P38 Air Suspension Not Starting Up

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Radar1946

Radar1946

Active Member
Posts
362
Location
Lichfield, Staffordshire
Fitted a reconditioned valve block today and the compressor will not start up. I have tested it and it works fine. Everything worked fine until I fitted a recon valve block. Any Ideas.?.
 
Hey, check your plugs are positively plugged together.
Do you have another pump to try incase your existing one has died coincidentally?:eek:
If you have an electric meter/tester you could check for a voltage supply when the pump should be operating?
 
Radar1946 said:
Fitted a reconditioned valve block today and the compressor will not start up. I have tested it and it works fine. Everything worked fine until I fitted a recon valve block. Any Ideas.?.
Click to expand...

Compressor has little to do with valve block. Only thing on valve block that effects compressor operation is pressure switch. How did you run compressor?
 
wammers said:
What difference would that make to compressor running????
Click to expand...
Clearly none (or you wouldn't be pulling me up on it, now would you?). :D
I assumed that as the EAS operations were inhibited by tailgate etc. it would also mean it would not bother with the compressor either.
 
DanClarke said:
Clearly none (or you wouldn't be pulling me up on it, now would you?). :D
I assumed that as the EAS operations were inhibited by tailgate etc. it would also mean it would not bother with the compressor either.
Click to expand...

EAS operations are, no height changes will be made with a door open. But the air storage system has nothing to do with that. It's a completely independent circuit.
 
I have a Lynx diagnostics unit, and I can force the compressor to start, but it only lasts for a few seconds, then stops.
There are no faults showing. All doors and tailgate are shut when testing. What is this I read somewhere about it could be locked?
 
Radar1946 said:
I have a Lynx diagnostics unit, and I can force the compressor to start, but it only lasts for a few seconds, then stops.
There are no faults showing. All doors and tailgate are shut when testing. What is this I read somewhere about it could be locked?
Click to expand...
Anything on the dash message centre without the diagnostics plugged in? If you have the "Slow 35 mph" message the EAS has a hard fault which will need to be reset.
The engine needs to be running for the compressor to run.
 
Radar1946 said:
I have a Lynx diagnostics unit, and I can force the compressor to start, but it only lasts for a few seconds, then stops.
There are no faults showing. All doors and tailgate are shut when testing. What is this I read somewhere about it could be locked?
Click to expand...

In what sense locked? Other than as Keith says it can't be locked and that would not stop the compressor being run by diag. Be careful what you read on line most people who spout about EAS don't know their arse from their elbow. Look at tech archive and follow my directions for checking things out.
 
Just tried without diagnostics plugged in. The first time I switched the ignition on it said "Slow 35 mph".
Then on more tries it did not mention 35mph just the orange light with the arrow underneath.
The lights on the height switch work when I try a different height, the lowest stays on but the third one up
just keeps flashing.
 
Radar1946 said:
Just tried without diagnostics plugged in. The first time I switched the ignition on it said "Slow 35 mph".
Then on more tries it did not mention 35mph just the orange light with the arrow underneath.
The lights on the height switch work when I try a different height, the lowest stays on but the third one up
just keeps flashing.
Click to expand...

That means you have no air pressure. Check the compressor out as said in last post. And pressure sensor wiring to plug.
 
The compressor is relatively new, and will run if forced by lynx. It seems that something is stopping the compressor
switching on. I will go and check it in the car. Which two coloured wires do I c?onnect
 
Radar1946 said:
The compressor is relatively new, and will run if forced by lynx. It seems that something is stopping the compressor
switching on. I will go and check it in the car. Which two coloured wires do I c?onnect
Click to expand...

Thermal switch?

If it runs on diagnostics or bridging the wires but not on the car I'd say thermal switch. If you bridge the wrong wires testing it you will fry the thermal switch.
 
You must log in or register to reply here.

Similar threads

ar1g3
P38A Which EAS repair kit to get?
Replies
18
Views
1K
Grrrrrr
Grrrrrr
A
Sport Air suspension driving me mad
Replies
11
Views
1K
aco
A
B
P38A 1996 4.6 Auto HSE. driver side bags not inflating after valve block rebuild.
Replies
17
Views
1K
nigelbb
N
stuu
P38A Brands advice/suggestions
Replies
4
Views
648
stuu
stuu
M
no start no crank after button pressed
Replies
10
Views
625
mrmotorvator
M
Back
Top