Hello. I am new to this site. I am having a problem with a 93 F250 with a 4.9. I just have a 2500 scanner. I can read data stream on this veh but can not do a koer or koeo self test to retrieve codes. The check engine light is on. When I try to do the tests the scanner says to refer to reference manual if no responce in 60 sec. It just stays on that screen and nothing happens. Acouple of times it would tell me to snap throttle but again not continue from there. any help would be appreciated. thanks, jeremiah
93 F250 scanner communication problems
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How long are you waiting? If you get to the part where it tells you to snap the throttle, then it is likely commanding the test. Sometimes it takes a minute or two to complete the test, and the scanner screen appears to do nothing. Try waiting a couple of minutes, and if that doesn't do it, make sure you have a good connection at the EEC-IV connector (from scanner to the truck). The were notorious for having bad connections here in the rust belt. Now there aren't any more left here.
Joe"You don't build a reputation on what you're going to do"
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Joe"You don't build a reputation on what you're going to do"
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