Compression Ignition Addict
Join Date: Mar 2011
Location: Chicago, IL
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4x4 Issues Need Explanation
My last Ex I bought the 4x4 didn't work so they replaced the front hubs, U joint, actuator and repaired the vacuum line. That 4x4 worked well until I sold it. When I bought this truck one of the hubs was slightly hanging out so I knew I would need hubs and the shop that did my engine work replaced both hubs and repaired the vacuum line and said 4x4 worked. I picked up in the fall and didn't get a chance to test it but recently when I tried the HVAC went from vent to defroster and I didn't notice any changes in the steering effort so I knew it wasn't working. The shop told me to just put the auto hubs in manual and I did that and found out that I still had to put the dash switch on 4x4 to engage. I tried it in a snow filled lot and could tell the difference.
What does the dash switch do?
What happens in the hubs to engage 4x4?
What else is engaged/turning in the front driveline when in 4wd compared to 2wd?
Is I harmful to drive with the hubs locked and the dash switch on 2wd?
What wears or what damage happens if it is driven in 4x4 on dry surfaces? Does driveline binding only occur in sharp turns?
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