85 CUCV
Junior Member
- Joined
- Oct 27, 2018
- Posts
- 17
- Reaction score
- 4
- Location
- Homer Alaska
- First Name
- Terry
- Truck Year
- 1985
- Truck Model
- CUCV M1009
- Engine Size
- 6.2 l diesel
85 CUCV M1009 (K5) 6.2l diesel, Th400/208 3.08 gear, 33" tires, dual exhaust 2-1/2" Flowmaster, 57,500 miles on engine and transmission both Original units.
Two days ago while doing some maintainance I Found and replaced the vacuum lines from the mechanical Vacuum pump to the VRV (on the IP) and from VRV to transmission modulator vlv. (All this engine has)
Prior to this the shifts had been rather soft and 1-2 was early. 2-3 also soft.
After replacing the hoses the shifts became much firmer and 1-2 is now at about 23 mph after a VRV adjustment. 2-3 shift however is still very high coming around 50 mph.
If I lift above 45 it may shift up but is sloppy doing so and slow to shift.
Fluids are in fair condition and level is right on full. vacuum from the pump and to the modulator has been verified in spec
2. Second, It seems like it may have a converter issue as well. Not an automatic guy (this is my 2nd one) but it seems like the rpm has to climb quite a bit before the transmission starts to move the vehicle and at times off road in Hi range crawling it just won't pull the rig up onto a rock even with a full throttle. Acts like a slipping clutch with no stink. Engine power is fine.
Thanks in advance for any help you can give me
Two days ago while doing some maintainance I Found and replaced the vacuum lines from the mechanical Vacuum pump to the VRV (on the IP) and from VRV to transmission modulator vlv. (All this engine has)
Prior to this the shifts had been rather soft and 1-2 was early. 2-3 also soft.
After replacing the hoses the shifts became much firmer and 1-2 is now at about 23 mph after a VRV adjustment. 2-3 shift however is still very high coming around 50 mph.
If I lift above 45 it may shift up but is sloppy doing so and slow to shift.
Fluids are in fair condition and level is right on full. vacuum from the pump and to the modulator has been verified in spec
2. Second, It seems like it may have a converter issue as well. Not an automatic guy (this is my 2nd one) but it seems like the rpm has to climb quite a bit before the transmission starts to move the vehicle and at times off road in Hi range crawling it just won't pull the rig up onto a rock even with a full throttle. Acts like a slipping clutch with no stink. Engine power is fine.
Thanks in advance for any help you can give me
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