I have a 1998 4x4 4 door lt my 4wd high works find but 4 wd low just blinks any thoughts?

 

drive about 5 mph and pop trans into neutral. When vehicle starts to slow press the 4WD lo button. There is a preferred procedure in the owners manual. Get ready for the onslaught of I don't have to do this to get mine in 4 lo. Can't imagine why anyone needs 4lo anyway. I only put mine in 4li once to make sure it worked, nothing more.

 

You must not spend much time in rough terrain. I don't think I've ever used 4HI.

 

update I believe it is the actuator, my hubs are not locking in high either, Or a vacuum leak I will dig deeper.

 

3-button or 4-button (with Auto)? The systems are different.

For either case, if your system will go into 4-hi (and stop flashing), the front axle should be locked in at that point. You can check this by jacking up the right front wheel (only) and seeing if it is easily turned (with engine running). Actuator for this is under the battery tray. Controls and diagnosis for this depends on which system you have.

 

thank you it is a 3 button and the hubs will not lock so it is a 98 I will replace all 3 actuators but the transfer case is engaged

 

Not sure what you mean by the three actuators - if you mean the switch there is easy way to check switch using an ohm meter. I think switches are seldom the problem, especially if light is going on steady when in 4WD.

On the three button, there is a vacuum switch on top of the transfer case to lock in the front axle. You might want to check this out (if the transfer case is going into 4WD but the front axle is not engaging).

Have you found the self-help sections on this site? Some good write-ups on 4WD there. You need to be logged in to see them.

Good luck

 

thank you,Dorman 4WD 4x4 Switch Vacuum Actuator Transfer Case Transmission NIB OE 600500

Dorman 600-901 Transfer Case Motor Actuator

4wd Actuator Dorman 600-102

 

You could save some money by troubleshooting it first. do the lights stay on solid .....could be as easy as the vacuum line to the canister in the rear drivers fender coming off.

 

you are right, but it is a 1998 and I want it to be reliable, this was replaced today ,Dorman 4WD 4x4 Switch Vacuum Actuator Transfer Case Transmission NIB OE 600500 and it was bad,