small engine problem to sort

[juliet 0]

Right, il shorten the problem, last one never got a reply, Car started spluttering. Have ran round with air flow meter disconnected for months, because it ran quite well whilst rolling but was a bag of you know what when stationary. Fitted new bosch lambda sensor last week, car ran a dam site better with air flow meter connected but very lumpy an low revs. Disconnected Air flow meter and hey presto car runs not to bad, doesn’t back fire and doesn’t splutter. Im assuming that the lambda sensor was part of problem. Trouble is with the MAF connected never got any fault codes it just over fuelled the car to point of 8 mpg. Disconnected up to 22 mpg. Only fault codes are 515 and 513. Are these fault codes always there because when the car is not running they are generated or are they genuine? The car runs so im certain either of these sensors is required to start the car. Does the MAF problem maybe suggest that there is a problem with the wiring between it and ECU but its not generating a fault code?

Any suggestions greatly appreciated.

Thanks

Homer

[craggsy 91]

Have you replaced the MAF?

If not then try one that does work as to me it sounds like a buggered MAF

[juliet 0]

This is a working MAF, from a recently running car, not only that in the last 5 to 6 months iv bought about 6 of these things, im either very unlucky and have bought 6 broken MAF,s or it is something else. There is as far as im aware no way to test them.

[Guest Nero1701]

where are you?

if your close you can come test your maf on my car?

[ingham 5]

sounds like a broken wire going to the maf?