2008 XJ8 coil spring conversion kit
#1
2008 XJ8 coil spring conversion kit
I have a 2008 XJ8L. I bought a coil spring conversion to replace the awful problematic air suspension. After installing the kit, I received 2 errors. They were Air Suspension Fault and Cats System Fault. The kit came with a module to get rid of these errors but they still come up when I start the car. I bought the kit from Suncore. When I emailed them, they said the 2008 XJ8 had a computer upgrade that renders their module ineffective. Any ideas on what to do from here? Thanks.
#2
Your problem is not new, and as I recall, there was a thread on here about it a few years ago. The cure was to completely remove the Air Suspension Module as obviously it now has nothing to do. The later ASMs had the CATS included, so with ASM removal there is no longer anything to send error messages out. I think the ASM is at the back of the rear seats somewhere, so you have to take these out.
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Hi Phil,
It would be worth double-checking all of your connections for the bypass module. The splice connectors that come with the kit sometimes need to be gently squeezed with pliers to pierce the insulation on the ASM wires.
If that doesn't work, I would ask Suncore why they didn't warn you in advance that their bypass module would not work in your car, since presumably you informed them that your car was a 2008 when you ordered the kit.
Cheers,
Don
It would be worth double-checking all of your connections for the bypass module. The splice connectors that come with the kit sometimes need to be gently squeezed with pliers to pierce the insulation on the ASM wires.
If that doesn't work, I would ask Suncore why they didn't warn you in advance that their bypass module would not work in your car, since presumably you informed them that your car was a 2008 when you ordered the kit.
Cheers,
Don
Last edited by Don B; 09-14-2020 at 08:46 AM.
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Join Date: Feb 2014
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If you were Arnott, would you sell your EBMs separately to folks who purchased less-expensive coil conversion kits from another vendor? It wouldn't make any business sense.
If I recall correctly, the one Suncore kit I installed came with an EBM. I can't remember if I have installed a Strutmasters kit.
Cheers,
Don
Last edited by Don B; 08-12-2021 at 09:19 AM.
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In my own case, I can't compare the ride to a working air system, because I never had one. Mine would sag overnight, lift OK when started, then throw a code after two or three minutes. After that code, the ride was very harsh, even before it sagged again. Could not be happier with the ride on the Arnotts coils!
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