I don't know where to go from here. You should have gotten the critical parts before you hit fifth grade. Thanks for any advice James You may want to add Year, Make, Model of the truck, does it have Auto 4wd? He had a probe and unhooked the actuator and it powered the actuator and it worked. If that happens, move the truck a few feet and try again. It was quickly put out. Yes the brown wire goes to the t-case switch.
Installed it and same thing, would not work. The dealer has attempted to replace the 4wd switch, this did not fix the problem, they still have the truck. That switch has three as one is ground one is power in and one is power to the front axle actuator. The truck is less than a year old and has 20,700mi. Posted on Feb 03, 2009 That truck did not use a vacuum actuator, it used an electric motor motor. Could that have something to do with it? The 4wd light up so he suggested the transfer case switch and also the actuator. This is a relatively easy change that most any person can do with just about any experience.
However it is not turning while we have it on the jack in 4H. The vehicle was serviced by the dealer and there were no prior warnings. Both wires were dead in both 4H and 2H. But when I go to R for a sec, and put it in D, it then works correctly. Have you checked the transfer case switch yet? The 4 wheel drive and transmission problems were addressed 3 times and all the dealers said nothing was wrong. I am going to jack up the front end now and will get back to you.
Although, thankfully I haven't had to spend hardly any time under it. If your transfer case is engaging and you can see the front drive line spinning, then you either have a bad actuator, switch, or the wiring is bad. Where do the 3 wires go from the solenoid actuator actuator 3 wires to where Now that I have two types of actuators I noticed that the solenoid type requires 3 wires and with the thermal type it only needs 2 wires which I assume are hot and ground. Is the driveline considered engaged if the front driveshaft is turning while in 4 wheel drive? This is a relatively easy change that most any person can do with just about any experience. Miss seams to go away off idle and not noticeable under load. Question: Can an actuator be old and not strong enough to apply enough pressure to lock the axles in? If so that's your problem. If it has 12 volts, the actuator is the problem.
I've only been able to find motor on the T case, but nothing yet on the front axle. Faulty actuator on top of the front diff is worn out. Driveshaft does not spin when we turn tires. Front axle in both 4L and 4H is definitely not engaged. Thankfully it was covered under powertrain warranty.
I can handle fixing it, it only fits 1 way. Transfer case: I checked the switch the top of the transfer case as pictured and of the three wires. You can get a new one at a parts store Napa but they arent cheap. If you turn the key on and turn off the radio so it is quiet you can hear the motor, then the actuator. Lastly, air bag light came on in Dec of 2012. Had second issue of shifting on it's own, may 15th, 2014.
It is adding up already with the actuator purchase, however, I know I wont need one of them at this point. I will still be updating my thread with this info as it will assist someone with the same issues. I then traced the wire to the top of the transfercase and tested both the end of the wire and also where it plugs into the transfer case. History The oem unit uses electricity to heat up a gas in the actuator which in turn forces a plunger to engage the front axles. I really do not want to put in a new crank case but if I have to I guess I will have to. Hang in there and let me know what happens. Instead of using a vacuum to engage the axle, it uses a small electric motor.
This is what it looks like in 4L. From what I have read this seem to be the problem in most cases for the front axle not to engage. I would check voltage at the connector for the front actuator at the front differential - it looks like a large bullet that threads into the front diff. So I said, have you tried it with the truck moving? Thanks for any advice James You may want to add Year, Make, Model of the truck, does it have Auto 4wd? Raise and support vehicle with drive wheels off ground. I think I will have to have my better half switch the 4wd controls while I put my ear on the front actuator. Or Bad vacuum switch on top of the transfer case.