Am I crazy? 4X4 Problem?
#1
Am I crazy? 4X4 Problem?
I just bought a 1998 F150 4.6 long box, and she is a great truck, I bought it from a dealer I trusted, over the years, I asked my salesperson and manager the condition and they told me honestly, then I had a problem come up and the very next day they let go my sales manager and later the salesman. Now I have been dealing with upper management and they are not nice...
Well when I bought the truck it was promised to me the 4x4 was good, of course like a dummy I never even turned it on. But now that it snowed I tried it, with my older turns you put it in 4H and you can tell, this one is weird though, it will spin the wheels with no grab on the front, but going down the highway I can feel it kick in or I think I can when I lick into 4H, now when I put it in 4L from a standstill I can here the clunking and it seems to be ok.
How come 4H does not seem to be on when you put it in and try to make the tires spin, is it because it just grabs when it gets going or what??
Well when I bought the truck it was promised to me the 4x4 was good, of course like a dummy I never even turned it on. But now that it snowed I tried it, with my older turns you put it in 4H and you can tell, this one is weird though, it will spin the wheels with no grab on the front, but going down the highway I can feel it kick in or I think I can when I lick into 4H, now when I put it in 4L from a standstill I can here the clunking and it seems to be ok.
How come 4H does not seem to be on when you put it in and try to make the tires spin, is it because it just grabs when it gets going or what??
Last edited by michaelwalker; 12-19-2008 at 02:22 PM.
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Join Date: Dec 1997
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OK,
Jack the front wheels off the ground and support the truck. Shift into 4x4 and try to turn the front driveshaft. The one coming out of the transfer case. if it turns there is a problem with the transfercase. If it doesn't turn there is a problem locking the front axle.
Regards
Jean Marc Chartier
Jack the front wheels off the ground and support the truck. Shift into 4x4 and try to turn the front driveshaft. The one coming out of the transfer case. if it turns there is a problem with the transfercase. If it doesn't turn there is a problem locking the front axle.
Regards
Jean Marc Chartier
#15
Most likely culprit. Check the vacuum operated front axle disconnect.
Sounds to me like it is either binding up on mud or rust, has a worn fork inside the front diff, or isn't getting a consistent vacuum signal to the actuator itself. There are two vacuum solenoids that operate the actuator, under the hood on the firewall near the battery.
Another possibility is the transfer case shifting cam is stripped. the shift motor will turn the shaft, but the T-case won't switch ranges. Use JMC's front driveshaft troubleshoot suggestion above to test if the T-case is engaging.
Sounds to me like it is either binding up on mud or rust, has a worn fork inside the front diff, or isn't getting a consistent vacuum signal to the actuator itself. There are two vacuum solenoids that operate the actuator, under the hood on the firewall near the battery.
Another possibility is the transfer case shifting cam is stripped. the shift motor will turn the shaft, but the T-case won't switch ranges. Use JMC's front driveshaft troubleshoot suggestion above to test if the T-case is engaging.