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  1. Range Rover Mark II / P38
    Hello I own a P38 range rover 1995 GEMs I have a problem with the coil that continues to burn out, I have replaced it which was coil 2, 3 (far left from the front of the car) and I ran it for 8kms and it burnt out and stopped running both cylinders. This is the second time it has done it and...
  2. Range Rover Mark II / P38
    Hello boys and girls, I‘ve searched for any mention of this on here but I haven‘t found anything. If I‘ve missed it, I’m sorry! If I haven’t, hope this helps someone. I‘ve been frantically trying to find a way to properly reset the GEMS adaptive values without paying a shop or buying an...
  3. Range Rover Mark II / P38
    Hi All, I'm looking for additional suggestions as I continue to troubleshoot 1999 RR 4.0L GEMs - Blew a head gasket on the passenger side (edge of block at cyl5). After completing the rebuild the engine struggles to start, has a rough idle, stalls if you give it gas and let off the throttle...
  4. Range Rover Mark II / P38
    Hi have need of some help and advice.. the problem I am having is that when driving I get a stutter/missing on part throttle and when asking for a little power (exiting a junction) Have a code reader and have no codes or lights to give any insight as to what is wrong, the only thing that was...
  5. Range Rover Mark II / P38
    Gents, The intake pipe of the V8 GEMS has two "boxes" on it, I assume these are there to equalize pulses in the intake, please correct me if I'm wrong.. If I take these boxes of, does it increase throttle response? I thought I better ask before I do something I might regret later on ;)...
  6. Range Rover Mark II / P38
    Is it possible to fit a gems engine to a Thor vehicle bearing in mind I know I will have to swop a lot over including all sensors
  7. Range Rover Mark II / P38
    I have an Alpine White 1996 that I've been working on for a winter vehicle. I've noted that the seats were not nearly as comfortable as my 2000 H+H. Looked and there is a Rhino edition in the junk yard near me with complete interior, any reason why I wouldn't be able to switch the seats and...
  8. Range Rover Mark II / P38
    Good evening, i have two doubts about GEMS oil cooling system, hope somebody knows the answer. 1) which is the real task of oil cooler bypass spring valve fitted in timing cover?Is this valve really so sensible to detect oil density, so when oil is cold (thicker) the valve open bypassing oil...
  9. Range Rover Mark II / P38
    Today I took the car (122K miles on the clock) for a 40 mile round trip; Last sunday I did some work around the car and checked the fluids and all levels were OK except for the water that needed 1/2 pint to hit to the "cold" level which is what I have been adding once a year since I have the...
  10. Range Rover Mark II / P38
    This is a NAS spec 1996 4.6. Canisters and some other 'stuff' had already been removed. Hence they swapped the engine ECU for a normal one. The owner had already changed the sparkplugs and cables, replaced with Champion and Lucas as it should be. We received a P38 with horrible misfires...
  11. Range Rover Mark II / P38
    Heh guys, how simple/ otherwise, is it to replace the rocker cover gaskets on a GEMS? Is it possible to do it with the upper-manifold still on, or does that need to come off? Cheers
  12. Range Rover Mark II / P38
    My GEMS P38 has been having idle problems off and on. I let it sit fo 3 or 4 months and now it won't idle at all. Started to do some basic diagnosis - the nanocom says TPS voltage is only .02v. Basically 0. So I back probe the TPS connector, and realize it's not getting 5V at the connector...
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