Taximan2011
New Member
Can't even see an aspiration motor
Little grill by the clock, with the ignition on check for the fan running. Blow it out with and airline.Can't even see an aspiration motor
The way I see it from my diagnosis so far is it must be a hevac ecu fault.
When I switch ignition on the top distribution servo cycles. And flaps open and close so the motor works.
When I connect nanocom I can calibrate motors well the side 2 anyway.
I can also force the RH and Lh motors individually to any setting so they work.
The only fault is as follows:-
When I try and force the distribution motor the output will adjust on nanocom to any set value put in. However the input figure shows 81% and remains at that figure always.
I'm assuming that it can only be getting this message from the hevac ecu. So am assuming that there is the part that needs replacing.
ANY COMMENTS ON THIS DIAGNOSIS VERY WELCOME
I removed 3 blend motors by undoing 6 screws replaced with new blend motors then rebuilt dash and tested with nanocom and tried recalibration. Then realising no joy disconnected battery removed dash undid distribution motor and checked flaps were free moving by hand they were so replaced blend motor. Reattached hevac controls connected battery plugged in nanocom cycled ignition to position 2 watched distribution flaps cycle close then open. Then tried calibration from nanocom.
That's all I have done. If anyone has been here before then that I do not know
Have looked on my version of rave cannot find any detail as to how you dismantle quadrant and rebuild etc ???
Ok. Got a local breaker who has agreed to let me have a hevac control unit on sale or return plug it in and see if any different
I have put my original set back in as the set I bought made no difference
I read it that he put his original HEVAC back as the replacment made no difference Tony, not that the motors were secondhandSo after all this buggering about you now come up with the fact they are second hand motors. Were they zeroed when you got them? It maybe that someone has stripped them to zero them and reassembled them incorrectly and the pot is either duff or off set. It only has limited travel in both directions it is not a 360 degree pot.
I read it that he put his original HEVAC back as the replacment made no difference Tony, not that the motors were secondhand