Please help or advise

[s2-1.5bar]

Hi Everybody,

Seems eventualy I got rid of boost leaks. ( My opinion)

Now I had a strange behavior of with fueling.Will try to explain:

I got A/F meter fitted inside dashboard. When I drive normaly without sudden "pedal to the metal" the A/F ratio (lamda) shows (most times) about 1, which is normal.

As soon I push it hard-the boost goes to 0.8bar, but A/F lights goes down and disapears-no readings. There is no boost cut out, just strange pulling power. I trying not to push hard in case A/F mixture goes lean.

Could be faulty MAF, Temp sensor on top of IM, or fuel pump?

Any suggestions?

Of if anybody in NW area can lend their MAF for 10min, so I can eliminate-find troublemaker in the car.

Cheers

Andy

[Chris M]

Sounds like it could be MAF, try cleaning it along with the sensor on top of the IM. Also lambda could be faulty.

HTH,

Cheers,

Chris

[s2-1.5bar]

Lambda probe-fitted new 4 months ago, MAF cleaned with IPA 2 weeks ago, IM temp sensor cleaned

Any ideas how to check these items with basic circuit tester-multimeter?

Cheers

Andy

[mcandmar]

Does an S2 have a throttle position sensor? There a common failure on 7A engine's, when they go the car still drives but not very well.

[audiman]

Which way is it going?? Lean or rich?

[audiman]

Any fault codes?

[s2-1.5bar]

Which way is it going?? Lean or rich?

Lean.

[audiman]

Fuel pump failing??

[s2-1.5bar]

Fuel pump failing??

I hope so-cheaper than new MAF

Thinking of fitting Sytec (Max pressure 8.0bar, pressure lock out 115psi, 180ltr/hour@3.0bar), price~ £150

[Ski]

Hi... Im in Old Trafford if you want to borrow my MAF. I would drive down to you but Im a bit broke since ive just emptied my pockets on lots of new toys / upgrades.

[s2-1.5bar]

Hi... Im in Old Trafford if you want to borrow my MAF. I would drive down to you but Im a bit broke since ive just emptied my pockets on lots of new toys / upgrades.

Hi,

Thanks for the offer. I planing to go to Manchester next w/end(sat) if you got spare half an hour that should do to me. Any time that suits you most.

Regards

Andy

[WabTheKing]

im not using mine at the mo as im rebuilding - my work is at the top of the m67 in hattersley save ski taking his apart

will

[s2-1.5bar]

im not using mine at the mo as im rebuilding - my work is at the top of the m67 in hattersley save ski taking his apart

will

As in Yellow pages TV advert: " You Are Very Very Nice People"

Will pm you will tomorrow with regards of borrowing MAF.

Cheers

[Ski]

As in Yellow pages TV advert: " You Are Very Very Nice People"

Will pm you will tomorrow with regards of borrowing MAF.

Cheers

Im not nice I was going to charge you by the hour

nah seriously if u still need it next weekend give me a shout

[s2-1.5bar]

The Gremlin is located-faulty MAF,

Many thanks to Will, for letting me his MAF