dipsomaniac Posted September 23, 2006 Report Posted September 23, 2006 i have had a car with a faulty maf before and engine will idle ok but lacks power. has anyone had a faulty maf that renders the car undrivable - no idle or power? Quote
NikpV Posted September 23, 2006 Report Posted September 23, 2006 i have had a car with a faulty maf before and engine will idle ok but lacks power. has anyone had a faulty maf that renders the car undrivable - no idle or power? If the signal fropm the maf is out of spec then then ecu will use a default value so its at least drivable Quote
Guest bigal Posted September 23, 2006 Report Posted September 23, 2006 I had this same problem on my Passat it got so bad you couldnt drive it at all. Get yourself a new MAF and everything will be fine. :lol: Quote
Guest MATT Posted September 24, 2006 Report Posted September 24, 2006 As Nikpv said, if the MAFs signal is non existent, or doesn't match up = the ECU reverts to a default setting. So it should still run, just lack power. MATT Quote
dipsomaniac Posted September 24, 2006 Author Report Posted September 24, 2006 bigal - can you confirm the symptoms as i was under the impression that the car should still be driveable even with a faulty/disconnected maf. Quote
Guest bigal Posted September 24, 2006 Report Posted September 24, 2006 dipsomaniac, i can only go with what happened on my Passat but it started off with a slight stutter at 4000rpm and then at about 1800rpm, i didnt know what was wrong at the time but after only a few weeks i got in the car and tried to set off and the car wouldnt rev above 1500rpm even slipping the clutch wouldnt work eventually wouldnt even turn over. I had to have the car towed to garage, fitted new MAf and all was rosey again. I must admit i never tried unplugging the Maf as back then i didnt know what was wrong. This was a 1.8 T Passat. Hope you get it sorted mate cheers Alex Quote
dipsomaniac Posted September 24, 2006 Author Report Posted September 24, 2006 cheers Alex - i am on the point of giving up at the moment and taking it to a garage. last time i had a misfire it cost me over Quote
wood73 Posted September 25, 2006 Report Posted September 25, 2006 i have had a car with a faulty maf before and engine will idle ok but lacks power. has anyone had a faulty maf that renders the car undrivable - no idle or power?when i plug in the maf on mine it wont idle, seems to run ok, when i unplug it it idles perfectly but is slightly hesitant when i pull away.i replaced with a bosch exchange unit and it made no difference at all, but vag.com comes up with a fault saying low signal. so at present i'm just using it with it unplugged! Quote
NikpV Posted September 25, 2006 Report Posted September 25, 2006 sounds like the replacement is duff/wrong model or there is damage to its wiring Quote
wood73 Posted September 25, 2006 Report Posted September 25, 2006 sounds like the replacement is duff/wrong model or there is damage to its wiringis there any way of testing the wires running to the maf? i.e. output test on the connectors in the plug.otherwise i will have to get on the phone to gsf. Quote
NikpV Posted September 25, 2006 Report Posted September 25, 2006 Have you got red/blue, blue and 2 browns, if so I think that the red/blue is 12v supply, the browns earth ans the blue signal - if it helps Quote
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