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"FYI" 1996 Daihatsu wouldnt go into 2x4 "Remedy"

Discussion in 'Daihatsu Hi jet' started by TRAX and HORNS, Nov 8, 2009.

  1. TRAX and HORNS

    TRAX and HORNS Well-Known Member

    Just got back from picking up a few trucks in Calif.The 96 S110 would not go into 2x4. It was stuck in 4x4. I looked at the front diff., followed the vacuum lines until I understood where they went and what they did. The vacuum that operates the 4x4 system wasnt pulling enough vacuum was the problem. Well, it was tied into the valve cover, lower fuel pump and then went to intake manifold. Which is wrong. It needs to be tied into intake manifold by its self. The line coming off the valve covers goes to lower fuel pump then T's off to intake manifold between carb. and intake manifold. There is a port between 1 and 2 cylinder on the intake manifold that the 4x4 vacuum line ties into. Once I figured that out all is good. If you have problems get a cold liquid refreshment take your time and follow the lines. Take note of the lines that have split at the ends and possibly leaking. I replace several lines after I figured out what was wrong. It was a simple fix but took about 5 hrs. to understand what and where how the system works. I will confess that Leon Barnett at "Daihatsu Help" had a hand in helping me. This guy is good and will put you in the right direction for those that own Daihatsu's.
    PS. It is possible to actuate the system by getting some new vacuum line and hooking it up to ports on front diff. and trans. to make 4x4 engage and disengage. Just got to suck really hard. By doing this your tongue may or may not get sore. My next tool purchase is a vacuum pulling tool. LOL
  2. Kokamo

    Kokamo New Member

    Terry, this is nearly the exact same thing I just went thru on the little 91 Hi-Jet. I didn't find anything hooked up wrong, but I did find some cracked and broken vacuum lines. Replaced then with new and voila!!! Problem solved!

    Good info fo-sho!

  3. TRAX and HORNS

    TRAX and HORNS Well-Known Member

    I pulled 1/2 doz.+ hoses off their ports just to try and figure out what was going on and found that 90 % of the ends that slip on ports were cracked. I went to the parts store and bought a 20ft. of vacuum line and replaced them. Could they have put anymore vacuum lines on these puppy's. Them vacuum lines will eat your lunch sometimes. Anyway I got this truck all serviced and purring like a kitten. On to the next project.
  4. Yes fun with Vac lines. I have noticed when you shut the truck off and there is no longer any vaccumm on mine it goes into 4wd until you start it, and then it disengages with the truck in 2wd.
  5. TRAX and HORNS

    TRAX and HORNS Well-Known Member

    10/4 I noticed that also when I was jacking around with the vac. lines. And then there is that black plastic box between the battery and rear tire. That is a holding tank for vacuum pressure. Pretty cool. Ive been messing with these trucks for a good while and continue to find things that are so simple but yet a puzzle to figure out sometimes. Keep me young.
  6. Yes for sure I have learnt alot also. I have a black vaccumm canister behind the front passneger wheelwell. Mine is a 1992 S83P. I never noticed anything that far back on mine.

  7. JMM

    JMM Member

    I'm replying to a THIRTEEN YEAR OLD THREAD to say that, in terms of hours saved and cusses not cussed, this is the most valuable post I've found here yet (and I've found a LOT of them). For some unknown reason, my 4WD stopped working and this was the cure. Seems my vacuum lines were routed incorrectly per the description above. I corrected them, per the solution above, and 4wd started working again.

    These trucks' vacuum systems are like arcane druid witchcraft. I don't know if TRAX and HORNS is still even on the site, but anyone who can decipher them is a high priest of HiJet. God Bless.

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