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To find the code numbers for troubleshooting a 1990 F250 with cold start issues, it's best to take the vehicle to a mechanic who has a diagnostic machine. The machine will provide the codes which can then be used to refer to the vehicle instruction manual.
OBD codes that start with a P are power train codes.
It's not a code ,it's the start of the diagnostic programn.codes follow ,then 55 to end code reading.
There must be a "check engine" light on. Start with investigating the DTC's (Diagnostic Trouble Codes).
turn the ignition on but do not start the car. hold the Off and Red Warmer button on the Climate control panel to the right of your speedometer. hold them until the dash will flash off and on and it will then list you diagnostic codes
turn the ignition on but do not start the car. hold the Off and Red Warmer button on the Climate control panel to the right of your speedometer. hold them until the dash will flash off and on and it will then list you diagnostic codes
Scan the computer diagnostic codes using a GM code scanner.
start with your key in the off position. Turn key to "on" - not start. Like this: on - off - on - off - on. Your check engine light will flash the codes for you. All codes are two digits - There will be a break between numbers. example: 5 flashes (break) 5 flashes = code 55 (this happens to be the "end of codes" or "no codes" if you did not receive any before the 55). Hope this helps.
Dodge started using the 5.9L Cummins engine in the 1989 model year.
No.
something to do with diagnostic codes. you need to have the codes read. I'm having battery problems with my Saturn and it seems to happen then.
turn your key three times but don't start it. And a code will appear . write it down and put in a google search.