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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2261
Chile 2007 Defender 110 Puma 2.4 SW Chawton White
MAF figures
Gents

Is it kind of normal to read (in this case g/s) a range of maf figures lets say between 13 jumping to 17 and coming down again to 13 and so on at idle speed? Idea

Thanks Puma 110" SW

.............................................................
Earth first. Other planets later
Post #745076 10th Dec 2018 11:19pm
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 427
United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
Not sure how I can easily send you the full log, bu here's a screenshot of mine.

Click image to enlarge
Post #745086 11th Dec 2018 12:32am
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HardCharger



Member Since: 03 Mar 2013
Location: Manila, SFO, Amsterdam
Posts: 676
2011 Defender 110 Puma 2.4 SW Stornoway Grey
Re: MAF figures
MK wrote:
Gents

Is it kind of normal to read (in this case g/s) a range of maf figures lets say between 13 jumping to 17 and coming down again to 13 and so on at idle speed? Idea

Thanks


I think that range is about right. I found that out recently when doing a test drive while further troubleshooting my resurrected Puma.

According to my buddy, my MAF sensor was shot as there were times I would get those values and at times it would just be stuck at 7 g/s sometimes even 2 g/s. He said that's why I still get a knocking sound when we go around as the ECU cannot determine the correct amount of air for the proper mix. He told me that as soon as I replace the MAF sensor with a new, functioning one, the engine should smoothen out.

I'm sure the more seasoned members can verify or correct this.
Post #745092 11th Dec 2018 2:17am
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 427
United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
Aaaaaaand now I'm wondering if my MAF is out of spec. Confused Laughing
Post #745094 11th Dec 2018 2:34am
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Marks Landy



Member Since: 09 Feb 2015
Location: Cheshire
Posts: 296
United Kingdom 1985 Defender 90 200 Tdi SW Java Black
Have you cleaned the sensor?
Post #745095 11th Dec 2018 4:56am
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HardCharger



Member Since: 03 Mar 2013
Location: Manila, SFO, Amsterdam
Posts: 676
2011 Defender 110 Puma 2.4 SW Stornoway Grey
In my case, we've cleaned it a few times now, still no bueno. It did work for a few weeks before packing it up though. That's why, even if it's new, we have determined that it's kaput.
Post #745097 11th Dec 2018 6:11am
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