Koeo stored codes 34 and 41 (no koer codes)

HAPLO

MEMBER
1992 FORD E-SERIES VAN
7.5L
V8
2WD
AUTOMATIC
66,000 MILES

Reported check engine light was on, so I went to go pull the codes. 11 for the continuous (no issues) 34 and 41 for stored codes. Didn't come up on the KOER test.

Saturday, March 23rd, 2019 AT 10:55 AM

4 Replies

JOETECHPRO

MECHANIC
705 POSTS

Hey HAPLO,

We will need the full fault codes in the form P---- (eg. P1234)

The codes will have a letter, P is for power-train, and then four numbers.

Please reply with these codes and we will try and give you some further information.

Regards, Joe

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Saturday, March 23rd, 2019 AT 1:43 PM

KEN L

MASTER CERTIFIED MECHANIC
47,256 POSTS

Hello,

This is an OBD1 car so the codes are correct. EGR valve and lean which makes sense if the EGR is stuck open. I would remove the valve and use this video to test it.

https://youtu.be/DqUCbbKdWf4

Please run down this guide and report back.

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Saturday, March 23rd, 2019 AT 4:04 PM

HAPLO

MEMBER
2 POSTS

Good video! Thanks for the help Ken. Got about 80 miles on it now with no check engine light. Appointment for smog check next week. If you don't hear from me again, no news is good news. :)

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Saturday, March 23rd, 2019 AT 9:56 PM

JOETECHPRO

MECHANIC
705 POSTS

Hey HAPLO,

Sorry I thought you were dealing with an OBD2 van originally.

If you can let us know if the EGR valve was the issue and what you did to fix eg. Replacement/cleaning it will help others with the same issue.

Glad to hear the check engine light is now off.

Regards, Joe

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Sunday, March 24th, 2019 AT 5:18 PM