4.6 2001 maf?

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mark1971

Active Member
Posts
456
Location
walsall..west midlands
Rite then me LZ wizards
My 2001 4.6 running lumpy on tickover (No lpg fitted) and heavy on fuel, power is also affected! seems a bit hit and miss power wise!
I've got the following code,
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I'm thinking oxygen sensor or maf? Can Any of you more knowledgeable chaps confirm which it is or tell me what to look for on nanocom to confirm? Also could this purge valve I've been reading about be a culprit? I filled up weeks ago and the pressure that released out the cap seemed very bloody excessive! it's not done it again since, just usual hiss or nothing! But other week went with a rite whooooosh!
Ta very much
 
Look for a maf reading of 22kg hr on tickover with all loads off. The o2 sensors should switch between 0v and .8 every second or so on idle when warm.
 
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Look for a maf reading of 22kg hr on tickover with all loads off. The o2 sensors should switch between 0v and .8 every second or so on idle when warm.
Cheers rewmer
This is what I'm showing..
 

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