Results 1 to 4 of 4

Thread: 91 mighty max surging idle and power loss under throttle

  1. #1

    Array
    Status
    Offline
    Join Date
    02-27-2014
    Posts
    1
    Location

    greensboro n.c
    Vehicle

    1991 Mitsubishi Mighty Max
    Engine

    4G64

    91 mighty max surging idle and power loss under throttle

    So I am new to forum but this is my second truck. CEL keeps coming on and it will begin to surge.. then under throttle it will cut out like I just took my foot off the gas. It has new plugs wires cap rotor and fuel filter. My buddy at oreilly let me try on a maf, and a tps. Neither one helped. As soon as it gets to temp it will surge. But not all the time. Yesterday it ran fine. Im lost. Please help!

  2. #2


    Array
    Status
    Offline
    Join Date
    01-16-2014
    Posts
    470
    Location

    Las Vegas, NV
    Vehicle

    1991 Mitsubishi Mighty Max
    Engine

    4G64
    "Shotgunning" is known as throwing parts at your vehicle without diag.

    If your CEL is on, get the code and fix the problem. Its telling you what is wrong with it.

  3. #3

    Array
    Status
    Offline
    Join Date
    03-08-2014
    Posts
    10
    Location

    United States
    Vehicle

    1991 Mitsubishi Mighty Max
    Engine

    4G64
    I have similar problem but mine sounds like my 4g64 is cammed out at idle.
    however I know my fuel pump is going out and I feel like its not giving it enough fuel
    so I'm replacing it tomorrow if the weather holds up.

  4. #4

    Array
    Status
    Offline
    Join Date
    03-08-2014
    Posts
    10
    Location

    United States
    Vehicle

    1991 Mitsubishi Mighty Max
    Engine

    4G64
    So I think I figured out my cam like problem and loss of power.
    my cat in my exhaust was clogged I guess so you might try beating on yours with a wrench or something to see but I just unbolted it and removed the back half of the exhaust and it ran 10x better.

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •