05-21-2018, 01:15 PM
Some More interesting data:
I've been working in charlottesville recently and am making the dreaded drive over afton mountain during rush hour.
On Monday of last week, I reconnected my ac system at the single conductor plug closest to the compressor. It blew so cold and so nice. On my way home, I left it plugged in, and sure enough about 1/2 up afton, the temp guage crept up over the 12 oclock position. I quickly changed from cold to heat, full blast on the defrost, and windows down to vent the extra heat. Never did it again the whole ride home, despite turning temp selector back to cold.
On Tuesday, very similar conditions. ~70-80F with HIGH humidity, this time with the compressor unplugged. I downshifted, I accelerated from 45-80 (typical afton bs), COULD NOT GET THE CAR TO OVERHEAT.
I've now gone to the effort of removing the "ad fan" fuse from the fuse panel in the engine bay to prevent the ac fan from being on. I'm waiting for a couple hot days to see if only having the cooling fan (instead of both the ac and cooling fan - still stuck on this problem) willl cause the car to overheat. I'm also seeing the cooling fan on even with the engine cold. Only while the engine is running though. With the key in the "on" position, no fans on. I've done the procedure to test the fan by grounding the tfa and gnd terminals in the diagnostics box, it works. The other test, where the engine is running, and remove the plug, and ground to chassis won't work, because my fan is always on, even unplugged. Faulty switch or ground fault in wiring somewhere upstream?
I'm beginning to think that maybe the previous owners weren't as honest as I originally thought. Have I mentioned that I found out the engine has been replaced?? Wonder wtf else has been meddled with...
I've been working in charlottesville recently and am making the dreaded drive over afton mountain during rush hour.
On Monday of last week, I reconnected my ac system at the single conductor plug closest to the compressor. It blew so cold and so nice. On my way home, I left it plugged in, and sure enough about 1/2 up afton, the temp guage crept up over the 12 oclock position. I quickly changed from cold to heat, full blast on the defrost, and windows down to vent the extra heat. Never did it again the whole ride home, despite turning temp selector back to cold.
On Tuesday, very similar conditions. ~70-80F with HIGH humidity, this time with the compressor unplugged. I downshifted, I accelerated from 45-80 (typical afton bs), COULD NOT GET THE CAR TO OVERHEAT.
I've now gone to the effort of removing the "ad fan" fuse from the fuse panel in the engine bay to prevent the ac fan from being on. I'm waiting for a couple hot days to see if only having the cooling fan (instead of both the ac and cooling fan - still stuck on this problem) willl cause the car to overheat. I'm also seeing the cooling fan on even with the engine cold. Only while the engine is running though. With the key in the "on" position, no fans on. I've done the procedure to test the fan by grounding the tfa and gnd terminals in the diagnostics box, it works. The other test, where the engine is running, and remove the plug, and ground to chassis won't work, because my fan is always on, even unplugged. Faulty switch or ground fault in wiring somewhere upstream?
I'm beginning to think that maybe the previous owners weren't as honest as I originally thought. Have I mentioned that I found out the engine has been replaced?? Wonder wtf else has been meddled with...
1991 Miata - Phillis
2003 Xterra - Sarah
"America is all about speed. Hot, nasty speed." Eleanor Roosevelt
2003 Xterra - Sarah
"America is all about speed. Hot, nasty speed." Eleanor Roosevelt