# ECU repair **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** pickup, mitsubishi\ **Created:** [December 24, 2022, 6:38pm UTC](https://community.cartalk.com/t/ecu-repair/188126 "2022-12-24T18:38:27Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![michaelgarrity\_183240](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@michaelgarrity\_183240](https://community.cartalk.com/u/michaelgarrity_183240)\ **Post date:** [December 24, 2022, 6:38pm UTC](https://community.cartalk.com/t/ecu-repair/188126/1 "2022-12-24T18:38:27Z")
I have a 1994 Mitsubishi RHD. The ECU needs to be repaired. Does anyone know of a repair shop? I do not have a schematic. Replacement units are discontinued. Thanks in advance. Mike. ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [December 24, 2022, 6:48pm UTC](https://community.cartalk.com/t/ecu-repair/188126/2 "2022-12-24T18:48:25Z")
You would probably be better off buying a new car. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [December 24, 2022, 6:50pm UTC](https://community.cartalk.com/t/ecu-repair/188126/3 "2022-12-24T18:50:15Z")
This is one of several companies that rebuild ECUs: [https://siaelec.com/?s=mitsubishi&post\_type=product](https://siaelec.com/?s=mitsubishi&post_type=product) (Hint: Google is your friend. šŸ˜‰) ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [December 24, 2022, 6:52pm UTC](https://community.cartalk.com/t/ecu-repair/188126/4 "2022-12-24T18:52:10Z")
> **[Can You Fix Your Car's ECM by Yourself? ā€“ CarComputerExchange.com](https://carcomputerexchange.com/blog/diy-fix-car-ecm/?campaign=753039094&content=544173225271&keyword=&gclid=EAIaIQobChMIybGq9vWS_AIVUCOtBh1LtATrEAAYAyAAEgKfHPD_BwE)** > > Need a replacement ECM?Ā  We sell preprogrammed ā€œplug and playā€ engine computers (ECMs, TCMs, and PCMs) for all makes and models!Ā  We only sell OEM parts that are GUARANTEED to work with your vehicle. Order today and itā€™llĀ ship within... Tester ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [December 25, 2022, 2:13am UTC](https://community.cartalk.com/t/ecu-repair/188126/5 "2022-12-25T02:13:21Z")
> [@michaelgarrity\_183240](#): > > I have a 1994 Mitsubishi RHD. All I can offer is my condolences and sympathy. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [December 25, 2022, 3:09am UTC](https://community.cartalk.com/t/ecu-repair/188126/6 "2022-12-25T03:09:41Z")
> [@old\_mopar\_guy](#): > > You would probably be better off buying a new car. $30,000 for a new car or $100 for a used engine ECU? How much dirt, gravel or trash can be loaded into a new car? > [@PvtPublic](#): > > All I can offer is my condolences and sympathy. Canā€™t you offer money or a replacement computer? Most people on this planet donā€™t enjoy the same standard of living as people in the U.S. ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [December 25, 2022, 11:37am UTC](https://community.cartalk.com/t/ecu-repair/188126/7 "2022-12-25T11:37:03Z")
> [@Nevada\_545](#): > > Canā€™t you offer money or a replacement computer? Nope. Even relatives only got greeting cards from the dollar store this year šŸ˜¢ ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [December 25, 2022, 12:30pm UTC](https://community.cartalk.com/t/ecu-repair/188126/8 "2022-12-25T12:30:13Z")
You are more generous, I just text. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [December 26, 2022, 5:42pm UTC](https://community.cartalk.com/t/ecu-repair/188126/9 "2022-12-26T17:42:09Z")
Normally Iā€™d say it probably isnā€™t the PCM, but this gen of Mitsubishi PCM had an issue with the ground run on the circuit board. IIRC, you would get 5 codes, I donā€™t remember exactly which codes were in that 5, but I do remember there were 5 of them. The nature of the repair would make that run more robust so it never failed again. This was a case of the repaired boards being superior to a new board. Edit: this was for the 4 cylinder models, not sure about v-6ā€™s but I donā€™t recall that PU coming with a v-6 option. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 27, 2022, 10:51pm UTC](https://community.cartalk.com/t/ecu-repair/188126/10 "2022-12-27T22:51:01Z")
I own a Corolla of similar vintage and always wondered the options available if ECM fails. So Iā€™ll be carefully following what happens on this thread, hope you will keep us informed. I think my first choice would be to purchase a used ECM obtained from the same make/model/year/configuration as my own car, from a wrecked car, car parts recycler, pick and pull, etc. If nothing available, then Iā€™d try the companies that rebuild them. fyi Summit Racingā€™s website sources replacement ecms for some cars. One problem youā€™ll have though is your make/model is probably not as widely sold as say a toyota pickup. Note: One caution, if your state requires emissions testing, that may throw a monkey wrench into any replacement plan b/c while replacement ECM may work ok, it may not produce the required emissions levels.