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flat spot pulling away

Discussion in 'Land Rover Freelander' started by redwood, May 7, 2016.

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  1. redwood

    redwood Active Member

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    Is there a definite solution for this fault, most say it's the MAF, incidental it only happens when the engine is hot and no other symptoms or lack of power.
     
  2. andyfreelandy

    andyfreelandy Well-Known Member

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    Hi, I had this. Changed the MAF and same problem. I was convinced it was the MAF. I disconnected the MAF, drove it for a few miles, Reconnected and reset fault codes (air temp and air volume come up)
    . Then it was like teh ECU was looking at the new MAF. No further issues !!!! Not with the flat spot anyway !
     
  3. redwood

    redwood Active Member

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    So your £25 MAF cured the fault
     
  4. andyfreelandy

    andyfreelandy Well-Known Member

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    Original MAF had different fault, poor starting and lumpy running. Changed MAF for £25 one, had flat spot and smokey at 1750 ish RPM. Did reset thing and all well. So my £25 MAF seems fine although fault seems to have been the ECU not reading it.
     
  5. Nodge68

    Nodge68 Well-Known Member

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    Could you link this £25 MAF please, I'm feeling tight at the moment. Also what did you reset on the ECU. Did you reset the adaptive parameters?
     
  6. andyfreelandy

    andyfreelandy Well-Known Member

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    Link is
    http://www.ebay.co.uk/itm/271154766925?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

    What I did was run the engine with MAF disconnected to generate 2 fault codes (air temp and vol) then reconnected new MAF and reset fault codes. It may be worth Redwood trying this reset with his existing MAF to see if flat spot goes ??

    Anyone experienced this need to 'sort of reset' MAF ?? Mine is still smoke and flat spot free after 200 miles this weekend.
     
  7. Skinny Mike

    Skinny Mike Well-Known Member

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    Another thing to check is the EGR vacuum pipe. The EGR only activates when the engine has warmed up, the vac pipe tends to perish and sticks the valve open.
    Obviously if you have blanked the EGR, you can ignore this.
    Mike
     
  8. redwood

    redwood Active Member

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    Perhaps the disconnect and reconnect could have been a dirty connection. I think I might have a sticking EGR as it only happened on two days but yesterday and today it was fine, I'll keep you informed of my discovery although I won't be able to look at her for another week.
    Thanks for the replies and it's good to know that an Ebay £25 MAF works which is not surprising as Bosch has moved at least 15% of its works to Asian countries, probably parts slipping out of the back door and ending up on Ebay
     
  9. teddywood1

    teddywood1 Well-Known Member

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    also the vacuum pipe rubs on the gear box and you get a hole in it if you have this you will notice hard brakes as though it is not going to stop on a hill.
     
  10. redwood

    redwood Active Member

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    Thanks for the heads up Teddywood but All mine were change when I bought it and I have rechecked them
     
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