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maf

  1. Run but not Running in Full..

    Range Rover Mark II / P38
    Hi Guys.. Im new here.. need advise (Like Others) from anybody willing to help.. i just had, 1996, 4.6 THOR, The engine, can start, and run, if i'm disconnect the MAF Sensor socket and it run, but likely miss fired.. but its Run..even the whole day..and when i put it back the MAF sensor socket...
  2. Yet another code 44

    Range Rover Classic
    Hi all, I'm new to the thread and to the world of Range Rovers, don't roast me too hard. I'm a long time Subaru owner and decided to make the jump to a 1994 RRC LWB. I bought it local, and it is my daily driver. It has been running fine for about 600 miles but just recently threw code 44. I have...
  3. Bosch MAF sensor

    Range Rover Mark II / P38
    I have been having some uneven running and lack of power issues. Checked my fault codes and after checking various posts on here concluded a good place to start was the MAF sensor. I was heading towards a Bosh genuine, again as a result of sage advice here, but was concerned at the cost. After...
  4. AFM / MAF Sensor issue

    Range Rover Classic
    Hi there After some adjustment to the timing, my engine runs great when the AFM/MAF is not hooked up. As soon as I plug it in it runs fine on idle but once in gear and driving it pops like a misfire and air/fuel mixture issue. The unit was showing 1.88v which is a bit higher than the target...
  5. Counterfeit Bosch MAF

    Range Rover Mark II / P38
    I have had my white 02 stored in the shed in Hawaii for the last 4 years. (warm and humid) Last November, I drove it quite a bit, but mostly 1/4 mile trips (moving stuff) When I then took it out on the road to town, I got SES light flashing. "Catalyst damaging misfire" according to the Nano...
  6. Maf question? Where are you guys getting them in the US?

    Range Rover Mark II / P38
    I got a cheapy one first ($60 bucks) knowing that was wrong. It ran worse with that than it did with the old no name one thats on it currently. Im a BMW fanatic and its the same for those, Bosch only. So I searched what brand is oem for these and came up with bosch. I orded a Bosch one and...
  7. 2004 TD6 Lacking in power when cold.

    Range Rover Mark III / L322
    Hi Guys can any one help? Td6 l322 range rover it's lacking power/limp mode when cold had no fault codes so went to maf disconnect it. runs like a dream so swapped it out but same with new one, unplug it runs fine but I now have fault for low side rail pressure. Smoked it for boost leaks...
  8. MAF Cleaning RR Sport V8 2014

    Range Rover Sport II / L494
    I have had recent "no start" issues with a Range Rover Sport 2014 (30,000klm). The mass air flows sensors were cleaned at RR service and the problem hasn't reappeared. I was wanting to be proactive and periodically clean the sensors with a MAF cleaner myself. The question I am asking is what...
  9. 4.2 supercharged maf readings

    Range Rover Sport / L320
    Hey guys. Since I've owned my 2007 rrs supercharged, I've always felt like it had slightly less power in higher revs than another one I test drove before buying this one. I now have an iid tool and can see that it has no fault codes. I've tried cleaning the maf sensor with the proper cleaning...
  10. thor rough running/poor power - new MAF fitted

    Range Rover Mark II / P38
    hi guys, i recently purchased a thor 4.6, which had suffered a head gasket failure (loose bolts, compression leakage under the exhaust manifold). the car came to me with the right head off. i rebuilt both heads and replaced the cam/lifters. during cam break in, it was clear it wasn't running...
  11. Maf

    Range Rover Mark II / P38
    I have a horrible feeling that my maf is dead. Tried cleaning but still not right. Runs but coughs and splutters, limited rpm. Stop it and unplug the mag she runs fine on her base settings, no symptoms at all. Now I will run a check tomorrow, but can't remember if I'm OK to run without it...
  12. System to lean code and HDC fualt. MAF sensor or ?

    Range Rover Mark III / L322
    Gotta a 2006 hse 4.4 jag and 135k replaced the alternator in it last weekend and after driving it around it got a new Engine light. System to lean bank1 and bank2. So my question is could this be from the software needing updated or just another sensor to replace?? any advice is always appreciated.
  13. Values for sensors MAF and O2

    Range Rover Mark III / L322
    2006 Range Rover L322 4.2 Supercharged (66K Miles) I have a GAP diagnostics blue tooth and wanted to check the values on my MAF and O2 sensors. Car runs good and no codes....but I smell rich mixture through exhaust. Is there a list of values I can cross reference my live data to and make sure...
  14. MAF or Vaccum Leak?

    Range Rover Sport / L320
    So I recently started throwing a check engine light. Pulled the codes and got: 0171, 0172, 0174, 0174 (rich bank 1/2 and lean bank 1/2) My car stalled out once when at super slow speeds (coming to a stop). I cleaned the MAF and it seemed to help but I still throw the occasional 0171 (only...
  15. MAF unit same for 4.0 and 4.6?

    Range Rover Mark II / P38
    The MAF hit on my year 2000 4.6 failed last week, the guy who services my LPG (who is a range rover nut) says that the unit for the 4.6 has a larger bore but the sensor is the same. Can anyone confirm if the 4.0 and 4.6 MAF for the later Bosch system is the same? The Manual gives no clue and it...
  16. P38 Dies if I Unplug the MAF

    Range Rover Mark II / P38
    Hi there, just curious if that is normal behavior that if I unplug the mass airflow sensor while the Rover is running that it completely shuts off, every time. I assumed it would probably run rough, but it completely dies. I noticed too that if I disconnect the air filter pipe at the plenum...
  17. P38 stumbles, no start (Long Story But Need Your Help)

    Range Rover Mark II / P38
    I had purchased the 1998 Range Rover 4.6 HSE 3 weeks prior and worked on cosmetic things and enjoyed a nice running vehicle. The truck was checked over by mechanic #1 to look for leaks and anything that might need attention (diagnostics I believe were taken). The week after, driving 1 day...
  18. Rewireing the MAF

    Range Rover Mark II / P38
    Having alot of problems with the MAF, I was wondering if there are any fuses i should know about between the maf and the ecm? It's a 4.6 thor.
  19. P38a cannot clear faults (No power)

    Range Rover Mark II / P38
    Bought my 4.6 thor Rangie 2 years ago, i believe it been standing for atleast 3 years and its engine was replaced.. Generic fault codes PO445,PO340,PO102 and p1669.. Its been to landrover and a private mech, with little improvement. The cam position sensor,MAf was replaced twice and the...
  20. erc9127 MAF Sensor

    Range Rover Classic
    Morning everyone So I have searched around and was wondering why is there no info on replacing the MAF on an 1989 Classic. More specifically I'm wondering what you guys pay for the part in that neck of the woods. I am looking at the above vehicle and have been quoted $1950 for the MAF. I...
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