Reading 3FE engine codes at home (2 Viewers)

[theside00]

TonKota were do wheel around spokane maybe we can hook up for a trail run or something. I am down here in moscow for school.

 

[tonkota]

When I get the Pig running I can go wheel then, but I need the 62 to stay clean since I rely on it. Vandal huh? I go to school at EWU. If you are up this way let me know and we can get together.

 

[Mark W]

Correction the hole is after the cats and right before the connection that goes to the muffler. I am thinking I need to fix the hole for everything to be cleared.

Nope. nothing after the O2 sensor matters. Well, assuming that the cat is not clogged anyway. But holes after the cat never matter.


Mark...

 

[tonkota]

you said but holes! he he he!

oh, and I don't know if you saw this:
http://www.steelnthings.com/3fetrouble.htm

 

[theside00]

We dont have to go that hard wheeling since mine is my DD also and the only way I can get home. I did mine in park and it seemed to work but I will try it in neutral and see if it is different. And I am thinking that I need some new O2 sensors (that is going to hurt the old wallet).

 

[PabloCruise]

I hope these help - from my '88 FSM:

 

[PabloCruise]

And the acutal Codes themselves:

 

[PabloCruise]

Glad those scans are helping folks!

 

[andhop72]

Glad those scans are helping folks!

They just came in handy for me thanks PabloCruise.

 

[PabloCruise]

They just came in handy for me thanks PabloCruise.

Glad to hear it!

 

[moiremusic]

 

[ocinataS]

Glad those scans are helping folks!

Thank you

 

[XRayFish]

Very helpful
Cheers mate

 

[Gringo]

I hope these help - from my '88 FSM:

Thanks for posting those three pages. I printed them out and was able to get my codes. 25 and 26. Now the hunt begins!

 

[PabloCruise]

Good luck @Gringo

 

[DuxTom]

Maybe awaken an old thread here… got a check engine light driving home a new to me 88 FJ62. It appeared 5 miles after I threw in 10 gallons of 92 non ethanol. Previous owner had been consistently running 87 ethanol.

I did the above procedure w/ a jumper wire at the firewall diagnostic terminal and got a code “71”. Thoughts? Likely related to the octane change? Thanks!

-Tom

 

[red66toy]

Maybe awaken an old thread here… got a check engine light driving home a new to me 88 FJ62. It appeared 5 miles after I threw in 10 gallons of 92 non ethanol. Previous owner had been consistently running 87 ethanol.

I did the above procedure w/ a jumper wire at the firewall diagnostic terminal and got a code “71”. Thoughts? Likely related to the octane change? Thanks!
View attachment 3826675
-Tom

I had this issue and cleaning the EGR valve helped a lot I do rarely get it still during certain driving scenarios but it goes away. The EGR systems in these trucks are getting very old. It might be worth going through the checklist to verify function of each of the EGR related components.