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mt_goat · 10-17-2006, 10:09 AM

Thanks for the help guys. Brian, when I look at the front of the grill I'm suprised any air gets through there, lol. There appears to be a lot of plastic in the way that could be cut out (not sure how good it would look). My TJM bumper, winch and trans coolers also don't help.

Jason gave me some good info on tracking down the park/neutral switch CEL, (it helps a lot to have a Toyota Master diagnostic tech following my thread) so hopefully that will be enough, thanks for the offer though.

Mudbutt, thanks for the info. What were the outside temps like for those readings?

I got the AC serviced this morning (Auto Air in OKC) and it works but they had to bypass the engine temp cutoff relay to get power to the compressor. Appearantly just the 4x4 autos have this cutoff (in case the engine overheats it shuts down the AC compressor power) I talked to Mike and he seemed to remember having to bypass that on a few trucks. The 3.0 AC amp was looking for a signal from the old engine that it now doesn't get from the new engine. The AC shop said the Tacomas don't have that cutoff relay. I'll just have to manually shut off the AC if the engine over heats, which I would do anyway.

They blew out the condensor but there wasn't much (or any) old R-12 oil in it, and they refilled the system with 4 oz of PAG oil and a 1/4 oz of dye. They said the PAG oil would be better for the compressor than Ester oil and would work fine, and any residual R12 oil will just settle in the low spots of the system. So $210 later it's now a working R134 AC system. Not too bad I guess considering they had to track down the compressor power problem, they also replaced the R12 fittings with 134 adapters and adjusted the AC amp so it would come on at the lowest idle possible.

Of course as soon as I get one thing fixed something else goes wrong. Now I notice the cruise control quit working. Haven't had time to look at that yet. It was working fine till I messed with the ORS harness to fix the OD button. Maybe that and the park/neutral switch problem are related and I can fix 2 at the sametime.

10-17-2006, 10:09 AM	#315 (permalink)
mt_goat Contributing Member Join Date: Nov 2002 Location: Oklahoma State Posts: 7,669	Thanks for the help guys. Brian, when I look at the front of the grill I'm suprised any air gets through there, lol. There appears to be a lot of plastic in the way that could be cut out (not sure how good it would look). My TJM bumper, winch and trans coolers also don't help. Jason gave me some good info on tracking down the park/neutral switch CEL, (it helps a lot to have a Toyota Master diagnostic tech following my thread) so hopefully that will be enough, thanks for the offer though. Mudbutt, thanks for the info. What were the outside temps like for those readings? I got the AC serviced this morning (Auto Air in OKC) and it works but they had to bypass the engine temp cutoff relay to get power to the compressor. Appearantly just the 4x4 autos have this cutoff (in case the engine overheats it shuts down the AC compressor power) I talked to Mike and he seemed to remember having to bypass that on a few trucks. The 3.0 AC amp was looking for a signal from the old engine that it now doesn't get from the new engine. The AC shop said the Tacomas don't have that cutoff relay. I'll just have to manually shut off the AC if the engine over heats, which I would do anyway. They blew out the condensor but there wasn't much (or any) old R-12 oil in it, and they refilled the system with 4 oz of PAG oil and a 1/4 oz of dye. They said the PAG oil would be better for the compressor than Ester oil and would work fine, and any residual R12 oil will just settle in the low spots of the system. So $210 later it's now a working R134 AC system. Not too bad I guess considering they had to track down the compressor power problem, they also replaced the R12 fittings with 134 adapters and adjusted the AC amp so it would come on at the lowest idle possible. Of course as soon as I get one thing fixed something else goes wrong. Now I notice the cruise control quit working. Haven't had time to look at that yet. It was working fine till I messed with the ORS harness to fix the OD button. Maybe that and the park/neutral switch problem are related and I can fix 2 at the sametime. __________________ Dale 93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift front, Alcan springs rear, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" Body Lift, 1.5" ball joint spacers, manual hubs, TJM T-17, Warn m8000. Last edited by mt_goat; 10-17-2006 at 10:13 AM.