4wd test
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Joined: Nov 2004
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4wd test
I would like to test my 4wd on my Ranger 1999. This truck have a electrical transfert case. Yesterday I tried little test on ice in a little slope. I put it on high 4wd and I did two test. First one I place the truck to have front wheels on the top of the hill and not on the ice. At this moment rear wheels slide. The second test is the invert situation. I placed rear wheels on top and the front one on the ice. The rear one seem already sliding. Is it normal ? For the second test I should hope the front slide because it is one ice. I would like to know if it possible I have problem with automatic hub lock.
Thank you
Thank you
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I did the test in a underground parking but I didn't hear or feel anything. I stop the truck, I put it in low range ( electrical switch) a beging to go forward an I turn to maximum I can. At this moment the truck run normally without any sound
It seem is not working correctly. What is the problem. I have a other little problem with this truck. I have difficulty to change the position of air blower in the truck. (To push air un windsheeld on on feet). A person tell it have a problem of this type with is F250. The person have this problem and a problem with automatic lock. The relation between the problem seem to be a vacum pump who engage the lock. Can it be my problem?
Thank you
It seem is not working correctly. What is the problem. I have a other little problem with this truck. I have difficulty to change the position of air blower in the truck. (To push air un windsheeld on on feet). A person tell it have a problem of this type with is F250. The person have this problem and a problem with automatic lock. The relation between the problem seem to be a vacum pump who engage the lock. Can it be my problem?
Thank you
Post Fiend
Joined: Dec 2001
Posts: 10,562
Likes: 4
From: South Jersey
The 4wd and the air flow are both controled by vacuum, I would start looking for a vacuum leak.
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If someone have information about that? (circuit, location etc) I locked in Haynes manual an I didn't find any thing about the vacuum pump.
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Post Fiend
Joined: Feb 2003
Posts: 6,940
Likes: 2
From: Eastern WA
You're not gonna find a vacuum pump on the Ranger. Was the F-250 by chance a diesel?
Anyway, start at either one of the hubs, at the firewall, or on the engine (#1 choice) and find a vacuum line. Follow it around looking for a disconnected fitting(s), lose connection(s), or damaged hose(s). Simply look at all hoses. You can also test for vacuum at the hubs. I'm not sure if the hubs need vacuum to be engaged or disenaged but my guess would be vacuum is needed to engage. You can test for this with the engine running, 4WD engaged (then disengaged), and just pull a line and see if there is vacuum. Place your finger over the end of the hose to test.
Anyway, start at either one of the hubs, at the firewall, or on the engine (#1 choice) and find a vacuum line. Follow it around looking for a disconnected fitting(s), lose connection(s), or damaged hose(s). Simply look at all hoses. You can also test for vacuum at the hubs. I'm not sure if the hubs need vacuum to be engaged or disenaged but my guess would be vacuum is needed to engage. You can test for this with the engine running, 4WD engaged (then disengaged), and just pull a line and see if there is vacuum. Place your finger over the end of the hose to test.