Bersaglieri
Ron Swanson's Brother
- Joined
- Jan 8, 2008
- Messages
- 1,957
Update:
I bored out the TPS mounting holes and got it to low .60's at idle and 3.0-3.1v at WOT.
But even then OD doesn't work. All the other gears act normal, after being in 3rd in a few lockup occurs normally or I can engage it manually with the lockup switch. So lockup happens like normal. With the lockup switch off and in 3rd, if you de-illuminate the "OD off" button the converter will unlock like it normally would to shift into 4th, but it never shifts. Not if I lift, not if I hold up the brake pedal, not if I'm at 1/2, 3/4, or full thottle.
Next I found the brown wiring on the transmission plug. I did another drive and grounded it in various conditions [locked up, not locked, etc] No overdrive. So I guess that narrows it down to OD solenoid and faulty OD clutches.
Is there anything else I can check? Anyone have the part number for a OD solenoid? Looks like I'll be dropping the pan tomorrow and going to work on that...
Here's the most confusing thing to me: There were a few times the truck didn't go into lockup automatically. One of those times I had the TPS unplugged, lockup wouldn't work even with the switch. One time with the TPS plugged in I tried using my lockup switch and it didn't work. I shut the key off while coasting in neutral and turned it back on, suddenly lockup switch worked again. Does that have anything to do with a 'safe mode' or something like that? I've had the truck pop into 3rd in the past [very few times] and I had to go key off then key on and it would allow me to have OD again, but I think it was during a hard WOT run.
I'll be checking OD pressure in a few, gotta eat a late supper and head back out.
I bored out the TPS mounting holes and got it to low .60's at idle and 3.0-3.1v at WOT.
But even then OD doesn't work. All the other gears act normal, after being in 3rd in a few lockup occurs normally or I can engage it manually with the lockup switch. So lockup happens like normal. With the lockup switch off and in 3rd, if you de-illuminate the "OD off" button the converter will unlock like it normally would to shift into 4th, but it never shifts. Not if I lift, not if I hold up the brake pedal, not if I'm at 1/2, 3/4, or full thottle.
Next I found the brown wiring on the transmission plug. I did another drive and grounded it in various conditions [locked up, not locked, etc] No overdrive. So I guess that narrows it down to OD solenoid and faulty OD clutches.
Is there anything else I can check? Anyone have the part number for a OD solenoid? Looks like I'll be dropping the pan tomorrow and going to work on that...
Here's the most confusing thing to me: There were a few times the truck didn't go into lockup automatically. One of those times I had the TPS unplugged, lockup wouldn't work even with the switch. One time with the TPS plugged in I tried using my lockup switch and it didn't work. I shut the key off while coasting in neutral and turned it back on, suddenly lockup switch worked again. Does that have anything to do with a 'safe mode' or something like that? I've had the truck pop into 3rd in the past [very few times] and I had to go key off then key on and it would allow me to have OD again, but I think it was during a hard WOT run.
I'll be checking OD pressure in a few, gotta eat a late supper and head back out.
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