Can anyone lend me a T4 MAF?

mitchyboy01 · Aug 24th, 2012, 09:14

My car has started to run lean through whole rev range recently and I'm trying to diagnose the fault. If someone could lend me a known to good MAF that would be a great help. So far I've datalogged MAF and TPS function. Both seem fine and respond instantly to throttle input and are linear? Swapped TPS for 2 others, tried 2 Good FPRs, new walbro 255 pump yesterday. No vac leaks and have -25in/hg on gauge. No air leaks post MAF pre turbo. Going to get a fuel pressure gauge on it today but after that, apart from the MAF I'm running out of ideas.

Thanks, mitch.

T4Rick · Aug 24th, 2012, 09:16

Only maf ive got spare is a phase 2

mitchyboy01 · Aug 24th, 2012, 09:22

Quote:

Originally Posted by T4Rick

Only maf ive got spare is a phase 2

Blimey that was quick lol. Thanks Rick, I'll get back to as I need to find out about fitment as mine in phase 1.5.

puntodan · Aug 24th, 2012, 09:42

I have a good spare phase 1 MAF if it helps.

Dan

960kg · Aug 24th, 2012, 10:16

I believe you should have the 3" Phase 2 MAF for an uprated T4

Only trying to help!

T4Rick · Aug 24th, 2012, 10:19

Quote:

Originally Posted by 960kg

I believe you should have the 3" Phase 2 MAF for an uprated T4

Only trying to help!

Oh so the 3 inch is the up grade Keith ?

T4Rick · Aug 24th, 2012, 10:20

Just looked at mine and i have the 3 inch one lol,what size is the std T4 phase 1 then?

T4Rick · Aug 24th, 2012, 10:21

I may keep mine then lol

960kg · Aug 24th, 2012, 10:30

Quote:

Originally Posted by T4Rick

Just looked at mine and i have the 3 inch one lol,what size is the std T4 phase 1 then?

No idea what the Phase 1 size is from memory.

Part number -2000 = 30611231 Phase 1 1.9 T4

Part Number 2001- = 30611532 Phase 2 2.0 T4

m1tch1987 · Aug 24th, 2012, 11:02

Just be careful that the 2 sizes have the same resistance etc, I know you can bolt on an RX7 AFM onto an MX5 for better flow, but due to the size difference the signal it gives out messes everything up lol

Aug 24th, 2012, 09:14	#1
mitchyboy01 Premier Member Last Online: Oct 25th, 2020 06:40 Join Date: Jun 2011 Location: Dover	Can anyone lend me a T4 MAF? My car has started to run lean through whole rev range recently and I'm trying to diagnose the fault. If someone could lend me a known to good MAF that would be a great help. So far I've datalogged MAF and TPS function. Both seem fine and respond instantly to throttle input and are linear? Swapped TPS for 2 others, tried 2 Good FPRs, new walbro 255 pump yesterday. No vac leaks and have -25in/hg on gauge. No air leaks post MAF pre turbo. Going to get a fuel pressure gauge on it today but after that, apart from the MAF I'm running out of ideas. Thanks, mitch. __________________ 855R, Standard, Manual, Black Interior. Nice. Stage 5 Saab 9-3 Aero V6 2.8T. 372bhp. 677nm.

Aug 24th, 2012, 09:16	#2
T4Rick Premier Member Last Online: Oct 11th, 2012 08:49 Join Date: Jun 2010 Location: manchester	Only maf ive got spare is a phase 2 __________________ I said a 10 second car not a 10 minute car Chipped and rolling roaded at 221.9 hp at std boost Horns relocated for better air flow with a Horn from a Vag,Coil overs fitted

Aug 24th, 2012, 10:16	#5
960kg Premier Member Last Online: Dec 28th, 2022 12:25 Join Date: Jun 2009 Location: Mercville	I believe you should have the 3" Phase 2 MAF for an uprated T4 Only trying to help! __________________ Mercedes C320CDI Sport Estate 3 litre V6 7 Gear Auto Remap 290bhp 628Nm torque @ 1600revs 45.1mpg

Aug 24th, 2012, 10:20	#7
T4Rick Premier Member Last Online: Oct 11th, 2012 08:49 Join Date: Jun 2010 Location: manchester	Just looked at mine and i have the 3 inch one lol,what size is the std T4 phase 1 then? __________________ I said a 10 second car not a 10 minute car Chipped and rolling roaded at 221.9 hp at std boost Horns relocated for better air flow with a Horn from a Vag,Coil overs fitted

Aug 24th, 2012, 10:21	#8
T4Rick Premier Member Last Online: Oct 11th, 2012 08:49 Join Date: Jun 2010 Location: manchester	I may keep mine then lol __________________ I said a 10 second car not a 10 minute car Chipped and rolling roaded at 221.9 hp at std boost Horns relocated for better air flow with a Horn from a Vag,Coil overs fitted

Aug 24th, 2012, 09:42	#4
puntodan Master Member Last Online: Sep 25th, 2019 17:16 Join Date: Oct 2010 Location: Surrey	I have a good spare phase 1 MAF if it helps. Dan

Aug 24th, 2012, 11:02	#10
m1tch1987 Premier Member Last Online: Dec 29th, 2013 12:08 Join Date: Apr 2011 Location: Berkhamsted	Just be careful that the 2 sizes have the same resistance etc, I know you can bolt on an RX7 AFM onto an MX5 for better flow, but due to the size difference the signal it gives out messes everything up lol __________________ 2003 Volvo V40 1.9D Sport - MPG below

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