Help

hi, I'm new to the site, hope I'm not stepping out of line by asking for help in my first post

I have just bought a 2001 RR 4.0 Westminster, all has been well untill on my way home last night, I could not turn down the heater temp it just got hotter and hotter, this morning the total opposite, no heat at all also I can't change the heater direction it stays on screen, the lights on the switched change tho

any help would be very welcome.

cheers, Mo

Blend motors or the HEVAC head has failed. Needs putting on diagnostics.

^^^^^ What D said....

What does that mean in laymans terms?

RangieMo2 said:

What does that mean in laymans terms?

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the little motors that move the flaps controlling air distribution and temperature have packed up. HEVAC is the Heating Ventilation and Air Conditioning control unit, does it have a little book symbol on the display?

The temperature and distribution flaps inside the Heating and Ventilation and Air Conditioning (HEVAC) unit are controlled by 3 motors - Blend Motors.

The Blend Motors are prone to getting stuck and stripping the servo gears inside, or the flaps get stuck and stall the motors....

They are a right pain to get to as they are buried under the dashboard, and entails quite a bit of work to get to....

Although clever folks have devised shortcuts to the offical procedure which is to remove most of the dash....!!!!

The HEVAC head unit is the device you control with all the butons on, at times this can lose its marbles, and stores spurious faults.

Best get it onto a Fault Code Reader and see what faults are being stored in the HEVAC unit before going further....

Possibilites are the Blend motors have stalled....a look at the stored faults will determine were to go next with it.

Jinx....

Thanks guys, No I have no symbles showing

RangieMo2 said:

Thanks guys, No I have no symbles showing

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Then it's possible the problem is in the HEVAC unit itself. Treat yourself to a Nanocom from www.blackbox-solutions.com and you can diagnose all P38 faults yourself. Save you a fortune in the long run assuming you intend to work on the car yourself

Best get any faults stored read.

It has been known for the Blend motors to stall/fail and no Symbol to come up.

If the gears have stripped in the motors, a symbol may not necessarily show as the HEVAC system will not know the flap isn't moving as the motor still is...

Strange all 3 should go bang at the same time though....deffo get it on a fault reader and see whats going on....

^^^^^ Again, what D said......

Saint.V8 said:

Best get any faults stored read.

It has been known for the Blend motors to stall/fail and no Symbol to come up.

If the gears have stripped in the motors, a symbol may not necessarily show as the HEVAC system will not know the flap isn't moving as the motor still is...

Strange all 3 should go bang at the same time though....deffo get it on a fault reader and see whats going on....

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Exactly what I was thinking, could it be as simple as a connector coming adrift somewhere?

That is possible, but usuallu if the HEVAC unit can't talk to the motors, it displays the testbook symbol on the HEVAC display....

All 3 motors are connecte dto the same plug on the rear of the unit...

Do you have the RAVE manuals?? These are the Land Rover Workshop Manuals (Rover Automotive Vehicle Encyclopedia - or something like that)

You can get them here....

land rover service factory manual RAVE download land rover resource, service manual, workshop factory manual, download, rave, vehicles including discovery, series, defender, range rover, freelander, LR3, Handbooks, Catalog, Catalogue, Land Rover Inte

No, I have no manuals, spose a good start point would be to check the connector

I only bought the car on Saturday, private sale :frown:

So my next question would be, anyone know of a trusted Landy specialist in the Dartford area?

Range rover heaven. Give these guys a call, not often you see so many working Range rovers all i one place, must have had invisiable tow ropes.
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RangieMo2 said:

No, I have no manuals, spose a good start point would be to check the connector


So my next question would be, anyone know of a trusted Landy specialist in the Dartford area?

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I could possibly supply you a copy of rave and microcat, as for the landy specialist in the Dartford area I dont know of one, but I might be able to read your fault codes if you want???

zzr1200 said:

I could possibly supply you a copy of rave and microcat, as for the landy specialist in the Dartford area I dont know of one, but I might be able to read your fault codes if you want???

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Thanks for the offer, we are not to far apart either.

take it you are also a fellow Kwaka rider? I ride GTR1400

RangieMo2 said:

take it you are also a fellow Kwaka rider? I ride GTR1400

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I've always wanted a zzr1200, I have a dead zzr1100, something to do with the bigend letting go and making a hole in the crankcase while on the rev limiter in fourth gear......

Got a bit arse end happy i can tell you......


PS. you have a PM

Good news, problem solved

Took the radio out, had a good old prod and poke at the cables and connectors to the HEVAC unit and all is well (for now)