- Joined
- Sep 26, 2003
- Threads
- 117
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- 11,207
- Location
- Lancaster, Ohio, USA
- Website
- www.tlcperformance.com
Tim has a 1997 40th that has been swapped with an engine & trans from a 2003? Tundra. 100K on the engine, 250K on the body & chassis. It runs & drives good and most of the swap is well done by the PO. Some details that have been straightened out are air filter, MAF, fan shroud, PS & ATF hose routing, cruise control...
The one thing that we are still struggling with is Air Conditioning. It would only blow warm air & Tim said he was really missing the AC on a recent road trip to the beach. It has the stock V8 compressor and a couple of custom fabbed hoses to connect to the FZJ80 vehicle plumbing. Initial check on the low pressure port showed it didn't have much charge.
As a first step, the receiver/dryer and the expansion valve were both replaced with new Denso parts. Seemed prudent, considering the miles on the body. Leaves & dirt removed from evap box. System recharged with 750gr of R134 and some oil. Optimum fill is allegedly 800-900, but due to there only being a low pressure port, it's hard to judge how much juice is actually needed. Heater valve was adjusted to get full close.
With all that basic stuff done, it only shows 5-10 degree of temp drop out the center vents. But (and this is a big but), it is piddling a steady stream of cold water out the evap drain, which makes me think the evap core is actually getting cold. I'm wondering if there is a problem with the blend door motor not working right, maybe not working at all, stuck in the winter position? At this mileage it would not be surprising if the automatic climate control crap was wonky.
I tried searching the forum, but couldn't find much about this sort of problem. LMK if I missed a good thread on climate control diagnosis. Thanks!
The one thing that we are still struggling with is Air Conditioning. It would only blow warm air & Tim said he was really missing the AC on a recent road trip to the beach. It has the stock V8 compressor and a couple of custom fabbed hoses to connect to the FZJ80 vehicle plumbing. Initial check on the low pressure port showed it didn't have much charge.
As a first step, the receiver/dryer and the expansion valve were both replaced with new Denso parts. Seemed prudent, considering the miles on the body. Leaves & dirt removed from evap box. System recharged with 750gr of R134 and some oil. Optimum fill is allegedly 800-900, but due to there only being a low pressure port, it's hard to judge how much juice is actually needed. Heater valve was adjusted to get full close.
With all that basic stuff done, it only shows 5-10 degree of temp drop out the center vents. But (and this is a big but), it is piddling a steady stream of cold water out the evap drain, which makes me think the evap core is actually getting cold. I'm wondering if there is a problem with the blend door motor not working right, maybe not working at all, stuck in the winter position? At this mileage it would not be surprising if the automatic climate control crap was wonky.
I tried searching the forum, but couldn't find much about this sort of problem. LMK if I missed a good thread on climate control diagnosis. Thanks!