i just replaced my maf sensor with one from a member here and for some reason the engine light now comes on so i disconected the battery to reset it all and it still does it i put my old one back in and the engine light dissapers
any ideas the part number is789 8203f e5t06075 the one in the car is 338 0519h e5t06071
are there diffrent ones my car is a tj 2000 model
the other thing when i had the new one in if i changed it to lpg the engine light goes off

anyone got any ideas

so your original one has no check engine light

why are u changing it??

well i wanted a spare got to cars i run lpg on it and when travelling at 100kmh steady it starts to miss etc i got told clean the maf sensor as i allready cleaned throtle body new leads new spark plug leads

Mate,
I've seen the 338 type unit fitted to TL AWD's, TJ 2 tippys & TW Tippys and the cars had different ECU part numbers. Sounds like the ecu is set up / matched to the sensor ????
Is your LPG system the mixer (air valve) type or vapour injection?

Recently had a member with a stuffed dist cap, got a new cap and button (after market but japanese made) and the car ran on gas like crap.

Put on the genuine one again, ran perfectly

I am stuffed if I know why this has happened, the gas fitter seemed to thing that there may be an issue with the new cap which I called bullshit on until I saw for my self that this was causing the issue

As I said, was not some cheap rubbish brand either so there in may lie your problem

As for the MAF, the later TL/W do run different ones, not sure on TJII

the plot thickens :headbange

well i tried it on my te does exactly the same so i say i got a stuffed maf