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[chrisgixer]

Fuse 27, also runs the rear cig lighter.
Relay, one of the two small black ones at the top of the fuse box under steering wheel. Tother is high beam, so pull one, if the high beam still works, you know you have the sl relay in your hand.

[TheBoy]

Post 1998 Self Levelling ECUs are diagnosable. Thus provide live data into what it is trying to do.

Thats where to start.

[Lazydocker]

So... It pumps ok now with a new sensor but only enough to get the correct ride height... Pushing the sensor arm right up doesn't raise the suspension any more. Is it possible the pump is getting a bit asthmatic?

[TheBoy]

What does live data say about the sensor at various different heights?

[chrisgixer]

Tech 2 would not communicate with my 03 SL ecu.

[Lazydocker]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

[05omegav6]

Had written a nice long essay, but phone tinterweb has been playing silly buggers

But basically, my suggestions yesterday were about ruling out the blindingly obvious, but often overlooked things

Ps check the integrity of the loom by the plug to sensor. It might of got trapped or something daft, given the work done. I did notice the plug wasn't clipped up properly.

Not sure where the loom might have gotten trapped tbh. iirc, it enters the car beneath the rear seat base

[05omegav6]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

Did you prime the shocks when you fitted them, 1 Bar from an air line ottomh

[TheBoy]

Tech 2 would not communicate with my 03 SL ecu.

I know my old tech2 spoke to your ecu before, so whats changed?

[TheBoy]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

What do you mean, can't get to it? Your kit won't communicate with ECU? Thats not a good sign, and may indicate an ECU that isn't entirely functional?

TBH, with this system, without ECU diagnostics, you're pretty much pissing in the wind in a force 9, which GM learnt quite quickly, thus added functionality from 1998 onwards.

The donor ECU is post 1998, isn't it?

Failing all that, I'd remove the levelling relay, and measure what is coming out of the ECU there (as its a convenient location).

[Lazydocker]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

Did you prime the shocks when you fitted them, 1 Bar from an air line ottomh

We had no air line available but I have pressed a tyre inflator (12V jobbie) against them today and the bladders visibly inflated

The pump has inflated the bladders sufficiently to obtain correct height and hold air, just not enough to get the car to rise over standard height

[Lazydocker]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

What do you mean, can't get to it? Your kit won't communicate with ECU? Thats not a good sign, and may indicate an ECU that isn't entirely functional?

TBH, with this system, without ECU diagnostics, you're pretty much pissing in the wind in a force 9, which GM learnt quite quickly, thus added functionality from 1998 onwards.

The donor ECU is post 1998, isn't it?

Failing all that, I'd remove the levelling relay, and measure what is coming out of the ECU there (as its a convenient location).

Am I right in recalling the ECU is in the sensor assembly? Donor parts have come from a 2001

[05omegav6]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

Did you prime the shocks when you fitted them, 1 Bar from an air line ottomh

We had no air line available but I have pressed a tyre inflator (12V jobbie) against them today and the bladders visibly inflated

The pump has inflated the bladders sufficiently to obtain correct height and hold air, just not enough to get the car to rise over standard height

Jack the car up so the rear wheels are off the floor, pop the pipes off, reinflate with the tyre pump until the bladders swell, reconnect hoses and lower the car.

At this point it should be at full height, switch on the ignition and let the system do its thing...

If that doesn't produce the desired effect, summat else is amiss

[Lazydocker]

Done and still not rising... Obviously as soon as you remove the pump the bladders let all the air out though

[TheBoy]

What does live data say about the sensor at various different heights?

Can't get it. But the sensor is working, the pump is pumping... Just no car risey 

What do you mean, can't get to it? Your kit won't communicate with ECU? Thats not a good sign, and may indicate an ECU that isn't entirely functional?

TBH, with this system, without ECU diagnostics, you're pretty much pissing in the wind in a force 9, which GM learnt quite quickly, thus added functionality from 1998 onwards.

The donor ECU is post 1998, isn't it?

Failing all that, I'd remove the levelling relay, and measure what is coming out of the ECU there (as its a convenient location).

Am I right in recalling the ECU is in the sensor assembly? Donor parts have come from a 2001

yes