Air suspension pump testing.

[cactus]

Hi, My Soft-Dash hit the deck yesterday! :(

Guess it didn't fancy the trip to the Sort-Out today! :shock:

Wish it had gone last week as was in Hillsborough

visiting the out-laws....

I'm in Essex too so, following with interest.....

P.S. Gotta spare Multi-meter if you need one Dave..

Cheers Barry :D

[DAVE39V8]

Right, if you found a 30 amp fuse under the seat then keeping it company are a large relay that gives the EAS a 30 second delay to self-level after turning off the ignition, a 5 pin relay that runs the warning light on the dash and a 4 pin relay that runs the pump itself :)

THis relay needs checking, even if it's just to see what's going on.

The pressure switch is if I understand correctly open circuit untill the pressure reaches 10 bar nominal, it stays that way 'till the pressure drops to 8 bar.
So if you disconnect it the pump should run.  Sounds wrong to me as there is no failsafe in that logic, but that's the way I read things from the manual.

The temp switch is better, it goes open circuit when the pump clears 120 degrees (ouch) and it goes to earth, so you need to check the continuety of the red wire on the motor to earth, if the contact is broken the pump won't run, so try shorting the red wire to earth.

If you are still struggling then I have found the pinout of the ECU for you, you will have to check through it in order to check what's going on.  You can also use it to manually inflate the EAS if you can get the pump to run.

Yeah I saw the relays and a 15amp fuse(which was ok)today.
Will check out the relay soon.

So if I just earth out the red temp wire then it should run the pump providing nothing else wrong :?:

I will send you an easter egg for all this help  :)

[DAVE39V8]

Hi, My Soft-Dash hit the deck yesterday! :(

Guess it didn't fancy the trip to the Sort-Out today! :shock:

Wish it had gone last week as was in Hillsborough

visiting the out-laws....

I'm in Essex too so, following with interest.....

P.S. Gotta spare Multi-meter if you need one Dave..

Cheers Barry :D

Hi Barry i'm interested in the multi meter..

How much would you like for it :?:

Thanks for the offer

Dave

[Range Rover Blues]

Yeah I saw the relays and a 15amp fuse(which was ok)today.
Will check out the relay soon.

So if I just earth out the red temp wire then it should run the pump providing nothing else wrong :?:

I will send you an easter egg for all this help  :)

Yes, if it's the temp switch that is fried then short it to earth and the EAS should run the pump, assuming the temp switch is faulty.  You can check it when you get your loverly new meter :D

[DAVE39V8]

Range Rover Blues you are a diamond..I earthed out the red/orange wire and its back to life... :D  :D  :D  :D  :D  :D  :D  :D

Can it be left like that indefinately :?:  :?:

I have noticed the compressor vibration through the car more than before but I put this down to the change of compressor and the rubbers (and maybe overtightened the fixing bolts).. :!:  :!:

So PM me your address and I will send you that easter egg  :)

[Range Rover Blues]

The ECU does have some programming to protect the pump from overheating but I wouldn't suggest leaving it like that indefinitely.

Do you have the old pump? if so check the switch on that one, they can be swapped around (let's face it the old pump might have been ok?).

Top Tip, if you are stripping the pump assembly remembere that the housings are alumium, so if you heat them up it's easier to drive the bearings out, I stuck mine in hot water

[DAVE39V8]

The old pump does work when connected to battery so like you say it might be ok..
Would it be easier just putting that pump back on and trying it:?:

[Range Rover Blues]

Yes quite frankly it would.

Carefully remove the 4 bolts in the top of the pump housing and have a look inside (if they won't budge leave them) at the state of the Teflon seal ring.  If it's paper thin don't waste your time but if there is plenty left and you can feel pressure build up when you run the pump from the battery then it's a go-er.  Tip, twist the housing as you lift it off to unstick the pump barrel inside form the head, thsi will save you having to re-fit the barrel.  Not sure what I mean? ask first

If you don't want the other pump chuck it my way

[DAVE39V8]

Ok thanks again I will give the old pump a try again first and let you know how I get on


I dont fancy stripping it down the way my luck goes :oops:

[Range Rover Blues]

Then just check it's building up pressure against you finger and if it does put it back on, just don't want you to spend all that time only to have it let go on you.

[DAVE39V8]

Just checked my original compressor and i'm happy with the pressure it put out so I will swap it back soon :)  

[Range Rover Blues]

Glad you got sorted Dave and thanks for the easter egg

Cactus, did you get sorted yet?

[DAVE39V8]

No problem mate. You helped me out big time..Glad you liked egg..Hope it were in one piece and not one lump  :)  

[Range Rover Blues]

Oh yes, arrived safe and sound thanks.  It's still in the fridge, came in quite handy as neither of us remembered to buy one this year :oops:

[DAVE39V8]

:lol:  :lol:  :lol:  :)