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Offline Wolfie_

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Air flow meter
« on: January 04, 2008, 16:47:21 »
Im guessing its screwed, but to confirm it, The rangie backfired today and then was reving the nuts and bolts loose. When I checked, the air flap had stuck open in the meter so released it and tried to start it but wouldnt start unless I wedged the flap open so the flap is not moving as it should. I guess its operated by electronics and something has blown/broken

What do you reckon?
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Offline hairyasswelder

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Re: Air flow meter
« Reply #1 on: January 04, 2008, 16:58:16 »
To be technical------ it broke.
It should be free to move very easily,
The airflow also controls the fuel pump on early 3.5's so that why not starting  ;)
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'88 RR 3.5 efi, an on going project :o) evolving daily/slowly

Offline jjsaul

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Re: Air flow meter
« Reply #2 on: January 05, 2008, 01:21:20 »
As mentioned in the first reply, it should be free to move.
Don't bother trying to fix it...i've broken a few in my time (LPG backfires) and they're quite fiddly.
Get on ebay, you should be able to pick one up for less than £20 secondhand.
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James

...lovin dirty days out...

1983 OneTen V8 Station Wagon 3.5 (LPG)
1972 Range Rover V8
1992 Range Rover 4.6 (LPG)
1978 Range Rover Carmichael Commando 6x4
1972 Range Rover - Major project, FOR SALE
1976 Range Rover - Less of a project, FOR SALE
Previously: Range Rovers 1988, 1990 and others...
2005 Volvo V70 T5 SE (LPG) - daily driver

Offline Wolfie_

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Re: Air flow meter
« Reply #3 on: January 11, 2008, 19:46:34 »
well I put the new air flow meter on. and still no joy, when I try starting it was misfiring but wouldnt stay running. Thought id give the plugs a clean and thats when I noticed this



When it backfired it must have blew the pipe of as it had no jubilee clip securing it. refitted it and and started straight up  :doh:
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Offline Range Rover Blues

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Re: Air flow meter
« Reply #4 on: January 12, 2008, 03:50:01 »
I've had backfires bust my servo before now, it's worth having a pipe like that which will come loose when you need it to.  I ended up building a relief valve into my plenum to stop it damaging anything.
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Offline Wolfie_

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Re: Air flow meter
« Reply #5 on: January 12, 2008, 08:48:29 »
Thinking about it, it may be designed to do it as the pipe had no marks to suggest its ever had a clip on it, and theres no ridge on the metal pipe coming from the plenum to stop the rubber pipe coming off when tightened  down
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