Bad PCM?
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Freshman User
Joined: Jul 2000
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Bad PCM?
Hi everyone, thanks for the help I've received here in the past few weeks.
However I have another one. On my 93 F-150 5.0 EFI AOD I'm getting codes:
#84 EVR Selenoid Circuit Failure.
#33 EGR Valve Position Sensor or Pressure
Feedback Sensor indicates EGR valve is not opening or not seated properly. (Closed)
I swapped the EGR and EVP with a know working system.
Purchased a new EVR and I'm still getting same codes. I unplugged the PCM and checked pin 33 and sig ret. line to EVR - No opens or shorts.
Could this mean my PCM is faulty? I called and the Dealership said $225.00 - $235.00
Thanks for any help.
Brian & Kathy
However I have another one. On my 93 F-150 5.0 EFI AOD I'm getting codes:
#84 EVR Selenoid Circuit Failure.
#33 EGR Valve Position Sensor or Pressure
Feedback Sensor indicates EGR valve is not opening or not seated properly. (Closed)
I swapped the EGR and EVP with a know working system.
Purchased a new EVR and I'm still getting same codes. I unplugged the PCM and checked pin 33 and sig ret. line to EVR - No opens or shorts.
Could this mean my PCM is faulty? I called and the Dealership said $225.00 - $235.00
Thanks for any help.
Brian & Kathy
Fleet Mechanic
Joined: Aug 2000
Posts: 1,504
Likes: 1
From: Texas
Bad PCM?
Do you have a code scanner? If so, then there should be a section on clearing the codes from the memory. I think this is what you need to do. If you don't have a reader, then pull off one of the battery cables. This should also clear the codes out of your computer. You do have to leave the cable off for about 10-15 minutes I think in order for the codes to clear. (like I said "I think")
Clearing the codes should help with your problem. I know mine seems to run better, when I disconnect the battery whenever I'm working on something electrical on it.
Hope this helps.
Clearing the codes should help with your problem. I know mine seems to run better, when I disconnect the battery whenever I'm working on something electrical on it.
Hope this helps.
Thread Starter
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Freshman User
Joined: Jul 2000
Posts: 31
Likes: 0
Bad PCM?
Thanks for the reply. I have disconnected the battery several times in the last week. Once even overnight, but the check engine light still comes on and my code scanner gives me #84 KOEO and #33 KOER.
Thanks again,
Brian & Kathy
Thanks again,
Brian & Kathy
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