Help with some codes!!!!!!

[gooch06]

I have a 1990 LX 5.0 and just scanned my car with Actron code scanner. With the Key On Engine Running I'm pulling codes 94, 44, 33. With the Key On Engine Off I'm pulling 22, 85. I know these codes. The ones I'm confused with is the KOER Test. How do you fix a code 33, 94,44? Any help would be great.Thanks

 

[90mustangGT]

Well, your EGR isn't opening and the air injection system (SMOG PUMP CODE: air pump and lines that go to the H pipe and back of the heads) and the Canister purge is not working. The only drivability code I see is that if the EGR is opening and the computer thinks it's still shut, it could cause it to run rough and even stall. First see if the EGR will open by putting vaccume to it at idle, if the engine bucks or stalls then it is opening. If it isn't then replace the valve and clean the ports. Then check to see if the EGR system is opening or not. It should only open durring coasting or low throttle cruise.

 

[04sleeper]

Code 33:

When the code 33 is received during the KOER test, it means the EGR valve was detected as having opened during the test. If the code 33 is received during the KOER test, it is likely no vacuum supply runs to the EGR valve. Inspect the vacuum hose thatruns from the EVR to the EGR valve for restrictions, holes, and cracks. Check the vacuum hose that runs from the intake manifold to the EVR. If the vacuum hoses are okay, connect a vacuum gauge to the hose connected to the EGR valve. Repeat the KOER test. If the vacuum reading on the gauge is at least 1.5 inches of mercury, carefully insert a small screwdriver in one of the holes on the underside of the EGR valve. Work the EGR valve diaphragm up and down in an attempt to free any mechanical binding. Repeat the KOER test and check for the code 33.If the code 33 returns, connect a hand-held vacuum pump to the EGR valveand apply 2 to 3 inches of vacuum. Does the EGR hold vacuum? If it does not replace the EGR valve. If it does, replace the EVP sensor.

Code 94:

When the code 94 is received during the KOER test, it indicates the side of the thermactor air system with cylinders 5 to 8 is not working.
Possible causes include the following:
Blocked, leaking, or kinked vacuum lines
A defective air pump
A defective diverter valve
Defective or blocked air management solenoids

If the vacuum hoses are not damaged and are routed properly, repeat the KOER test. After the last memory code, depress the throttle to the floor and release it. The needle will rise to 12 volts. Probe both terminals on each of the air management solenoids. Each solenoid should have a terminal with 12 volts and a terminal with 0 volts. If neither terminal on one side has 12 volts, repair the 12-volt power supply to the solenoid. If both terminals have 12 volts at this point, repair the wire between that solenoid and either ECA terminal 51 or ECA terminal 11, depending on the affected solenoid.
If the circut passes the first part of the test, depress and release the throttle again. The voltmeter should drop to 0 volts. Both terminals of each AM solenoid should now have 12 volts on them. If one does not, replace the affected solenoid.

Code 44:

When the code 44 is received during the KOER test, it indicates the thermactor air system is not working.
Possible causes include the following:
Blocked, leaking, or kinked vacuum lines
A defective air pump
A defective diverter valve
Defective or blocked air management solenoids

If the vacuum hoses are not damaged and are routed properly, repeat the KOER test. After the last memory code, depress the throttle to the floor and release it. The needle will rise to 12 volts. Probe both terminals on each of the air management solenoids. Each solenoid should have a terminal with 12 volts and a terminal with 0 volts. If neither terminal on one side has 12 volts, repair the 12-volt power supply to the solenoid. If both terminals have 12 volts at this point, repair the wire between that solenoid and either ECA terminal 51 or ECA terminal 11, depending on the affected solenoid.
If the circut passes the first part of the test, depress and release the throttle again. The voltmeter should drop to 0 volts. Both terminals of each AM solenoid should now have 12 volts on them. If one does not, replace the affected solenoid.



Hope this helps,

My fingers hurt from typing...

Kevin

 

[HISSIN50]

Code 33:

When the code 33 is received during the KOER test, it means the EGR valve was detected as having opened during the test. If the code 33 is received during the KOER test, it is likely no vacuum supply runs to the EGR valve. Inspect the vacuum hose thatruns from the EVR to the EGR valve for restrictions, holes, and cracks. Check the vacuum hose that runs from the intake manifold to the EVR. If the vacuum hoses are okay, connect a vacuum gauge to the hose connected to the EGR valve. Repeat the KOER test. If the vacuum reading on the gauge is at least 1.5 inches of mercury, carefully insert a small screwdriver in one of the holes on the underside of the EGR valve. Work the EGR valve diaphragm up and down in an attempt to free any mechanical binding. Repeat the KOER test and check for the code 33.If the code 33 returns, connect a hand-held vacuum pump to the EGR valveand apply 2 to 3 inches of vacuum. Does the EGR hold vacuum? If it does not replace the EGR valve. If it does, replace the EVP sensor.

Code 94:

When the code 94 is received during the KOER test, it indicates the side of the thermactor air system with cylinders 5 to 8 is not working.
Possible causes include the following:
Blocked, leaking, or kinked vacuum lines
A defective air pump
A defective diverter valve
Defective or blocked air management solenoids

If the vacuum hoses are not damaged and are routed properly, repeat the KOER test. After the last memory code, depress the throttle to the floor and release it. The needle will rise to 12 volts. Probe both terminals on each of the air management solenoids. Each solenoid should have a terminal with 12 volts and a terminal with 0 volts. If neither terminal on one side has 12 volts, repair the 12-volt power supply to the solenoid. If both terminals have 12 volts at this point, repair the wire between that solenoid and either ECA terminal 51 or ECA terminal 11, depending on the affected solenoid.
If the circut passes the first part of the test, depress and release the throttle again. The voltmeter should drop to 0 volts. Both terminals of each AM solenoid should now have 12 volts on them. If one does not, replace the affected solenoid.

Code 44:

When the code 44 is received during the KOER test, it indicates the thermactor air system is not working.
Possible causes include the following:
Blocked, leaking, or kinked vacuum lines
A defective air pump
A defective diverter valve
Defective or blocked air management solenoids

If the vacuum hoses are not damaged and are routed properly, repeat the KOER test. After the last memory code, depress the throttle to the floor and release it. The needle will rise to 12 volts. Probe both terminals on each of the air management solenoids. Each solenoid should have a terminal with 12 volts and a terminal with 0 volts. If neither terminal on one side has 12 volts, repair the 12-volt power supply to the solenoid. If both terminals have 12 volts at this point, repair the wire between that solenoid and either ECA terminal 51 or ECA terminal 11, depending on the affected solenoid.
If the circut passes the first part of the test, depress and release the throttle again. The voltmeter should drop to 0 volts. Both terminals of each AM solenoid should now have 12 volts on them. If one does not, replace the affected solenoid.



Hope this helps,

My fingers hurt from typing...

Kevin

Ok Jrichker Jr.

 

[04sleeper]

Ok Jrichker Jr.

Not quite. But at least I can try.

 

[gooch06]

What does code 94 and 44 have to do with a code 85 on KOEO?

 

[04sleeper]

What does code 94 and 44 have to do with a code 85 on KOEO?

A code 85 refers to the Canister Purge Solenoid. It is controled by the ECA. It should have a resistance between 40 an 90 ohms. If it is not, replace the CANP.

It should not have anything to do with a code 94 and 44, those sound like vacuum problems with the emissions system.


Good Luck.

 

[the pony boy]

if you have removed your smog stuff would this cause these codes(44.94?).also would having the idle adjuster plate on the egr cause the 33 code? phil

 

[04sleeper]

if you have removed your smog stuff would this cause these codes(44.94?).also would having the idle adjuster plate on the egr cause the 33 code? phil

Yes, having the smog stuff removed will cause those codes. (44,94)

As for the idle adjuster plate, I have never heard of one that attaches to the EGR.

I HAVE heard of one that attaches to the IAB that adjusts the idle though, which should not cause a code 33.

Hope this helps.

 

[the pony boy]

opps my fault. iac thanks phil

 

[04sleeper]

No Problem.