95 Range Rover EAS problem

Coils will sort it, but you would miss the air system too much i fear. Sounds like a sensor malfunction to me. Might be worth getting the fault codes & starting from there.

Nige

Possibly height sensors, although normally if they are faulty the EAS ECU has a fit and give you an EAS Fault message. Could be sticking valves in the block which are stopping it from coming down, but I'm not sure why operating the button on the dash wouldn't at least make an attempt at doing something!

Best bet is probably to get it along to a specialist who can hook it up to the diagnostics computer to see what is causing the problem as they can read the output of height sensors etc.

I wouldn't jump into replacing with springs - the EAS is great and most of it can be fixed pretty cheaply now.

Matt

The message from "David Dunn" contains these words:

probably a relay, no idea where these are on a p38 but if light on the switches is on all the time then you get positive feedback when main relay dead. the ecu thinks you are sending it a message when you are not. I seem to remember there are 3 or 4 which used to be under drivers seat in RHD classics but I think they got moved to behind dash panel or side foot panel.

I changed the relay in the fuse compartment next to the battery under the hood abut with the same result. I removed the suspension high control unit (under driver seat) and found mud trapped inside the unit. I found there are few connector pins shorted together because of the copper migration/rust (mud and water trapped insie the connector). After cleaned up I did the resistant measurement and found there are funny reading on some pins. The resistant keep changing and looks like I am charging a capacity. By checking the pin assignment from the RR electrical diagram I found the left hand side high sensor input (front and real) had 43k ohm reading but the right hand side high sensor input pin resistant is keep changing and the other right hand side high sensor input had 2.7k ohm reading. Is that mean my suspension high control unit malfunction? As I mentioned earlier, my RR right hand side does higher than left hand side by 1.5" to 2". Will air-suspension delay timer will cause my EAS problem too?

...and David Dunn spake unto the tribes of Usenet, saying...

Mud in electronics, corrosion, inconsistent readings, fault persists - I think you've found your answer.

Hi David,

I have been having fun with my P38 EAS like you. I have changed all four airsprings last month (leaking) and just this weekend rebuilt my totally worn out compressor. Yours sounds like bad connections somewhere, maybe the connectors under the car to the height sensors need attention. How did mud and water get into the EAS ECU?? Take a look at

Well, my son had too much fun on the off-road driving adventure. He did not know how the mud got into the ECU either.