Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
Discovey Suspension Compressor 188 Degrees!!!! - HELP
Hi there,
Ok so whilst traveling home from work this afternoon with the Ifor Williams on the back the Disco dropped to its bumps and the message "Suspension will rise when system has cooled" appeared. I pulled over grabbed the IID tool and its saying the compressor is 188 DEGREES!!! This was at 3pm this afternoon. I've just been out to it again and its still showing as 188 Degrees!
Is there a fuse I can pull or something to get it to rethink its current temperature? The compressor isn't a year old yet!!
14th Feb 2019 8:28 pm
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
I've just been and pulled fuse 3 and 26 in the engine bay this made no difference
14th Feb 2019 8:43 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4580
What make compressor is it?yµ (idµ - eAµ) ψ=mψ
14th Feb 2019 9:12 pm
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
I think this ones a Dunlop
14th Feb 2019 9:51 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4580
Hmmm, I think that might be similar to the Hitachi, someone else will confirm. It does sound like there's a problem with the motor. Or, there's a leak causing it to run continually. Is it running now or in a lockout type mode?yµ (idµ - eAµ) ψ=mψ
14th Feb 2019 10:38 pm
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
The compressor is making no noise at all. It ran for a few moments when I put the trailer with about 500kg on it to self level and did look to be sitting back end high of that makes sense. But other than that it hasn’t run at all
14th Feb 2019 10:44 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4580
Sounds like it's kaput check fuses and have a look at the relay to see if it has any sign of heat damage. If it does you could swap another temporarily to see if the unit will run. It's no big job to remove the compressor and bench test the motor. See if you can get any further codes in the morning and go from thereyµ (idµ - eAµ) ψ=mψ
14th Feb 2019 11:34 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13576
Littlewill wrote:
I think this ones a Dunlop
Hi
Hope it may be handy as a comparison for u, enclosed an iid report on mine , also have a Dunlop compressor
As prof G said , maybe there’s a leak
Just a thought is the compressors air filter that’s sits in the LH boot locker clean
14th Feb 2019 11:37 pm
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
Morning,
Just been out to it this morning and bearing in mind its -2 here and the Disco hasn't been moved for about 14 hours the air compressor is still saying its 188 degrees?
15th Feb 2019 6:38 am
jenkinsdh
Member Since: 11 Aug 2015
Location: Hinckley
Posts: 53
To me, a sensor error (within the compressor) sounds more plausible than a motor/compressor failure.
There's no way it can have been sat with no volts or movement overnight and still be at 188deg C. Indeed, the fact the number hasn't changed at all would seem to indicatean open circuit failure (or similar) and it's just reading full scale. Even if it was genuinely hot you would still expect it to move around slightly due to measurement accuracy, environment etc etc.
Just my 2p.
D
15th Feb 2019 8:20 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13576
Hi
Indeed shouldn’t still be reading that kind of temperature
Wonder could there be a break in the wiring at the front wheel arch, so the ecu isn’t getting the message back ???
15th Feb 2019 9:51 am
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
I agree completely. I think something has gone astray with a sensor. As it’s still under warranty I have taken it back to Duckworths and they are going to let send it away for diagnosing. In the mean time I’ve had to buy another one just got to hope they find it to be faulty when bench tested.
15th Feb 2019 2:44 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4580
188 degC at the motor is way above its operating threshold. It could be one of the temperature sensors is just faulty, but I don't know how easily new ones can be obtained. If the motor has actually overheated to 188 deg its most likely scrap, as it won't last even if you do get it going. If there's a burnt smell from the motor when you remove it don't refit.yµ (idµ - eAµ) ψ=mψ
15th Feb 2019 2:49 pm
Littlewill
Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484
I actually have a couple of compressors laying around from other discovery’s so if you could tell me where the temp switch is prehaps I could change it and see if that fixes it?
15th Feb 2019 5:29 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4580
From memory there are two, not sure about the Dunlop compressor but one should be on the compressor head, and one other for the motor. When you ran the diagnostics it should indicate whether it was the motor or the compressor overheating!yµ (idµ - eAµ) ψ=mψ
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