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Technican: Hello, To clarify..will the transmission shift to third gear and the torque converter clutch engage all right with the shift lever in Drive?
What happens when you then move the shift lever to Overdrive? Does the transmission shift to fourth gear with no torque converter engagement or is there simply no change...you are still in third gear?
Have you checked your brake switch adjustment to ensure the torque converter clutch is not receiving a "disengage signal" as would occur when the brakes are applied?
I'll try to help,
Owner: I use to be able to put it in 4 high on the fly . now it will not, I have power to the switch on the dash until i put in drive . would the neutral safety switch have anything to do with it.
Technican: Man, I was thinking transmission gears! You are talking about 4WD HI aren't you?
Let me get on track and I'll be back soon.
Technican: Okay,
Troubleshooting starts by checking for a blown fuse. Check for a faulty transfer case switch. Faulty wiring. Transfer case linkage improperly adjusted, and finally, internal transfer case mechanical problem.
TRANSFER CASE LINKAGE ADJUSTMENT:
Place shift lever in 4H position. Raise vehicle and remove linkage from shift lever. Move shift lever on transfer case fully forward. Adjust shift linkage with swivel to align with shift lever. Reattach linkage and lower vehicle.
4WD WILL NOT ENGAGE:
1. Test power to transfer case switch. With ignition "ON", connect test light to ground and backprobe Brown wire terminal at transfer case switch connector. Test light should light. If so, proceed to next step. If not, inspect 25-amp 4WD fuse in fuse block. If fuse is okay, attach test light to ground and backprobe Pink/White terminal at convenience center. Test light should light. If so, repair open in Brown wire between convenience center and transfer case switch. If not, repair open in Pink/White wire between convenience center and 4WD fuse in fuse block.
2. Test transfer case switch. With transfer case shift selector in 4WD position and ignition "ON", attach test light to ground and backprobe Light Blue wire terminal at transfer case switch. Test light should light. If so, proceed to next step. If not, replace transfer case switch.
NOTE! Remainder of transfer case electronic testing and diagnosis is performed with transfer case gear selector in 4WD position and ignition "ON".
3. Test front axle solenoid power circuit. Attach test light to ground and backprobe Light Blue wire terminal of disconnected front axle solenoid. Test light should light. If so, proceed to next step. If not, repair open in Light Blue wire between front axle solenoid and transfer case switch.
One more step to send you in a short while.
Technican: NOTE! Remainder of transfer case electronic testing and diagnosis is performed with transfer case gear selector in 4WD position and ignition "ON".
3. See previous message sent.
4. Test front axle solenoid. Attach test light between Light Blue wire terminal and Black wire terminal of connected front axle solenoid. If test light lights, replace front axle solenoid and proceed to next step. If test light does not light, repair open in Black wire between front axle solenoid and ground.. If no opens in circuit are found, replace transfer case relay.
Your turn,
Owner: hey rich here i will check solenoid as soon as possible and get back to you. thanks
Technican: Good, I'll wait to hear from you.
Technican: How are things going here?
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