timming problems
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Freshman User
Joined: Jul 2003
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timming problems
i have a 1990 f150 4x4 that i am having problems with spark nocking, no power, and in say 4th gear at say 50 miles an hour if you stand in it, it just starts to shutter and ping real loud. i have done everything i know how to do as far as timming goes. my question is is there something that could have gone wrong w/ the computer program or some sensor given the computer the wrong info or something. also could a computer diagnosis tell me anything as far as timming goes? any help or info will be helpfull thanks
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Freshman User
Joined: Jul 2003
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understand no converter dual exaust oxygen sensor is still pluged in but nothing else.
it ran fine until i moved the distributer around. if the computer is reading crank position and not actuall timming could i have done something to confuse the comp. or something? could i uplug the battery and reset the comp.? or is this way of base?
it ran fine until i moved the distributer around. if the computer is reading crank position and not actuall timming could i have done something to confuse the comp. or something? could i uplug the battery and reset the comp.? or is this way of base?
Senior User
Joined: Feb 2004
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From: va beach VA
did you check the timing with spout disconnected? if so was the base timing @10. read the codes from the comp. this could help you determine the problem.
you can disconnect battery, turn on headlights for 10 minutes then hook it back up, this will clear any codes and reset the computor
you can disconnect battery, turn on headlights for 10 minutes then hook it back up, this will clear any codes and reset the computor
Elder User
Joined: Nov 2003
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From: West Virginia
You will have to put the distributer back where it was. This will get you back to your base timing. I'm not sure of the steps to get your base timing. Maybe someone will chime in and let us know.
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is there any way to read the codes without a tool that is made for reading codes, like a volt meter or something? i have noticed that there is a plug under the hood that you can get code readings from is this where i need to check them at or inside the cab? i have disconnected the spout connector and set the timming, but the first time i tried to adjust the timming i did not know about the connector and that was why i was thinking that might have confused the comp. some how.
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Senior User
Joined: Feb 2004
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From: va beach VA
your base should be 10 degrees BTDC, that should get you in the game. yes you can read codes that way, look in your haynes or chiltons and it should tell you how to do it. the needle sweeps out the code
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