obd1 codes found
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Elder User
Joined: Oct 2013
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From: Independence
obd1 codes found
Hello again all i did a code search on my truck and this what it said: first of course my truck is a 88 with a 5.0 here are the codes: koeo 84,33 next is koer: 24,43,44 now i can tell you that my smog pump is gone except for, the tubes that are on the back of the heads no vacuum lines to the TAD and TAB solenoids but are still plugged in. And i replaced the vacuum lines with silicone rubber ones? I dont have any idea on how to fix any of these codes at all also i did replace the egr vacuum solenoid and that didnt help for the egr codes. Im very frustrated!! At it im running out of ideas? And of course i dont have alot of the tools like, a vacuum pump and such. Any advice you can give would be helpful. My egr valve used to open when it was in the driveway and you would give it gas at the, TB but now it doesn't thanks again guys, I thought i had this fixed but I guess not!!!
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
If your smog system was not deleted properly (open vents/check valves to the exhaust), that could definitely mess with your oxygen sensor. Otherwise I'd expect your O2 sensor has finally died and should be replaced.
As far as EGR goes, you should start diagnostics by applying vacuum directly to the valve and seeing if it opens (engine should start running significantly worse with the valve open at idle).
As far as EGR goes, you should start diagnostics by applying vacuum directly to the valve and seeing if it opens (engine should start running significantly worse with the valve open at idle).
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Elder User
Joined: Oct 2013
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From: Independence
If your smog system was not deleted properly (open vents/check valves to the exhaust), that could definitely mess with your oxygen sensor. Otherwise I'd expect your O2 sensor has finally died and should be replaced.
As far as EGR goes, you should start diagnostics by applying vacuum directly to the valve and seeing if it opens (engine should start running significantly worse with the valve open at idle).
As far as EGR goes, you should start diagnostics by applying vacuum directly to the valve and seeing if it opens (engine should start running significantly worse with the valve open at idle).
Back there that was part, of the smog pump system has a plastic bag shoved in there! Dumb I know! And that pipe in the exhaust thats hooked to, the other hose needs to be welded shut! Im trying to get that taken care of asap! Maybe thats what fried the o2 sensor? If thats what it is! Also i dont know what to do about the ACT sensor? Got a code for that also!! Thanks leadhead!!!
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Elder User
Joined: Oct 2013
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From: Independence
Ok here is what i did this morning. Started the truck, put a small pc of vac tube to EGR sucked on the hose and the truck stalled, did it several times. Stalled every time also i grounded the green wire to battery short periods, it stalled every time like it was supposed to so obviously the egr is working manually at least so i cant figure out why its not opening, when i drive it? Thats why i guess im getting code 33 and 84 my next question is how do i check the red wire on the EVR solenoid for voltage and make sure it's not grounding etc. thanks again guys!!
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
The red wire goes to a lot of places. If the red wire is grounded the truck will not start.
The source of the red wire is the ECC power relay with a brown bottom.
That said I do not know what type of code you got as you said nothing about CM codes. So I do not know if codes you posted are KOEO or CM codes.
If they are CM codes then they will be in memory until they are cleared or you have 60 start ups.
The source of the red wire is the ECC power relay with a brown bottom.
That said I do not know what type of code you got as you said nothing about CM codes. So I do not know if codes you posted are KOEO or CM codes.
If they are CM codes then they will be in memory until they are cleared or you have 60 start ups.
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Elder User
Joined: Oct 2013
Posts: 505
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From: Independence
The red wire goes to a lot of places. If the red wire is grounded the truck will not start.
The source of the red wire is the ECC power relay with a brown bottom.
That said I do not know what type of code you got as you said nothing about CM codes. So I do not know if codes you posted are KOEO or CM codes.
If they are CM codes then they will be in memory until they are cleared or you have 60 start ups.
The source of the red wire is the ECC power relay with a brown bottom.
That said I do not know what type of code you got as you said nothing about CM codes. So I do not know if codes you posted are KOEO or CM codes.
If they are CM codes then they will be in memory until they are cleared or you have 60 start ups.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Scrobbie, I know you have encountered problem after problem. Have you pulled the PCM to inspect for leaking capacitors?
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Elder User
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From: Independence
Well not recently but remember man i had them replaced like a year or 2 ago. I just wished i could figure this crap out, it seems to run well when driving down the road! It just idles rough i just hope on top of all this i hope my lower intake gasket isn't leaking causing the lean condition im getting on the left side! But that could be because my air injection system is not removed correctly either i just dont know as much about efi systems as carb systems!! Thanks again for all your guys help maybe sooner or later ill get it solved! I hope cheers all
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Elder User
Joined: Oct 2013
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From: Independence
No need to be sorry man im sure all of you have better things to do besides help the same guy with the same problems all the time lol thanks again!!
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Elder User
Joined: Oct 2013
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From: Independence
I would agree but i dont know what to do with the non switching o2 sensor i mean the smog pump delete i should b able to fix that one at least
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Elder User
Joined: Oct 2013
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From: Independence
ok that makes sense thanks man! Your right i did unplug vacuum lines to check the egr valve. Thanks again!