Member Since: 10 Jun 2010
Location: UK
Posts: 1625
Aircon steppers or condensor?
Getting cold air out of passenger side and tepid air on drivers. Put on full heat and get heat on driver's side and tepid air on passenger.
Was showing the usual stepper error codes, so cleared them. Then did the HEVAC reset (econ & recirc buttons) and got 8 error flashes and none from defrost LED. Ran system same symptoms but the error codes have yet to return!
Am I safe to assume it is dashboard dismantling time to replace the stepper motors?
Thanks. Tony
Club RLD Wheel Protector & Sump Guard
Club 4x4 Info activated
8th Jul 2019 9:25 pm
Oswiperus D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1598
Starting to see a few on the forum now with a partially blocked heater matrix, the passenger side seems to silt up first and go cool. I think some have had success back flushing with a hose pipe from the bulkhead or I think changing the matrix isn't tragically difficult. Stepper motors are a to change, I did all four some years ago when one failed.Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
8th Jul 2019 10:30 pm
jueylea
Member Since: 13 Apr 2019
Location: Adelaide
Posts: 6
Had the same issue with my d4. Flushed the heater matrix via the heater pipes alongside the motor, both directions. Injecting some air with the flushing water in pulses brought out a lot of crap. Where does the silt come from? Works like a treat now.
Was concerned initially that it may have been the stepper motors but confirmed the relevent were all working with a camera scope.
11th Jul 2019 10:44 pm
ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
Thanks Guys, will fire up the borescope and hope it is not the steppers! Tony
Club RLD Wheel Protector & Sump Guard
Club 4x4 Info activated
12th Jul 2019 4:59 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
jueylea wrote:
. Where does the silt come from?
.
Corrosion inhibitors in the coolant breaking down and the engine block starts rotting from the inside.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum