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  1. Oxygen Sensor Signal Stuck Rich

    Range Rover Sport II / L494
    All, my wife was driving our 2014 Range Rover Sport the other day and the amber check engine light came on. I plugged in my Innova Scan Tool and P2275 - O2 Sensor Signal Stuck Rich - Bank 1 Sensor 3 came up. At first I thought it was a loose gas cap so I twisted it till the clicks then cleared...
  2. 1988 runs RICH when hot

    Range Rover Classic
    First off let me thank you guys, you've been an unbelievable source of advice on my trucks over the years. I'm kind of stumped on this issue on my 88 and look forward to your feedback. 1988 with 110K. Truck starts up, although takes some time to finally kick over. Idles 95% perfect, slightest...
  3. Car running rich....

    Range Rover Mark II / P38
    Car is running rich (10MPG at 40mph UK gallons). Usually get 17-18mpg Bit of background. Recently done a full rebuild but the spark plugs when I stripped the engine were all dark and wet looking and smelt of petrol so I believe the problem was there before I stripped the engine. I remember...
  4. Too lean/Too Rich bank 1 codes...

    Range Rover Mark III / L322
    Hey, Recently started getting both P0171 and P0172 on my 06 SC. One indicates too lean bank 1, the other too rich bank 1. Not sure where to start. I changed bank 2 secondary o2 sensor in the winter because I was getting cat errors. It fixed the problem. Was thinking it's time to change the...
  5. very rich running

    Range Rover Classic
    Hello there, I've got a problem with my 3.5 EFI. It runs very very rich. Checked pressure regulator (membrane and pressure ok) And checked al parts except Airflow meter (flap) and ECU. The output voltage of the airflow meter is 3.67V when closed and 1.58 fully opened. is that OK? Is there a...
  6. 1999 Gems 4.6 Callaway runs rich and trans issue

    Range Rover Mark II / P38
    I am throwing codes: P1147 Purge Canister closure valve poor performance P0451 Eval Emissions System pressure sensor P0300 Random misfire P1316 Misfire causing excessive emissions. The rover is stalling and is getting crappy mileage. Additionally, the trans is not kicking down. (are they...
  7. 2000 4.6 on Tartarini LPG running rich.

    Range Rover Mark II / P38
    Hi folks, I have a recurring issue with over rich running, throwing various codes. Having worked through MAF, O2 sensors, etc., I can ascertain that it's the Tartarini Sequential LPG system that is causing the trigger. It's a relatively new phenomenon. It's been silky for 10 years. Have...
  8. P38 running super rich

    Range Rover Mark II / P38
    My 1999 Gems rovers high pressure fuel lines ruptured and I replaced them. The top of the sending unit was bad (nipples rusted)so I found a nice used unit with a eveidntly bad pump and swapped my pump into the clean sending housing. When put back together, the vehicle ran super rich (fuel...
  9. super rich

    Range Rover Classic
    My 89 3.5 L air flap EFI has started running super rich , blowing black smoke out . Checked the air flow meter(new reconditioned ) throttle sensor & both within specs . . Also checked cold start valve & OK . So what else can I check ? This does not have a...
  10. Running oh so rich!

    Range Rover Mark II / P38
    Hi team, new boy on the block here. I have been chasing a wee problem on my 98 4.6 RR. It is spitting out black unburnt fuel and smells of fuel. Scoffing gas as well on the trip computer it says 22.3 per 100km. When I first got it was around 16.6 around town and dialing down to 13 on a trip. The...
  11. running rich

    Range Rover Classic
    Hi finally got my 3.5 classic air flpap type injection system working after replacing injectors ,throttle poition sensor & air flow meter from a known running motor . But she is belching black smoke so far to rich . Now what do i do ? cheers
  12. LPG, 3.9 running rich on Leonardo AEB175

    Range Rover Classic
    Hi all, Any of you out there ever had a problem with your lpg systems running rich? I'll explain my situation. I've the 3.9 V8 running on petrol and lpg, petrol on start up and lpg as soon as possible after that, 30 seconds to a minute, as I don't enjoy revving it when it's stone cold. It...
  13. Does this code mean too lean or too rich?

    Range Rover Mark III / L322
    Hey everyone, I'm a bit confused with a code I'm getting with my Allcoms. I've got "Lambda control adaptation reached lower limit--Last occurence, maximum signal" for bank 1 and 2. I'm trying to understand if this means I'm running rich or running lean. I've found a few other posts regarding...
  14. Need Serious help - running rich to clunk on start

    Range Rover Mark II / P38
    There have been a few posts regarding running rich and I had been troubleshooting my 99 4.6 GEMS Callaway for the same issue. I thought I could give advice as many times as I have fixed my P38s but it appears I seriously need help myself now and may have somehow stuffed my engine. First I...
  15. Rich fuel mixture - how to check Motronic?

    Range Rover Mark II / P38
    Anyone comfortable with the workings of Motronic engine management? I have a '99 P38 with Bosch engine, special export model without oxygen sensors. The fuel consumption is beyond reasonable: 1 liter in 3 km (7 miles/ gallon). It has all the signs of a very rich fuel mixture: black smoke, two...
  16. Running Rich, Will not Start.

    Range Rover Classic
    1995 RRC SWB (3.9): Truck has been running very rich, can easily smell it, and gas mileage has gone from 14/15mpg to 9/10mpg around town. Truck will sometimes die at idle, choking itself out due to rich, then be very difficult to restart, requiring full throttle to allow more air and drilling...
  17. Can anyone help diagnose the following datalog file for the RR running rich?

    Range Rover Mark III / L322
    Can anyone help diagnose the following datalog file for the RR running rich? Tearing my hair out with this one. Since replacing the MAF, I just cant get it to stop coming up with the error of both banks running rich. I bought an after market new MAF, I've tested for intake leaks and...
  18. Help - new alternator, now idling rough, running rich

    Range Rover Classic
    I just installed a new alternator in my 1992 RRC and suddenly its idling really rough at starting, runs really well, then repeats the same after engine warms up and I come to a stop at a traffic light or something like that. Except that is not necessarily each time I stop, sometimes it stumbles...
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