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Zexel tics pump issues

Discussion in 'General Discussion' started by camp9, Nov 20, 2019.

  1. camp9

    camp9 Registered User

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    I have a 1999 Mitsubishi fuso fe that is having ip problems. It has a zexel tics pump on a 3.9L Mitsubishi. It's very hard to find any info on these pumps and from what I've found out it cost more to have them worked on than what my truck is worth. I'm pretty good at repairs but being it's all electronic I'm at my end. Wondering if anyone has knowledge of this system? Or even if I can change it out of a older mechanical IP? Thanks.

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  2. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    What problems are you having?
     
  3. Garbage_Mechan

    Garbage_Mechan Garbage Mechanic

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    I actually scrapped an Isuzu W5 out of my fleet once because of this same issue. If I recall the pump was going to cost 8-10k!
    Info on these import trucks is hard to find. Don’t give up till you dig a while. Maybe a used pump or even running engine.
     
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  4. camp9

    camp9 Registered User

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    Gallops at every rpm. Sometimes wants to run away but will shut off with key so not a true run away. Sometimes pure black smoke and next time I run it no excess smoke. Only time it doesn't gallop is when I pull the emergency shut off part way. I've been told that everything it's doing is classic tics electrical issues, and most likely it's the rack position control sensor. I took it off last week and checked wires and continuity. Apparently there's a voltage range that makes this sensor work in conjunction with the throttle and govenor. While I had it apart I could take a curved needle nose pliers and manually move it he pin and find a position to make it idle normally. I'll post a pic of the sensor

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  5. camp9

    camp9 Registered User

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    Thanks, thinking a used pump might be the way to go. Crazy part is I can get it he engine to run perfect except for the higher rpm when I pull the emergency shut off cable. I'll try to post a video
     
  6. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    I know someone who may be able to help, I’ll run your issues by them and see what can be done.
     
  7. camp9

    camp9 Registered User

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    That would be great. I've got a good video of what it's doing that I've been trying to post but it won't take it. I'll keep trying
     
  8. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Upload it to YouTube and copy the link here
     

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