View Full Version : MAF do I need it?
Vorlon
29th January 2012, 05:18 PM
Hi
I have a 96 disco with 137.000 ks converted to gas.
I have been tinkering around an discovered that my MAF has know mesh in it, is this right for a gas converted disco, do they remove it for some reason?
While tinkering I found that when I disconnected the MAF the car drives and idols fine on gas or petrol, why is this I thought the MAF was important in fact I removed the MAF and put a cone filter right up to the gas thingy.
Can anyone confirm what I've done is ok or not.
Cheers
p38arover
29th January 2012, 05:33 PM
Your MAF mesh has been blown out by an LPG backfire. Ask me how I know.
roverv8
29th January 2012, 05:41 PM
assuming your LPG system is a simple mixer type and not gas injected.
it will run fine on LPG without the MAF, as the LPG system is independent to the EFI system, LPG is simply fed to air intake by the mixer from the converter
However, running on petrol without the MAF is a different story
IT will run, but very rich, (be like driving around with a choke on)
the EFI system needs the MAF
a backfire can cause damage to the MAF,
Vorlon
29th January 2012, 06:07 PM
Thanks for the quick replies.
So until I get a new MAF there's no prob in leaving it the way it is?
Can you guys point me in the right direction and price of a new MAF?
Cheers,
HangOver
29th January 2012, 11:33 PM
search on USA ebay.
I saw some for about AU$120 excluding delivery
delivery SHOULD be less than $50
Vorlon
30th January 2012, 05:04 PM
I had a look on eBay but the only
MAF that I could find that looks like mine is $580.
Can i use one of the other ones or does it have to be same as what I have.
Thanks
HangOver
30th January 2012, 06:17 PM
try these:
LAND RANGE ROVER DISCOVERY 94-04 MAF MASS AIR FLOW SENSOR 0280.218.010 MHK100800 | eBay (http://www.ebay.com/itm/LAND-RANGE-ROVER-DISCOVERY-94-04-MAF-MASS-AIR-FLOW-SENSOR-0280-218-010-MHK100800-/320774891442?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ADiscovery&vxp=mtr&hash=item4aafac67b2)
LAND RANGE ROVER DISCOVERY DEFENDER 90 MAF MASS AIR FLOW SENSOR METER ERR-5595A | eBay (http://www.ebay.com/itm/LAND-RANGE-ROVER-DISCOVERY-DEFENDER-90-MAF-MASS-AIR-FLOW-SENSOR-METER-ERR-5595A-/320774897610?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ADiscovery&vxp=mtr&hash=item4aafac7fca)
NEW MASS AIR FLOW SENSOR METER MAF FOR LAND ROVER | eBay (http://www.ebay.com/itm/NEW-MASS-AIR-FLOW-SENSOR-METER-MAF-LAND-ROVER-/290551233379?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ADiscovery&vxp=mtr&hash=item43a633fb63)
1987-1995 MASS AIR FLOW SENSOR METER MAF FOR LAND & RANGE ROVER 1987-1995 NEW | eBay (http://www.ebay.com/itm/1987-1995-MASS-AIR-FLOW-SENSOR-METER-MAF-LAND-RANGE-ROVER-1987-1995-NEW-/150727194098?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ADiscovery&vxp=mtr&hash=item23180a75f2)
HangOver
30th January 2012, 06:21 PM
BTW yes it needs to be the same or same part, it can be OEM or aftermarket
It'sNotWorthComplaining!
30th January 2012, 10:54 PM
Your MAF mesh has been blown out by an LPG backfire. Ask me how I know.
Ask also how I know, twice:o
It'sNotWorthComplaining!
30th January 2012, 10:57 PM
The cheap NEW ebay units are a chinese knock off of the 5AM maf.
I've used them, never had a problem Uk ebay has them also.
Vorlon
1st February 2012, 09:08 AM
Ask also how I know, twice:o
Ok,Ok how do you know, lol
Vorlon
2nd February 2012, 01:58 PM
Hi
I asked a gas conversion place about the MAF and he said they usually knock out the screen to get it tuned better because they can never get it tuned properly on both fuels so they just tune it to run best on gas.
Cheers
bee utey
2nd February 2012, 04:05 PM
Hi
I asked a gas conversion place about the MAF and he said they usually knock out the screen to get it tuned better because they can never get it tuned properly on both fuels so they just tune it to run best on gas.
Cheers
D'oh, I wouldn't remove one deliberately, if you can't tune it with the mesh in you shouldn't call yourself a LPG expert.:p In my experience they make virtually no difference to lpg tuning, but the MAF may or may not run well on petrol. Anyway, if your vehicle spends 99% of the time on LPG all petrol has to do is get you to the next service station. :)
It'sNotWorthComplaining!
2nd February 2012, 05:37 PM
Ok,Ok how do you know, lol
usually it's after the BIG Bang you get from a back fire through the plenum to airbox, usually it blows the maf and if you are further unlucky, your airbox is blown apart.
Usually the result of poor ignition system, or it can happen if you try to switch from gas to petrol without stopping the engine 1st.
bee utey
2nd February 2012, 07:10 PM
...or it can happen if you try to switch from gas to petrol without stopping the engine 1st.
Sign of a badly set up conversion if you can't swap fuels on the go. Properly adjusted the injector cut relay has a delay that overlaps the two fuels. I sometimes demonstrate to people how you can flick backwards and forwards between the fuels, all you get is a bit of a jerky motion.
Vorlon
2nd February 2012, 07:34 PM
When on the go mine changes fuels without a problem,
Dont even notice the change.
Cheers
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