Results 1 to 16 of 16

Thread: New here looking for some advice

  1. #1

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64

    New here looking for some advice

    Hello! I have a 1990 MM manufactured Aug of 89. RWD manual Trans. 4g64 2.4l SOHC 8 valve engine. Iv rebuilt the top end as it had a blown head when I purchased It for 500$ Id like to keep my posts in the proper channels where would I post for a oil leak and some intermittent CEL trouble? The truck runs and drives fantastic since iv put everything back together. I came here looking for advice with the 2 remaining issues. I am a mechanic and electrician by trade, iv never delved into engines until now. Im quite proud at what iv accomplished on this truck so far but finding any good information on these trucks is quite hard and my hanes manual does not cover what I am dealing with now. Im new to forums so any advice there aswell would be appreciated. Thank you all for your time upon reading this.

  2. #2

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    6,059
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Hi and welcome to mightyram. OBD1 is hard to get error codes from (I'm not sure if you can read stored codes) but if it's intermittent, it could be something like an O2 sensor going in and out of it's prescribed voltage range. Nice work on resuscitating the truck BTW. $500 is a fair deal if you can DIY wrench on it.
    support the forum that supports you - join and donate to MightyRam50.Net today! donations unlock the edit function

  3. #3

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    Yeah iv had a hard time finding anybody who even has an obd1 scanner. When it does come on I can give it a quick hard throttle bump and it will go away (out of gear or in gear, dead stop idle or in motion) but it doesnt even come on daily, monthly, weekly. Seemingly just whenever it feels like.

  4. #4

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    1,209
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    you dont use a scanner on the obd1, you just bridge the contacts with a paperclip and count the flashes

  5. #5

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    6,059
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    ^ it's old code retrieval that will be the problem. If it's glitching while reading the codes then they'll know what it is (or isn't...) doing.
    support the forum that supports you - join and donate to MightyRam50.Net today! donations unlock the edit function

  6. #6

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    1,209
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    Not at all, the ECU memory can be checked using a multimeter, I'm not sure on the logic behind when a code is stored or not, but I would think if you switch the engine off when it appears it will be retrievable.


    IMG_20201019_202711.jpg
    IMG_20201019_202748.jpg
    IMG_20201019_202841.jpg


    Even if you can't get a code, there's only 13 things that can cause a code. Half of them can be improved by cleaning the sensor (and you may as well check it's working while you have it out, most of its in your workshop manual)

    When it goes away when you punch the gas, that's exactly what my Ute does, suggest cleaning air flow sensor and manifold pressure sensor to start with

  7. #7

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    1,209
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    as for the oil leak. Welcome to the world of Mitsubishi engines!!! haha

    Where does the leak appear to be coming from?

  8. #8

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    Thank you ill keep my meter with me in the cab. When it starts doing it i wont give it gas and just idle off to the side and see what I can pull. Those documents you linked are helpful. As far as the oil leak goes I took the Front catch pan off the underside And removed my timing cover yesterday morning. Its definitely full of oil, on my timing belt and balancing belt. It runs out of my timing cover and down the large bolt just next to the oil filter. Maybe a crank seal or an oil pump im thinking? Not exactly sure. I cleaned all the old oil up and ran it for a few minutes but didnt see it seeping or spurting out anywhere specific. Just know its coming from under the timing cover for sure.

  9. #9

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    Quick update, i replaced the crank oil seal it was definitely leaking. I have a feeling the front cover gasket and the two balance shaft seals will probably be in the same state. Will have to order those parts. Also going to be soldering the oil pressure sender wire and connector, found mine was severed. Also my 1990 mighty max has a broken timing cover. Is my 8v 2.4l sohc 4g64 a 1g or a 2g? Im looking for some oem replacement parts and iv found a few on some DSM tuner sites but they are for EVOs and GSXs its all seperated into 1g, 2g, 6 bolt, and 7bolt parts. As far as I can tell alot of 4g64 and 4g63 parts are very very similar.

  10. #10

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    6,059
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Easy way to tell what generation the engine is - look at the front profile of the oil pan (mounting edge that bolts up to the oil pump housing) If it's straight, it's a 1G - curved is a 2G
    support the forum that supports you - join and donate to MightyRam50.Net today! donations unlock the edit function

  11. #11

    Array
    Status
    Offline
    Join Date
    09-26-2014
    Posts
    494
    Location

    Ca
    Vehicle

    1993 Dodge Ram 50
    Engine

    4G64
    ^^^
    Please do help , pictures ?? of the oil pan & timing cover
    Thx
    Last edited by claych; 11-10-2020 at 12:24 PM.

  12. #12

    Array
    Status
    Offline
    Join Date
    09-26-2014
    Posts
    494
    Location

    Ca
    Vehicle

    1993 Dodge Ram 50
    Engine

    4G64
    .....

  13. #13

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    6,059
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    DSM Tuners has a good thread with images comparing the differences between the 6 and 7 bolt/1G vs 2G engines - https://www.dsmtuners.com/threads/6-...-block.412359/
    support the forum that supports you - join and donate to MightyRam50.Net today! donations unlock the edit function

  14. #14

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    Sorry for not replying sooner gents, im an industrial mechanic and electrician by trade working on getting my Journeymens license so iv been quite busy. I will post some pictures this weekend. ��

  15. #15

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64

  16. #16

    Array
    Status
    Offline
    Join Date
    10-17-2020
    Posts
    16
    Location

    Greenville SC
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    I tried posting some pictures but it comes up blank. I did find out the erratic CEL and limp mode were due to a TPS sensor and IAC. I replaced both no
    more CEL

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
  •