2000 3.4L, manual ac, so I had what started as an intermittent ac clutch fail to engage that sent the vent air from 45, to ambient.
What was hard to troubleshoot was as soon I stop and get me tools out to troubleshoot, the ac would kick on and blow 45 through the vents again like nothings wrong. I was leaning into bad ac clutch coil windings on the way out as there was 12v on the clutch trigger wire and no clutch engagement.
So finally the ac isnt coming on now, and it's triple digit heat outside. Well finally I can troubleshoot the issue.
I found a bad thermisistor 88625-3A090 that has a open reading. Normally there should be a reading of 1.5k - 3.4k ohms (pending evap temp) across the 2 terminals.
All readings on the ac amplifier all checks out. Except between the terminals 2 and 10, which is the thermisistor circuit.
Here's the thing, no one in my state has 88625-3A090, and it's on a national back order.
Why Toyota doesn't have a part number that's an alternative for our application is crazy. I'm asking the collective on here about a creative solution on what I can do next to get my ac up again? Good idea?...I was thinking of putting a resistor in place of thermisistor, and controlling temps with off and on cycling of the ac button? Maybe it's a bad idea?
In the meantime off to the recycle yards I go. The yards are slim pickings these days, hope I can find a 1996-2002 thermisistor to get the ac to limp along temporarily.
Linear Mode
