code 41 and 34

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Apr 21, 2018 | 04:21 PM

#16

waine5

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From: Nashville

New O2 new codes. I don't think it should work that way. smh Now the codes are 21, 24, 25, 34, 41, 77. 13 is gone. It never did ask me to rev.

Apr 21, 2018 | 05:23 PM

#17

Franklin2

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From: Virginia

Codes 21 and 24 are probably because you did not let the engine warm up enough. Code 25 is being caused by not doing the goose test, just like code 77 is. 41 is your old O2 code that is still there, you need to make sure the engine is fully warmed up for that also. Did you figure out that mystery wire?

Apr 21, 2018 | 05:31 PM

#18

waine5

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From: Nashville

Wire

Nope. Its in the photo. Its hot only when the Ignition is on. Im going to retest. I didnt get any codes on O or C tests.

Apr 21, 2018 | 05:55 PM

#19

vjsimone

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From: Somewhere n North America

Did you replace your O2 ?
The O2 wire runs behind the engine, from passenger side to drivers side, see page 46 of the EVTM.

How are you checking codes? What are you using?

Apr 21, 2018 | 06:38 PM

#20

waine5

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From: Nashville

Yes, just did it. 21 and 24 went away. I'll have to retest tomorrow and do the goose. I miss read the book. 10 means rev, I thought it meant done. Neighbors are having a dinner party on the patio and wife says, I have to put my toys away and play nice. They weren't happy with my idea of ambient back sounds of an old truck being worked on. It is running better and no surges. The rich smell is gone also. The wire to the old O2 was soldered to the exhaust manifold.

Last edited by waine5; Apr 21, 2018 at 06:46 PM. Reason: more info

Apr 21, 2018 | 06:46 PM

#21

vjsimone

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From: Somewhere n North America

Look around your Drivers side wheel-well (apron), is there a 3 wire connector there, purpleish, redish & yellow/whiteish ?

Apr 21, 2018 | 07:01 PM

#22

waine5

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From: Nashville

OBD1 code read from auto zone.

Apr 21, 2018 | 07:16 PM

#23

vjsimone

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From: Somewhere n North America

Quote:

Originally Posted by waine5

OBD1 code read from auto zone.

"I miss read the book. 10 means rev, I thought it meant done."

Yeah, that is where I was going with my question..

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Apr 21, 2018 | 07:22 PM

#24

Franklin2

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From: Virginia

I would pull that harness apart and see where that wire goes and see if you can find were it went. That is the computer harness, it's not good having loose wires in there.

Apr 21, 2018 | 07:25 PM

#25

waine5

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From: Nashville

Wire

This wire comes from under the fuel relay area. There is two. Yellow and green and black and purple. I agree with you.

Apr 21, 2018 | 07:30 PM

#26

Franklin2

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From: Virginia

You have a link to Gary's site with the 86 diagrams correct? Print that off, pull those wires out of the looms and have some quiet time to figure out what is going on.

Apr 21, 2018 | 07:44 PM

#27

waine5

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From: Nashville

Wire

Had it out there today. All I can think of that not in that diagram is it used to have cruise control and it went to that.

Apr 24, 2018 | 12:54 PM

#28

waine5

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From: Nashville

Okay. Done all things suggested. I even cleared out all codes and started fresh. * new O2, EGR, and EVP.... test R 44, 34 codes. Test

O and C both 11 codes. I fell like I'm 2/3s the way there.

Last edited by waine5; Apr 24, 2018 at 12:55 PM. Reason: correction

Apr 24, 2018 | 02:08 PM

#29

vjsimone

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From: Somewhere n North America

Code 34
sometimes the shaft on the EVP is to long.
measure the output.
shim the EVP as mall amout, re-measure, run self test, repeat if no improvement.