First my rant on this piece of junk cummins.Im about at my whits end with this thing. Currently I paid 8000$ for this truck with 142,000 miles, I spent 2000$ on the front end, spent 1200$ plus fluid cost to rebuild the trans 15,000 mile ago, then the overdrive goes out 3 monthes ago. Plus I had to pull the trans and reinstall. All these tranny guys are idiots, I cant belive no one can troubleshot this thing, they all want me to yank it out again, and it will be x amount to rebuild. Add in the "extras" I bought like ranch hands 2500$ and 4" lift 2000$, Iv put another 8000$ in this truck, plus killer dowell pin fix, sensor by radioter, heater core, fixed broken reverse lights, new alternator, 2 new batteries, starter. I couldnt even sell this for 8000$ right now with no overdrive, my wife is done with this thing, my brother in law is tired of working on it, and these 2 tranny guys dont want to answer my calls. Including the guy that rebuilt it, these guys just want to lay them on a bench and replace clutches.
If I go out and start truck, then drive down the road it shifts great into overdrive. After one or two cycles, of stopping and starting, it refuses to go into overdrive.c
So Im up to 500$ so far with this overdrive. 47 re 12 valve 1998
Here is what I have done
1) adjust tv cable, every which way possible, no fix, new tv cable, still no fix
2) checked on scan tool, fancy snap on thing at my nephews shop, no codes
3) put resistor thing from genos on wire off pcm to ground, nothing changes
3)check tps, all good 5 volts, then at idle 1.4 volts
4) drop pan,fluid good, hardly any shavings on magnet, idiot tranny guy comes to look at it with pan off,says replace speed sensor and neutral switch .
5)drive to tranny guys house, his fancy computer says tps voltage low, tps voltage high, buy new tps, bell crank, bushings, throttle rod ends. Set throttle rod for the 5" mark under truck, nothing changes. Now computer is cleared no codes for tps.
6) I cleaned all the body grounds today, nothing was really bad as I had
cleaned them a few monthes ago and repaired the ground under drivers battery.
Here is the trouble guide I always see posted and what I have done
.NO 3-4 UPSHIFT
1. O/D Switch In OFF Position. checked good to go
1. Turn control switch to ON position.checked good
2. Overdrive Circuit Fuse Blown. 2. Replace fuse. Determine why fuse failed and repair as necessary (i.e., shorts or grounds in circuit). where is this fuse at?? one under hood is good
3. O/D Switch Wire Shorted/Open Cut. 3. Check wires/connections with 12V test lamp and voltmeter. Repair damaged or loose wire/connection as necessary.checked good to go
4. Distance or Coolant Sensor Malfunction. 4. Check with DRB® scan tool and repair or replace as necessary.dont know where this is, ir what it is, but no compuer code for it
5. TPS Malfunction. 5. Check with DRB® scan tool and replace if necessary.fixed
6. Neutral Sense to PCM Wire Shorted/Cut. 6. Test switch/sensor as described in service section and replace if necessary. Engine no start.replaced, probably didnt need to truck started fine
7. PCM Malfunction. 7. Check with DRB® scan tool and replace if necessary.no code, doubt its pcm
8. Overdrive Solenoid Shorted/Open. 8. Replace solenoid if shorted or open and repair loose or damaged wires (DRB® scan tool).would this show up on scanner? where is this, is this the 2 pack under valve body
9. Solenoid Feed Orifice in Valve Body Blocked. 9. Remove, disassemble, and clean valve body thoroughly. Check feed orifice.
10. Overdrive Clutch Failed. 10. Disassemble overdrive and repair as needed.
11. Hydraulic Pressure Low. 11. Pressure test transmission to determine cause.
12. Valve Body Valve Stuck. 12. Repair stuck 3-4 shift valve, 3-4 timing valve.
13. O/D Piston Incorrect Spacer. 13. Remove unit, check end play and install correct spacer.
14. Overdrive Piston Seal Failure. 14. Replace both seals.
15. O/D Check Valve/Orifice Failed. 15. Check for free movement and secure assembly (in piston retainer). Check ball bleed orifice.
Any comments are appreciated
If I go out and start truck, then drive down the road it shifts great into overdrive. After one or two cycles, of stopping and starting, it refuses to go into overdrive.c
So Im up to 500$ so far with this overdrive. 47 re 12 valve 1998
Here is what I have done
1) adjust tv cable, every which way possible, no fix, new tv cable, still no fix
2) checked on scan tool, fancy snap on thing at my nephews shop, no codes
3) put resistor thing from genos on wire off pcm to ground, nothing changes
3)check tps, all good 5 volts, then at idle 1.4 volts
4) drop pan,fluid good, hardly any shavings on magnet, idiot tranny guy comes to look at it with pan off,says replace speed sensor and neutral switch .
5)drive to tranny guys house, his fancy computer says tps voltage low, tps voltage high, buy new tps, bell crank, bushings, throttle rod ends. Set throttle rod for the 5" mark under truck, nothing changes. Now computer is cleared no codes for tps.
6) I cleaned all the body grounds today, nothing was really bad as I had
cleaned them a few monthes ago and repaired the ground under drivers battery.
Here is the trouble guide I always see posted and what I have done
.NO 3-4 UPSHIFT
1. O/D Switch In OFF Position. checked good to go
1. Turn control switch to ON position.checked good
2. Overdrive Circuit Fuse Blown. 2. Replace fuse. Determine why fuse failed and repair as necessary (i.e., shorts or grounds in circuit). where is this fuse at?? one under hood is good
3. O/D Switch Wire Shorted/Open Cut. 3. Check wires/connections with 12V test lamp and voltmeter. Repair damaged or loose wire/connection as necessary.checked good to go
4. Distance or Coolant Sensor Malfunction. 4. Check with DRB® scan tool and repair or replace as necessary.dont know where this is, ir what it is, but no compuer code for it
5. TPS Malfunction. 5. Check with DRB® scan tool and replace if necessary.fixed
6. Neutral Sense to PCM Wire Shorted/Cut. 6. Test switch/sensor as described in service section and replace if necessary. Engine no start.replaced, probably didnt need to truck started fine
7. PCM Malfunction. 7. Check with DRB® scan tool and replace if necessary.no code, doubt its pcm
8. Overdrive Solenoid Shorted/Open. 8. Replace solenoid if shorted or open and repair loose or damaged wires (DRB® scan tool).would this show up on scanner? where is this, is this the 2 pack under valve body
9. Solenoid Feed Orifice in Valve Body Blocked. 9. Remove, disassemble, and clean valve body thoroughly. Check feed orifice.
10. Overdrive Clutch Failed. 10. Disassemble overdrive and repair as needed.
11. Hydraulic Pressure Low. 11. Pressure test transmission to determine cause.
12. Valve Body Valve Stuck. 12. Repair stuck 3-4 shift valve, 3-4 timing valve.
13. O/D Piston Incorrect Spacer. 13. Remove unit, check end play and install correct spacer.
14. Overdrive Piston Seal Failure. 14. Replace both seals.
15. O/D Check Valve/Orifice Failed. 15. Check for free movement and secure assembly (in piston retainer). Check ball bleed orifice.
Any comments are appreciated