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Posted

Hey everyone
I have a 1998 Hilux sr5 with push button 4wd,I recently got a bloke to replace the timing belt and water pump. After doing so the 4wd was stuck engaged. we played around with the vacuum hoses to get the ute home, but now we cant get it to engage at all.
When you push the button you can hear the reply click behind the dash. If you pull the sensor off the back of the transfer you can hear it click and again if you put it back on. we have pulled the wiring loom out and check for broken connections. The vacuum pump at the back of the transfer doesnt have any power or negative wires running into it...
The sensor at the front of the diff has a little bit of power but only just enough to turn the light on a test light.
Help please, ment to be going on a 4wd trip friday....


Posted

No, I'm getting very little if any...

Take it, I should pull the vacuum pump off and clean out?

 

Posted

It's not uncommon for vacuum lines to melt or become crushed.

Try and get your hands on a vacuum gauge so that you can have an idea of how much it is pulling at different points. In most cases you will want somewhere in the range of 20-30 inHg.

How does your brake pedal feel, is the booster still working fine?


Posted

Brake pedal is perfect, i also noticed that the front tailshaft is always engaged?

  • 3 years later...
Posted (edited)

Hi bringing up an old thread but did anyone find the issue???

Mine is very simular transfer case working  clicking in left kick panel but no power to the vacuum switching valve. 

Vacuum before the valve but not after

Therefor no locking of the front wheels

Can someone please help me im puzzled.

Have taken off transfercase and cleaned up was abit yuk.

Have a 1998 ln167 sr5 hilux with add 4wd set up

Edited by Herlux
Add more details
Posted
20 minutes ago, Herlux said:

Hi bringing up an old thread but did anyone find the issue???

Mine is very simular transfer case working  clicking in left kick panel but no power to the vacuum switching valve. 

Vacuum before the valve but not after

Therefor no locking of the front wheels

Can someone please help me im puzzled.

Have taken off transfercase and cleaned up was abit yuk.

Have a 1998 ln167 sr5 hilux with add 4wd set up

 

  • 3 weeks later...
Posted

Did you get an answer or fix for it cobber ? Got the same issue myself 

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