maybe post your query in the hippo forum
here:
https://www.landyzone.co.uk/forum/land-rover-freelander.9/
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i suspect the maf is now screwed ..
won't be the first time a maf cleaning has had the opposite effect to the one desired
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you could disconnect the maf n see if it runs any better ..
( that will cause the ecu to use its default maf map )
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lack of power with the engine light comes on after passing 2500 - 3000 rpm.
often caused by a failing low-pressure-fuel pump / or blocked fuel filter
( the maf sensor has more effect below 2500 rpm )
be other reasons that can cause that power issue + engine warning light
( affaik the maf sensor does not cause the e.warning light to come on )
be some info about td4 issues in sig links at the end of this post
( the downloadable .pdf files )
go post in the freelander section ..
'n try a forum search .. be loads of tech info to hand
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