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Originally Posted by Mr. Pockets
I've said it a hundred times before - if there is a noticeable delay between your front wheels spinning and the rear wheels engaging, you have a problem. The original post in this thread is a good example. 5 seconds? That's huge. Even a half a second would still be significant.
I agree with Trevor - the culprit is most likely the transfer clutch itself. Don't stop at replacing the solenoid - replace the clutch as well.
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Yes Nick is right, any delay is not right.
But it won't be the clutch itself. The clutch is self-adjusting as is all the other clutches it the box. As they wear, they get pushed together just the same as new. It will either work, or not work, there is no middle ground.
Slow reaction to drive the rear wheels can be caused by;
1. Sticking C solenoid, (should post a code)
2. Sticking transfer spool valve. ( no code, replace assemble.)
3. Low line pressure.
4. Transfer pressure leaking out at the sealing rings, between the output shaft and the extension housing.( early models, rings were modified, but don't know when.)
The only way to tell for sure is to connect a pressure gauge to the port on the extension housing to see the pressure that is being applied. This will show if it is the 'C solenoid/Transfer valve assemble', as the pressure rise will be delayed. If the pressure rises fast but the clutch is still delayed, it is the sealing rings, leaking pressure to cause the delay.
Harvey.
