p38 4.6 eas problems

hi all just about had enough i`ve retro fitted eas to my 97 p38 4.6 but i cannot get the pump to run automatically i`ve checked the thermo switch even replaced it changed relay changed ecu but no joy it will run with reset tool & by bridging relay terminals there are no faults showing & yes the doors are all closed ive fitted a new pressure valve today & changed pump still no joy please can anyone help?

gregyzfr1 said:

hi all just about had enough i`ve retro fitted eas to my 97 p38 4.6 but i cannot get the pump to run automatically i`ve checked the thermo switch even replaced it changed relay changed ecu but no joy it will run with reset tool & by bridging relay terminals there are no faults showing & yes the doors are all closed ive fitted a new pressure valve today & changed pump still no joy please can anyone help?

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Driver pack in valve block??

The compressor will not run unless the engine is running. You do have the engine running i take it?

kevwill said:

Driver pack in valve block??

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Driver pack has nothing to do with compressor.

Hi are you using the RSW software to controll the EAS system, does this not throw any faults up at all??

Are the switches on the dash lighting up and showing anything at all??

Were allt he cables and connectors ok when you refitted everything??

When controlling it externally, is the vehicle lifting and going through the different heights/ staying level??

hi all yes engine is running suspension works perfectly on switches stays at correct heights but will not run compressor automatically there are no faults on rsw software

Sorry im confused, the pump runs and the suspension raisesd using the rocker switch in the cab?? You can select the different heights etc. An the vehicle stays level?

So when else should the pump be running? It shouldnt run that often if the system is good and sealed, apart from to top the tank up when needed...

And you have good idle on the RSW software....

the pump will only run if i use rsw software or bridge relay terminals there is good idle on software too

gregyzfr1 said:

the pump will only run if i use rsw software or bridge relay terminals there is good idle on software too

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Is the dash switch recieving power/ connected up correctly or at all??

Is the switch ok??

Have you checked relay 20 for function?

the dash switch is connected & lit i have tried another one it all seems to work as it should just no compressor i originaly bought my rangey on springs & recently bought another on air for spares so i changed everything over the only things missing on mine were the air bags & pump but over the last 2 weeks ive been swapping everything trying to resolve this then i bought another pump form a range rover breakers to try still the same problem

ive swapped relay 20 for a known good one if i remove relay bridge terminals to run pump suspension will go to max height when i replace relay it drops to correct level

gregyzfr1 said:

ive swapped relay 20 for a known good one if i remove relay bridge terminals to run pump suspension will go to max height when i replace relay it drops to correct level

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Running compressor with software cuts out use of pressure switch and temp sensor. If car goes to high setting you maybe putting too much pressure in the tank and it is overcoming the valves. Empty the tank disconnect EASunlock properly and see if compressor starts up then.

thanks but i tried that yesterday too completley drained system still no compressor i would just live with this but i tow a 3 ton compressor & after 10 miles she throws a fault & sits on the bump stops

Is the EAS ecu known good??

Because from what ive read here its the only bit left that would have any control over the EAS pump..

i have a choice of 2 lol & tried both still the same

gregyzfr1 said:

i have a choice of 2 lol & tried both still the same

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Gotta admit im stumped then mate, do you have a proper diagnostic??
Might be worth a shot,

Failing that check all your fuses and relays.
Double check the sensors are working
Check the power signals coming out of the ECU's when it should be requesting.

thanks all for your help looks like a trip to a specialist if that doesnt cure it then it back to crappy springs hey ho

gregyzfr1 said:

thanks all for your help looks like a trip to a specialist if that doesnt cure it then it back to crappy springs hey ho

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Dont give up, its gunna be something daft no doubt.

Take a step back an start again. Sanity check the connections. Maybe see about any corrosion on the connectors...

Best thing will be a proper diagnostic plugged in. See if anyone around you has one on here..