'92 f250 check engine light issues???
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'92 f250 check engine light issues???
I have a '92 f250 with a 5.8 ltr, I had the motor rebuilt last summer. When the motor was done I added a rv cam for towing, now occasionally my check engine light comes on. Some times it stays on for long periods of time and other times its on for just a few seconds. Any ideas why this happens? I'm new to owning computer operated vehicles and not sure what causes this. The truck seems to run fine, no overheating or loss of oil or coolant. Is it possible to get a code reader for a truck of this age still?
Post Fiend
Joined: Jan 2005
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Zip Code Select | O'Reilly Auto Parts You could get something like this. Or go to fordfuelinjection.com and from the list on the right, click on self test for instructions on reading codes without a code reader.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Yeah you don't need a code reader at all to for this truck, the silly thing is it's no faster to pull the codes with a reader because it too has to wait for the computer to slowly flash the codes before it can display them, but it does elminate the possibility of you miscounting.
A short version of the DIY code retreval.
Find the EEC test connector on the drivers side inner fender and connect a jumper wire between the STI and Sig_Rtn pins.
Get a pen and paper and make yourself comfortable in the drivers seat. Turn the key to run and the check engine light will begin to flash.
Copy the sequence of blinks down noting the short and long seperations.
Things you should know.
Your truck should produce 3-digit codes.
Codes are repeated each time the test is run.
Digits of a code are seperated by a short pause.
Full codes are seperated by a longer pause.
You can turn the key off and start the test again as many times as you like.
There are two classes of codes..
Stored(KOEO).. these are problems that occur every time the vehicle was running.
Constant memory(CM).. these are thing the computer noticed the last time the engine was running.
KOEO and CM codes are seperated by a single flash that will be all alone with long pauses on either side of it.
Lots more info and pics here... Ford Fuel Injection How To Run a Self-Test
A short version of the DIY code retreval.
Find the EEC test connector on the drivers side inner fender and connect a jumper wire between the STI and Sig_Rtn pins.
Get a pen and paper and make yourself comfortable in the drivers seat. Turn the key to run and the check engine light will begin to flash.
Copy the sequence of blinks down noting the short and long seperations.
Things you should know.
Your truck should produce 3-digit codes.
Codes are repeated each time the test is run.
Digits of a code are seperated by a short pause.
Full codes are seperated by a longer pause.
You can turn the key off and start the test again as many times as you like.
There are two classes of codes..
Stored(KOEO).. these are problems that occur every time the vehicle was running.
Constant memory(CM).. these are thing the computer noticed the last time the engine was running.
KOEO and CM codes are seperated by a single flash that will be all alone with long pauses on either side of it.
Lots more info and pics here... Ford Fuel Injection How To Run a Self-Test
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