Quote:
Originally Posted by AntleredRuin
When you say 'electronically actuated heater control', do you mean that you have the full digital screen, vs the knobs or dials? Not sure about the Hilux Surf (especially the 96 model) but I had a similar issue on my 99 Limited T4R with the digital climate control.
You're saying the server motor works? Did you check the white nylon gear in the servo? Those are known to strip and thus fail to fully open the heater flap. The nylon gear doesn't make a full spin, maybe only 90 degrees or so, so I was able to simply remove the gear and flip it 180 degrees so the non chewed-up end was making contact with the adjoining metal gear.
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Found my problem - the servo motor is fine (good tip to keep in mind though). The cable is stiff - the wound steel core musthave corroded slightly and becomes very stiff in the plastic shielding. The valve is perfectly fine.
I've got a new cable on order; if it is no longer in production (as a few less critical Surf-only parts have already been discontinued), I will trim back some of the plastic shielding and work some silicone spray lube into the cable. Interestingly, it seems to be the send of the cable which is in the cabin (not in the engine bay) which iscausing the problems.
Thanks!
EO
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1993 Hilux 2L diesel manual - in storage.
1996 Hilux Surf 3RZ-FE manual - overland vehicle (and rolling restoration).
1989 Landcruiser BJ60 - undergoing full restoration and engine transplant.
Over 250,000 kilometres around Eurasia in Toyota trucks:
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