Reply With QuoteI hope this will round out this post.
I have attached some pics of this mornings' work.
I put it down to a dodgy thermistor, but I couldn't confirm it, not without resistivity figures for the thermistor. The local guys didn't have any, and I later found out that one I likely needed had been discontinued.
I put the ohm-meter across the wires and got 1.1kOhm resistance in ambient conditions. In a bath of ice water I read 2.8kOhms.
I rang the local electrician and asked if they had any thermistors. They suggested I go to the dump and see if I can get some from some of the old split-system house aircons, which I did. It would have been hit-and-miss buying without knowledge of their resistance curves/tables.
Anyyywayyy... I salvaged 6 of them, tested them all in ambient air and ice water and from there selected the one with the lowest electrical resistance as a test (with the aim of working up until one, if any, sufficed). I hit the jackpot on the first one!! It was reading 3.5kOhm at ambient (32 deg or so) and 9.5kOhm in ice water. Once installed it was cutting the AC on and off at acceptable levels. I have managed, after about 30 minutes of driving, to find that setting the temp dial about half way around works great, though the kids in the back were still complaining they were hot. I think this more a 300tdi issue...
The photos are of the actual new thermistor, just fitted. The one I removed was jammed in the hole visible in the photo. The mechanic advised that it should be mounted on the fascia of the outflow, just as it is now.
The bonus was that the next thermistor to test was very similar to the 1st in resistance, so I'll keep it as a spare.
In the end, I have solved and fixed it with great input from fellow LR enthusiast. Thanks. Cost me $2 in fuel to get to the dump and a bit of time. I hope this helps someone else.
Next task is to improve A/C efficiency in the Landy - Ideas? I'm thinking window tinting and clear blind to cover the cargo barrier?
Catchas,
Joshua.
Bookmarks