4x4 not engaging on the fly
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#5
Originally Posted by CRF250rider1000
I thought only the electronically controlled one's were shift on the fly?????
That does not mean you should shift if the rears are spinning. That is when you have problems. As long as the front and rear wheels are turning the same speed, you can shift on the fly.
All in the owners manual.
Last edited by kingfish51; 12-29-2007 at 06:44 AM.
#6
Join Date: Dec 1997
Location: Windsor,Ontario,Canada
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Check fuse #23 in the Central Junction Box in the cab. Do you hear the SOTF relay click when you engage 4Hi If the relay is deffective it will not engage the t-case electromagnetic clutch
Check the maxi fuse #103 (30amp) in the battery Junction Box under the hood.
If it popped your t-case electromagnetic clutch will not work and the driveshafts will not sync up.
JMC
Check the maxi fuse #103 (30amp) in the battery Junction Box under the hood.
If it popped your t-case electromagnetic clutch will not work and the driveshafts will not sync up.
JMC
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#11
It sounds like an electronic issue (fuse?). My manual shift t-case will engage at speeds up to about 55-60mph. I rarely, if ever need to engage at that high of a speed, but it has done it when needed. Check the fuses and other electronic connections first, and make sure that you are turning the same speed front and rear (I.e. not spinning the rear tires, or running different gear ratios or tire diameters).
#12
Join Date: Dec 1997
Location: Windsor,Ontario,Canada
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All the Borg-Warner 44-06 part time t-cases have an electro magnetic clutch that will sync the front and rear drive lines so the t-case can engage at speed. If it is not engaging at speed the clutch is not engaging and spinning up the drive lines. It could be defective or it is not getting electrical power when it should. There is a relay that is responsible for supplying the current to the clutch. It is grounded by the GEM when 4x4 is requested. The relay is located under the oval cover on top of the dash. I cannot tell you which relay it is as I moved mine around in there. I can tell you that it has 4 wires; Dark Green/Light Green stripe, Brown, White /Light Blue stripe and Orange. When 4x4 is engaged power flows from the fuse through the Dark Green/Light Green striped wire to the Brown one. You should have 12v at the Dark Green/Light Green striped wire all the time. You should have 12 at the White /Light Blue striped wire when in RUN. The brown wire should have continuity to ground if not the clutch is defective or the circuit is open. Check the connector at the t-case for continuity. It is on the t-case extension housing. If the any of the power tests fail check the fuses again.
JMC
JMC