KOER done. Help needed.
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Mountain Pass
Joined: Jan 2006
Posts: 249
Likes: 2
From: Moody, AL
KOER done. Help needed.
I have been very busy lately, but I finally got a pass on my KOEO test today. Now I have moved on to the KOER. I got the codes, but I don't know what to do to resolve them. Any advice would be greatly appreciated.
1994 5.0 RWD E4OD
KOER<O
</O
412 – Cannot control RPM during KOER high RPM check<O</O
411 – Cannot control RPM during KOER low RPM check<O</O
538 – Insufficient RPM change during KOER Dynamic Response Check<O</O
(Truck) Invalid cylinder balance test due to throttle movement during test<O</O
536 – Brake On/Off (BOO) circuit not activated during KOER<O</O
632 – Overdrive Transmission Cancel Switch/ no action during self engine run test
I did not do the overdrive switch or brake on/off circuit during the test. I did quickly press the throttle all the way down to do the Dynamic Response Test. Is there a certain RPM the engine should achieve before letting off the throttle during the DRT?
1994 5.0 RWD E4OD
KOER<O
</O412 – Cannot control RPM during KOER high RPM check<O
</O411 – Cannot control RPM during KOER low RPM check<O
</O538 – Insufficient RPM change during KOER Dynamic Response Check<O
</O(Truck) Invalid cylinder balance test due to throttle movement during test<O
</O536 – Brake On/Off (BOO) circuit not activated during KOER<O
</O632 – Overdrive Transmission Cancel Switch/ no action during self engine run test
I did not do the overdrive switch or brake on/off circuit during the test. I did quickly press the throttle all the way down to do the Dynamic Response Test. Is there a certain RPM the engine should achieve before letting off the throttle during the DRT?
Elder User
Joined: Jun 2012
Posts: 757
Likes: 0
From: 7th realm of hell, Va.
538 means you did not press the accelerator to the floor at the right time during the test.
536 means you did no thit the brake pedal during the test
632 means you did press the OD off button on then off during the test.
411 and 412 may be because you hit the accelerator at the wrong time
Matt
536 means you did no thit the brake pedal during the test
632 means you did press the OD off button on then off during the test.
411 and 412 may be because you hit the accelerator at the wrong time
Matt
Thread Starter
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Mountain Pass
Joined: Jan 2006
Posts: 249
Likes: 2
From: Moody, AL
538 means you did not press the accelerator to the floor at the right time during the test.
536 means you did no thit the brake pedal during the test
632 means you did press the OD off button on then off during the test.
411 and 412 may be because you hit the accelerator at the wrong time
Matt
536 means you did no thit the brake pedal during the test
632 means you did press the OD off button on then off during the test.
411 and 412 may be because you hit the accelerator at the wrong time
Matt
So you are saying I might have passed the test except for the things I didn't do. That is what I thought. I will try again tomorrow and make sure to do the OD and brake tests. Does it matter if the OD is on or off when you start the test? I put the accelerator to the floor, but I don't think I did it long enough. Is there a RPM I should hit before letting off on the throttle?
Elder User
Joined: Jun 2012
Posts: 757
Likes: 0
From: 7th realm of hell, Va.
Start with the OD button on, so the light on the shifter is off, since that is the default position. Once it starts the dynamic engine test don't touch anything as changing throttle position will affeft the test. Durign the dynamic test it starts at a known rpm and drips one cylinder out at a time measuring the RPM drop and comparing it to a known expected value.
Matt
Matt
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