One of the members on here buys unloved P38s and depending on the condition, either refurbs them and sells them on or breaks them for spares (using some parts on the ones that need refurbing). One thing he always looks for on a breaker is whether it still has the original cats on it as he can weigh them in for £300 each. Cats don't normally clog up on a car that is running properly, it's only one that is running badly that will clog them.

With the MAF disconnected it will start and idle but won't rev unless you constantly pump the throttle and you can get the revs up eventually as you have found. The GEMS SID simply says that pin 36 on C507 is sensor common but not what voltage it should have on it and as well as the MAF it is also common to the fuel temperature sensor, intake air temperature sensor, cam position sensor and throttle position sensor.

I had always assumed there would be a 5V reference voltage somewhere so, in the interests of curiosity, I've just checked mine. As I run a single point LPG system, I have a stand-alone fuel system that doesn't need a MAF (or most of the other sensors for that matter). Started her up on LPG, disconnected the plug to the MAF and checked the voltage on the Red/Black wire. Result was 0.04V with respect to battery negative so ground to all intents and purposes. After switching off and reconnecting everything I thought that maybe I should have checked with the ignition on but engine not running but I can try that if you think it might be a benefit. It might be worth checking the voltage on the other sensors to see if there is damage to the loom? When you changed the engine did the replacement come with the loom on it so it was just a case of plugging it in or did you swap the loom over? Did you remember to connect the main engine ground down underneath the alternator?

The guts of the cat are ceramic so if they start to break up the bits get blown out so would normally end up inside the middle silencer box. As you don't have one, they are probably just laying in the delete pipe. OE cats are ridiculously expensive but aftermarket, which are much smaller but still work well enough to go through the emissions test at MoT time, are quite reasonable. You need to get the correct one as the boss for the lambda sensors is a different size between GEMS and Thor, so up to 98, you want ESR4095 but 99 onwards you want WCD105350. Only difficulty is getting the crossmember out to fit them.

There's also two different versions of the Gen2 if you look at the internals but the performance is very similar in as much as they pass whatever is received through to the BeCM whether it is a legitimate code or not.

Most likely is a rattle from the innards of one of the cats. If it is, you have two options, replace it, or the cheap option, clamp a lump of steel against the side of it so it squeezes it in and holds the internals in one place.

As for the video, it will depend on what settings you used when shooting it. If you've shot it in full 1080p HD, you'll get a big file so will take a long time to upload. If you change the settings to 720p the files will be much smaller. Or just upload to Youtube and link to it there.

It isn't a replacement receiver, it's a filter that plugs into your existing receiver and updates the earlier ones to Gen3 performance. Gen1 was barn door wide so would respond to any transmission between 420 and 440MHz so would keep waking up the BeCM and causing your battery to go flat. Gen2 is a lot better but would still respond to a signal on 433MHz and wake the BeCM but not unlock the car. Gen3 checks for a valid code before waking the BeCM so preventing battery drain problems, the filter does the same, blocking anything that isn't a valid P38 lock or unlock code.

I've had a look at a Gen3 that wasn't working and, as a test to confirm it was the receiver, I pulled the one out of my car to try that and it worked perfectly so the owner just got a used Gen2 to fit instead. The Gen3 looked fine and I ended up sending it to Marty so he could have a play with it and it was him that said he'd found a few others that had failed with no immediate signs of anything burnt.

So the bottom line is, you still need a working receiver. I've got a Gen2 (blue spot) with one of Marty's filters (a prototype one he let me have to try and see if I could break it) on mine while he Ascot has a Gen2 without a filter. On that one the BeCM will be woken up every time either my car or the other half's SLK are locked or unlocked as it will respond to the signals from their fobs but it still takes about 4-5 weeks for the battery to go flat.

Probably because I am using Google.co.uk so find local hits rather that you being forced to use a local search. I have the same problem when I am out of the UK finding stuff as Google always tries to give me local results.

I suspect Eurospares do much the same as Britpart and buy them in from other suppliers, maybe even OE. Given the choice of multiple suppliers I tend to go for the mid range ones, not genuine (as you seem to pay a 200% premium for LR packaging), not the cheapies as they are likely to be Chinese make knock offs so by going for the middle you are likely to get something decent. I've bought some Eurospares stuff and not had a problem but not height sensors I will admit.

For the fronts, Island 4x4 have either Eurospares https://www.island-4x4.co.uk/front-height-sensor-9702-anr4686g-p-336.html or Dunlop https://www.island-4x4.co.uk/front-height-sensor-9702-dunlop-anr4686-p-42133.html, both shown as in stock. They also have Eurospares rears, https://www.island-4x4.co.uk/rear-height-sensor-9702-eurospares-anr4687-anr4687es-p-42183.html but no Dunlop or OE while Craddocks are showing low stock https://www.johncraddockltd.co.uk/anr4687-genuine-p38-rear-suspension-height-sensor-from-va345920.html.

You mean you broke down on my doorstep? I'm in Stilton, just off J16 of the A1(M), one junction down from the services. To properly check UJs you need to disconnect them or at least have a wheel on each axle off the ground. Rear radius arm bushes are dead easy to change, the front ones involve a big press and lots of swearing at them. CV joints make the usual CV joint clunk, clunk, clunk on full lock, but stay quiet when straight ahead so it doesn't sound like a CV joint.

Is it a continuous clunk or just as you change from accelerating to decelerating? If it is just with a change of load, it could be a propshaft UJ on its way out.

If the alarm has been triggered the immobiliser will also be set. The jumper will allow you to turn the engine over on the starter but if the car is immobilised the BeCM won't have sent to correct code to the ECM so you'll have no sparks or fuel injectors turned on unless your ECM has been modified for free running as Bolt has said. The big clue on a GEMS is if the Check Engine light comes on with the ignition. If it does the ECM has received a valid code, if it doesn't, it hasn't.

If the CDL switch had died it is possible that it wouldn't cause the other door to unlock. But, if the CDL switch had died you wouldn't be able to enter the EKA as that uses the CDL switch to tell the BeCM which way you are turning the key.

If it needs the EKA putting in, it will only unlock the drivers door. Once the EKA is in and accepted, then they should all unlock.

Like I say, there is a tiny surface mount 5V regulator in the upgraded receiver which has been known to fail. I know Marty has repaired a few of them. Do you have an earlier one you can put in to try?

You were turning the key in the lock while pressing and holding the fob buttons? You need to turn to lock and hold there while you press the lock button, return to centre, then turn to unlock, hold there, and press and hold the unlock button. If you can successfully enter the EKA then the latch microswitches are fine so that isn't your problem.

The upgraded receivers have been known to fail though.

Elements can be repaired, it's almost always the one in the base that breaks as people will insist on sitting on it. Repair isn't difficult but very fiddly, see https://web.archive.org/web/20180513085246/http://www.rangerovers.net/repairdetails/seats/seatheat4.html

Got partway through reading and was about to say the other way of lifting it with the Nano is to go into the outputs, open the valves, then on the next page, open the inlet valve. Doing it that way doesn't matter if the doors are open or not or if he engine is running or not.

As for the starter, I bought a used one for mine, fitted that, then took the original into a local auto electricians who fitted new contacts in the solenoid and brushes in the starter.

Sorry Clive, for once I have to totally disagree with you. Having a dead P38 HK DSP amp here the output stages are TDA8563Q Class-B amps. The output from the head unit is analogue at around 2.5V p-p so higher than normal line level (1V p-p) but lower than speaker level but only with two channels, left and right, the fade between front and rear is done by the amp. There is a data line from the head unit that controls the balance, fade, bass, sub level and treble. I will admit that the P38 amp is pretty basic compared with modern systems with just the presets for Spacial and Driver but it was designed when DSP was in its infancy.

In contrast, the Kenwood head unit I have in my car is pretty damn good. I know the theory of how it works but still can't get my head around how it actually achieves it. As well as a number of presets (Natural, Pop, Rock, Easy, Top 40, Jazz and Powerful) it also has full manual control of the 9 band graphic (which it took a mate, a retired sound engineer, the entire journey to the Dutch/German border to get how it should sound) which can be different for each source, as well as settings to tailor the sound for different types of car, different sized speakers, different speaker placings and a setting that allows the sound stage to be moved. So even though the speakers are low down in the doors, it can make them sound as though they are at ear level. With all the different settings, you now know why I never disconnect the battery on my car! I've changed the original door speakers for JBL Stage 600 CE units (straight swap) and also have a Pioneer powered underseat sub on top of the BeCM under the drivers seats. Listening at an 'adequate' volume, it sounds extremely good but can't hold a candle to something like the Meridian system in a L322 or later, or the Bose systems in a high line Audi or Bentley.

Marty did a replacement for the DSP amp using 4 door amps from a previous generation P38 as they were matched to the level and impedance coming from the standard head unit. Unfortunately to fit it involves sitting in the boot soldering and heat shrinking something like 40 wires. I've got the dead DSP amp, a pair of 50W Class D stereo modules, and four 2 way crossovers with the intention of building them into the original DSP amp box to make a plug and play replacement. The only additional wiring needed would be the two rear speaker outputs from the head unit. These are still there as they were used on the earlier door amp equipped cars but with no wiring in the loom to the DSP amp. However, it is one of those things that I went through how it could be done theoretically and bought the bits but never actually put them together as I don't have a car with the DSP system to try it in.

and still is. You won't find a system in a car that doesn't have it these days.

Do you have the DSP option under the tone button? If you do, it will be the amp almost certainly. New they are horrendously expensive and used is always a gamble as to how much life they have left in them. The DSP chip is sealed to the circuit board with some sort of resin and the general consensus is that the resin has a different coefficient of expansion than the chip and board so the stress of multiple hot cold cycles over the years causes the chip pins to come away from the board. Unfortunately nobody has yet succeeded in getting the resin off without destroying the chip.

A 2001 may well have the dreaded DSP amp in the boot which are known for dying without warning. Often temperature related when they initially fail so it might just start to work when it gets warmer (or colder). Is this in all modes or just when streaming?

Yes it is, you have to put resistors in parallel with them to draw the extra current. Only downside is if the light stops working due to an iffy bulbholder, the current is still being drawn by the resistor so you don't get a bulb blown warning. Some of the LED bulbs sold as being Canbus compatible have the resistor built in so they will still work.