MAF Fault that isn't the MAF....

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Doo

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Not sure where to go with this... I've got a problem that's been present for such a long time.

I had the local indie plug in his (exceptional) code reader ages ago and it came up with a MAF fault, so I bought a Bosch replacement and nothing changed.

I figured I'd wasted money and swapped back as the issue was still there, like a misfire.

I replaced plugs, leads and all sorts, but STILL this bastard misfire just on throttle. Clears upon hard throttle.

Got it code read again and it showed the MAF is at fault o_O

He thinks I have a wiring fault & he thinks it's the LPG wiring. However, the car runs the same on LPG and petrol, but the misfire is a tiny bit more pronounced on LPG (I would imagine because it's slightly less powerful).

I'm not convinced it's the LPG wiring, but the MAF plug checks out.

So has anyone discovered an issue with a MAF that turned out to be related (ECU, wiring somewhere in the loom, etc).

But if it was connected to the LPG wiring, where should I start because as I said, I'm not convinced it's been wrongly done, although I stand to be corrected. So where should I start with that aspect?

It's so bloody annoying :mad:
 
LPG needs a perfect ignition system, if there are any weaknesses in the system it will be more pronounced on LPG.

Coils?
 
I can appreciate that, mine has a MAF fault and runs ok, apart from being a tad rich..

I have put decent plugs, Magnecor leads, new coils and a Bosch MAF. So It does "appear" to be wiring, but where??
 
I have put decent plugs, Magnecor leads, new coils and a Bosch MAF. So It does "appear" to be wiring, but where??
tenor.gif

Rave has the wiring diagrams for the P38 IIRC
Use them to trace the wires from the MAF.

It should run OK with the MAF unplugged.
 
tenor.gif

Rave has the wiring diagrams for the P38 IIRC
Use them to trace the wires from the MAF.

It should run OK with the MAF unplugged.

Tried to download RAVE, my laptop shit itself so I gave up :rolleyes: If you would be a pal and copy a page for me please :)
 
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