 Yea mine did this but it cleared on its own after a day or 2. Probably dragged up some sludge from the tank and its stuck somewhere!! Try some injector cleaner! Link to post Share on other sites
s3 Rich 0 Posted November 16, 2009 Author Report Share Posted November 16, 2009 ok, cleaned everything on the air intake side now & checked all pipes for spilits / air leaks etc.the problem is now getting worse, the engine now seems to miss nearly all of the time but not when first cold????could this be the lambda sensor, & where is it, cant see it under the bonnet - is it accessable from below? Link to post Share on other sites
s3 Rich 0 Posted December 10, 2009 Author Report Share Posted December 10, 2009 ok, replaced the lambda sensor, no change.replaced the crank sensor, no change.replaced the coolant temprature sensor, plus the housing as it was cracked, no change.the only thing left is the coil pack, but i cant understand why it would only start to mis-fire when hitting 80 degrees??????surely the coil pack would be not working from cold if it is faulty??anyone want a vr6? Link to post Share on other sites
kie_dub 0 Posted December 10, 2009 Report Share Posted December 10, 2009 get the vag com on it before you spend more money on replacing sensors that may not need replacing mate Link to post Share on other sites
s3 Rich 0 Posted December 11, 2009 Author Report Share Posted December 11, 2009 done that, it came back with crank sensor & ecu faults, we put the ecu down to the fact the imobiliser is switched off.replaced the crank sensor.tried this this morning - removed the coil pack from the block & ran uptp temperature, didn't mis-fire until well over 90 degrees oil & fan had kicked in a couple of times.looks like it could be the coil pack - bummer. another £140 down the drain. Link to post Share on other sites
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