why am i over fueling so much!? HELP

mk3dave · Post by **mk3dave** » Sat Jan 22, 2005 5:26 pm

its been buggin me since ive driven the car now n its really gettin to me. im gettin about 120 miles to a FULL TANK! i took it in yesterday to get the clutch cablr changed and the guy said he'd sorted the timing out, so i was like brilliant. i had to pik it up after when he wasnt there, but when i drove of and home it was lagging so badly that i thought my handbrake was still on!
whats wrong? i need this sorting soon, i cant afford to fill my tank every 3 days.

dave

Tahrey1043 · Post by **Tahrey1043** » Sat Jan 22, 2005 5:36 pm

temp sensor, lambda probe & the wiring for such are the usual places to start out.. maybe thermostat if you notice that the engine never really gets warm

Gareth_GT_Hatch · Post by **Gareth_GT_Hatch** » Sat Jan 22, 2005 7:01 pm

what engine do you have? sounds like the car is in "limp-home" mode which occurs when ones of the sensors dies. and means about 17mpg! which even then is about 150 miles to a tank. Are you sure there isnt a big hole in it? I dont think the lambda will be at fault, in my experience the economy isnt affected that much when its not working. If its a GT my money would be on the throttle valve potentiometer.

mk3dave · Post by **mk3dave** » Sun Jan 23, 2005 11:40 am

yeh sorry its a beasty-ass 1litre. how do i get these sensors looked at or sorted. i think i can hear the car missin aswell despite the fact its got brand new plugs and leads.

Gareth_GT_Hatch · Post by **Gareth_GT_Hatch** » Sun Jan 23, 2005 5:03 pm

maybe your ignition timing needs setting up then? get a new blue temperature sensor as a first test. theyre about Â£5 from GSF (Â£8 from volkswagen) it goes in the thermostat housing near your distributor and has a blue plug going to it. Potentially if this has stopped working altogether then you may find that has caused it to go into "limp-home" mode as well.