1991 1992 3FE Specific MUD References (1 Viewer)

[proteolytic]

Lot of folks lately picking up 3FEs lately (cheaper than FZJ80s I suppose) and having trouble properly fixing or maintaining certain things specific to these trucks. I put together a list of common 3FE specific MUD references and were not necessarily found in the general FAQs. Anything else that should be added?

Before attempting one of these jobs on your own it would be recommended reading these over to avoid any common mistakes.

3FE Tune Up
General Tech - 3FE Tune Up Info - https://forum.ih8mud.com/resources/3fe-tune-up-info.90/

3FE Belt Routing
General Tech - 3FE Belt Routing - https://forum.ih8mud.com/resources/3fe-belt-routing.95/

3FE Diagnostics
General Tech - 3FE EFI Diagnostics - https://forum.ih8mud.com/resources/3fe-efi-diagnostics.89/

Air Flow Meter (AFM) - commonly mistaken for MAF sensor - DO NOT REMOVE THE TWO SCREWS
Equivalent from 1993 v6 Camry or 1992-1993 ES300 or 1988 Supra (7MGE)
1991 MAF Interchange - https://forum.ih8mud.com/threads/1991-maf-interchange.1086795/

EFI Relay Issue (common problem for ‘91-’92 FJ80s - truck dies because relay overheats)
Replace EFI relay with Camry relay (Toyota part#: 28300-16010) and/or wire to cabin
Keeps burning EFI main relays - https://forum.ih8mud.com/threads/keeps-burning-efi-main-relays.520000/

Oil Galley Plug - if it hasn’t been repaired it is a good idea to at the very least regularly check on it
Oil Galley Plug Fixes - https://forum.ih8mud.com/threads/oil-galley-plug-fixes.346362/#post5103955

Side Cover Gasket
OEM part number: 11253-61010
Pushrod Cover Gasket replaced W/pics - https://forum.ih8mud.com/threads/pushrod-cover-gasket-replaced-w-pics.289325/

Oil Pan Gasket
OEM part number: 12151-61011
GOT YELLOW! 3FE oil pan gasket - https://forum.ih8mud.com/threads/got-yellow-3fe-oil-pan-gasket.295711/
Oil pan Gasket on the 3fe - https://forum.ih8mud.com/threads/oil-pan-gasket-on-the-3fe.1171551/

Valve Adjustment
right way to do it wrong - https://forum.ih8mud.com/threads/right-way-to-do-it-wrong.276106/#post4300965
3FE valve adjustment - https://forum.ih8mud.com/threads/3fe-valve-adjustment.78672/
3FE Valve Adjustment - https://forum.ih8mud.com/threads/3fe-valve-adjustment.615411/

Cold Start Injector Cleaning
Clean your cold start injector - https://forum.ih8mud.com/threads/clean-your-cold-start-injector.395658/

3FE Timing
Help on adjusting timing / '91 / 3FE - https://forum.ih8mud.com/threads/help-on-adjusting-timing-91-3fe.1096511/#post-11957988

Cruise Control
Diagnostics: Cruise Control OBD - https://forum.ih8mud.com/threads/cruise-control-obd.545437/
Speed Sensor Fixes:
Hall Effect Fix (Inexpensive, requires soldering and potting of sensor)
cruise control trouble - https://forum.ih8mud.com/threads/cruise-control-trouble.586112/
Hall Effect Sensor Replacement
fj80 cruise control speed sensor - https://forum.ih8mud.com/threads/fj80-cruise-control-speed-sensor.1044131/

3FE Desmog
1991 3F-E De-Smog Performed - https://forum.ih8mud.com/threads/1991-3f-e-de-smog-performed.315482/

 

[OGBeno]

Nice job.

 

[DesertCruiser80]

This is great! Even for someone who has had a 3FE powered cruiser for a couple years.

 

[ColoradoBoy]

Very Sweet!
Thanks for taking the time to create an informational bundle.
I had a tough time figuring out a faulty FPR and fuel pump...

Hard to start when weather and vehicle are hot- SOLVED

Been half-heartedly chasing this issue for awhile, but now I've had it! Gotta get this issue fixed. Broke out the FSM, bought a fuel pressure gauge set, and went to work. Started with pulling the cold start injector (FSM, pages FI-52-53) I cleaned it up not long ago, but figured I would make...

forum.ih8mud.com

Hopefully could help someone.