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  1. V

    FJ62 3FE EFI MAIN RELAY

    I settled on the TPS because when I jumpered the test box in order to get the diagnostic code, it resulted in code 51. I assumed if it was the gear selector switch input that it wouldn’t crank at all, and assumed ac switch input had nothing to do with getting it to start.
  2. V

    FJ62 3FE EFI MAIN RELAY

    Checking the resistance between idl and e2 pins with 0.0303” feeler gauges between the throttle lever and throttle stop screw, I had an open circuit (infinite resistance). I adjusted the TPS until I started getting a resistance measurement which was 40 ohms. But then I read about the same...
  3. V

    FJ62 3FE EFI MAIN RELAY

    I found some feeler gauges, so I’m about to start checking my TPS sensor. My emissions control sticker says California compliant, and tps diagnostics says to apply vacuum to tps sensor for California models. What is the beat way to go about applying a vacuum? How big a difference does it make?
  4. V

    FJ62 3FE EFI MAIN RELAY

    it was just a broken wire. I spliced it and got 12v through the connector now. My question now is, will code 51 prevent it from starting or just make it run rough? I don’t have any feeler gauges for checking the resistance measurements specified in the Haynes manual. I was wondering if I...
  5. V

    FJ62 3FE EFI MAIN RELAY

    Code 51 = switch condition signal = no throttle position sensor, gear selector sensor, or ac signal to ECM It will turn over, but won’t crank, so I’m guessing throttle position sensor? Any further help, would be greatly appreciated!!!
  6. V

    FJ62 3FE EFI MAIN RELAY

    A little follow up: I got the check engine light on now when ignition switch is on position. Found a bad connection at the battery positive post (3 pronged pigtail connector - the 1 horizontal pin (the 2 vertical pins checked ok). Now I will try to run a diagnostics check. Will post results...
  7. V

    FJ62 3FE EFI MAIN RELAY

    I thought I had a bad fuel pump, but before I dropped the fuel tank, I checked the EFI Main Relay. I never get 12volts from the ECM to the coil for the EFI Main Relay (checked voltage at the pig tail connector red wire and back to negative battery terminal). I am checking it with ignition switch...
  8. V

    VCV Valve Operation

    That is a very thorough breakdown of how it works. Thank you for the time and effort. It seems the vcv is an almost insignificant piece of the vacuum puzzle though. Also, with my 3FE plumbed correctly it is still running like crap all of the sudden.
  9. V

    VCV Valve Operation

    In an attempt to better explain what I currently have vacuum hose wise: I have 2 hoses going from the air cleaner to the distributor cap and 1 going from the air cleaner to the throttle body, I have 2 hoses going from the vcv to the throttle body, 1 hose from vcv to the canister, and 1...
  10. V

    VCV Valve Operation

    My fj62, 3FE, just started running like crap and has all the signs of being vacuum related. While poking around at vacuum hoses, I noticed what I think is the VCV (directly above the "canister") had a small nipple with no hose connected. The only hoses I found dangling loose come from the...
  11. V

    fj62 water pump nightmare!

    Figured it out after several attempts. Studs and nuts in, oops forgot tensioner pulley bracket. At least I didn't take the alternator bracket off, so that side was more obvious.
  12. V

    fj62 water pump nightmare!

    In the middle of replacing the water pump and now I have forgotten which ones are studs and which are bolts if any. Do all 4 holes use studs? If so, I may have lost 1.
  13. V

    fan belts

    And that's an understatement
  14. V

    fan belts

    Does anybody have the part numbers for all 3 3FE belts?
  15. V

    No heat, core flushed. What is the thermostat o-ring P/N?

    My issue is different, but started with no heat in the cab. Changed thermostat with prerequisite breaking of bolts. Now I'm in process of replacing the water pump. A pic in progress, is all this really necessary? I'm used to Chevy or jeep water pumps that are a 1-2 hour job.
  16. V

    '85 FJ60 Engine Coolant not heating w engine running

    Not sure if this post fits this discussion: My 88 FJ62 is my daily driver (50+ daily miles M-F). The one thing I could always count on was a damn good heater. Until a week ago. Heater stopped blowing hot, then a few days later started overheating. I changed the thermostat after breaking 3 of the...
  17. V

    No heat, core flushed. What is the thermostat o-ring P/N?

    My 88 FJ62 is my daily driver (50+ daily miles M-F). The one thing I could always count on was a damn good heater. Until a week ago. Then it started overheating. I changed the thermostat after breaking 3 of the 4 bolts, but still no heat and still overheating. Has to be the water pump right...
  18. V

    3FE Fuel Supply Problem - I FIXED IT!

    I meant : No mechanical adjustment
  19. V

    3FE Fuel Supply Problem - I FIXED IT!

    I replaced my fuel pressure regulator and my 62 started right up, so that's a huge improvement. Now it idles around 2000 rpm. I know that's too high, but everything I read says idle is controlled by ECU and there's mechanical adjustment. If that is correct, what would cause high idle? And what...
  20. V

    3FE Fuel Supply Problem - I FIXED IT!

    Is there any chance that the fuel pressure regulator could also pressurize the fuel tank causing gas to overflow out of the filler hose? I'm having some of the same starting issues described in this thread except my problems are with cold starts. I'm hoping that a fuel pressure regulator...
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