 | Home > Td5 > Rediculous loss of power when cold - Help please |
 
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| Kev stephenson Member Since: 27 Feb 2012 Location: Huddersfield Posts: 56   
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Quick update,
Took the defender to Gary at the Driffield show after a discussion with him on the phone last week. He said he wanted to see it as he didn't want to sell me anything I didn't need and as i was going anyway to take it there. He broke off from dealing with his other customers to run a scan on mine which was showing air flow readings of approximately half the expected values. He had another AFM with him, fitted it for me (readings now correct), checked numerous other things including the map, made a couple of recommendations and all for the cost of the parts (at show prices as well!!). Outstanding service, a big Thank You to Gary at Alive. I will be back. Kevin 2005 110 TD5 XS running Alive Stage 1 and a bit and other toys 1996 130 300TDi chip truck for tree surgery business |
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12th May 2012 8:03pm |
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| tolley Member Since: 07 Nov 2011 Location: gloucester Posts: 1114 
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a bit off line but would it cause lack of power when warm ,dirt on the maf sensor ?
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14th Jul 2012 8:13pm |
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| changill Member Since: 13 Dec 2008 Location: North West - Preston/Lancaster Posts: 27 
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Yep.
MAF sensor problems can cause loss of power at all ranges, but is more noticeable when cold. You don't often notice MAF isssues at high revs as the MAF degrades gradually. Chan Only Alcohol Can Save me Now Nanocom Available in the North West |
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29th Jul 2012 9:01am |
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| Brucey Member Since: 18 Jul 2012 Location: Warsaw, Poland Posts: 61  
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Just out of curiosity, what should the MAF readings be? say tickover and 2500 rpm?
I have never had to touch my engine and I am not sure if I would have noticed any degradations over time. The comment above of revs freely to 4000 rpm would give me a heart attack and I have hardly ever seen rpm over 3000! Defender 110 DC converted Auto BMW R1200GS BMW F650GS Dakar |
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21st Aug 2012 11:52am |
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| changill Member Since: 13 Dec 2008 Location: North West - Preston/Lancaster Posts: 27
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It should read about 50 to 60 Kg/Hr at idle and between 500 to 550 Kg/Hr at 3000rpm. Never seen it but apparently Max value for Air Flow is 700 kg/hr.
It can be affected by engine operating temp etc and climate control operation. The problem with the MAF is that you don't normally get a fail (error) code. Just a gradual drop off in performance. Chan Only Alcohol Can Save me Now Nanocom Available in the North West |
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21st Aug 2012 12:41pm |
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| Brucey Member Since: 18 Jul 2012 Location: Warsaw, Poland Posts: 61
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Great, thanks for the information.
Chris  Defender 110 DC converted Auto
BMW R1200GS BMW F650GS Dakar |
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21st Aug 2012 12:54pm |
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