P38 air suspension help

welshbloke · Mar 5, 2012

Hi there

im refitting EAS to my P38, and cant find the rear height sensor mounts, can someone please post pic/many pics of what they look like/where they are? ive found two small lumps on the chassis where i think they should be and no brackets! im under the impression they've been cut off when the coiler conversion went on.
Thanks in advance!

Phill.

dougdotcom · Mar 5, 2012

hope this show up ok. :

welshbloke · Mar 5, 2012

hi, thanks for the reply!
its certainly helped, as id no idea what these brackety things look like.
from that diagram i think it looks like a 'C' sorta shape, with the two arms being welded to the chassis? does that sound about right?
i should have said before that my model is a 1995.
the new sensors i bought came with adapter brackets to attach to the brackets i don't have on the car to enable it to use the newer sensors. as you can imagine, with the brackets on the car missing, its caused an awful lot of head scratching!
am i best trying to find someone breaking an early P38 and seeing if they'll chop a pair off for me to weld on? im more than willing to pay, can anyone help?

gog · Mar 6, 2012

Were abouts are you ,maybe I could call over so you can have a good look at
what's on mine.

welshbloke · Mar 6, 2012

hi, Mold, not really just along the road im afraid

ive emailed a few peeps on ebay breaking p38's to see if they'll supply me with said brackets. just have to wait and see i guess.
if anyone on here has an early p38 they're breaking please get in touch!

edit:

found this pic at last! http://i295.photobucket.com/albums/mm134/earnan/IMG_0384.jpg
and http://i295.photobucket.com/albums/mm134/earnan/IMG_0368.jpg

kds · Mar 7, 2012

changed right rear eas sensor not long ago on my 2000 m/y and second picture looks to be same mounting bracket as mine, I know the connector is diferent between early and late models but thought mounting was same.

fix it · Mar 7, 2012

theres a guy on anglesey who brakes p38 for a living pm me if you want his number

welshbloke · Mar 7, 2012

just had a reply from one of the ebay peeps. £70.....a bit much i think for 2 bits of metal.

rewmer · Mar 7, 2012

Good work re-fitting the EAS. Most refreshing.

welshbloke · Apr 10, 2012

Time for an update!

Firstly many thanks everyone who sent me a pm with names and numbers to ring. after a few calls and ebay messages from some ahem, really helpfull types, i decided to fabricate my own brackets. guessing the dimensions and extrapolating pictures i did have of sensors. welded to the car and fitted the sensors up.
ill try and explain this simply.....because what im asking about isnt simple!

The scenario:-
The following values are imaginary!

For a given height (lets pretend its 'standard' in this instance), the eas ecu expects a value between say, 60 - 90.
You measure up the height and read the sensors value, and its 50.
You put this value into the eas ecu, under the 'standard' height profile.
Its however expecting a value between 60 - 90.
If you're outside of this, would it throw a fault and not accept re-calibration as its out of limits?
I take it these would be the sensor tolerance values.

The question:-

Can TestBook erase and write new sensor tolerance values?
or do i have to re-drill/re-make the brackets again, to bring the sensors closer to the pre programmed tolerance levels?

If it can re-program the values, does anyone have TestBook on here?

welshbloke · Apr 10, 2012

Another update!
Sorted it.
Took a slightly different route, ive re-calibrated but its all set slightly higher than factory spec.

Took largest differential of sensor figure vs minimum tolerance value and added that to the sensor figure. Measured that height, then set all other corners to same height.
Took sensor readings and wrote those to eas memory.
Rinse and repeat for all other height settings.

e.g in this example the RR sensor has the largest deficit.
RR sensor = 60,
absolute min rr sensor can be = 70
so 70-60 = 10.
Therefore add 12 to sensor figure. (the extra 2 is for padding, just incase).
Measure height of RR side. Make a note of it.
Raise/lower other corners to same height.
Keep checking RR after each adjustment.
Read all sensor figures, ensuring they are all above minimum tolerance level. Make a note of them.
Input sensor readings to EAS ECU.
Repeat for other heights.

and i finally have working EAS instead of a cop-out coiler conversion

Thanks to those that helped, and thanks also for reading my witterings

This is not a task id ever like to do again

Datatek · Apr 11, 2012

welshbloke said:
Another update!

This is not a task id ever like to do again

But you will, you will

stopover · Apr 11, 2012

Sounds like you have done a great job and its nice to see a Rangie returned to air ride again, am shure you will enjoy the car even more now. I have TestBook T4 and have changed lots of height sensors. The way I do it is to note the existing readings and with the live feed running match the original for the car as the sensors bracket allows some movement ie get the original reading and nip the bolt. There was a post years ago with the dimensions (I hope they were accurate) to replicate the height 'setting blocks' that Land Rover have as a special tool to use with TestBook. I had a local firm make me a replica set but I have never used them as there has been no request to do a full recalibration. I understand there are risks in doing a full recallibration with TestBook and would be most interested in hearing from someone who has experience in doing this?

To achieve the settings you put in you must be using some sort of software, interested in what system you are using.

Best of Luck with your now ongoing project, what P38s are!

P38 air suspension help

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