Help reading codes
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Freshman User
Joined: Sep 2003
Posts: 40
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Help reading codes
I have a 92 f150 that idols bad and misses especially at low speeds and idol. I did the self test and got code 538-operator error, 536-brake on off faliure and 632- overdrive cancle switch changing states. Can any one tell me what i need to fix and how it is affecting the truck running bad?
Thanks
Thanks
Posting Guru
Joined: May 2002
Posts: 2,450
Likes: 2
From: Baltimore
The codes you got don't have anything to do with the problem you described. When pulling codes, I believe you need to hit the brake pedal once, and engage/dis-engage the OD. That's why you got those 2 codes.
Regarding the problem you described, it sounds like it could be vacuum or spark related. You might want to start with a tune up... plugs, wires, and fuel filter.
Regarding the problem you described, it sounds like it could be vacuum or spark related. You might want to start with a tune up... plugs, wires, and fuel filter.
