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Old June 10th, 2008, 07:37 PM   #1
Familyman
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Default 92 F150 won't start

My 92 sits more often than not. It started running eratically last summer ie high idle at stops and shifting strangely. Then this fall I was running it and it quit the high idle thing but then started chugging so bad I would have to almost pump the gas petal to keep it going. Then it would just cough and take off like normal. Now it won't start at all. Any thoughts?
Before all this it ran great. Lots of power and piss poor mileage

BTW 5.8L E4OD electonic shift T case.


Thanks
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Old June 10th, 2008, 10:29 PM   #2
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Check your MAP sensor or TPS
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Old June 11th, 2008, 06:55 AM   #3
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TPS I know. MAP? Mass Airflow......?

Todd
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Old June 11th, 2008, 09:38 AM   #4
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both are good places to start. i belive a 92 is speed density. at least my 92 bronco was. they didnt go to mass air unless you swapped it or someone swapped it until like 94. when it crankes what does it do? possible fuel pump.
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Old June 11th, 2008, 02:55 PM   #5
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MAP- manifold absolute pressure

A manifold absolute pressure sensor (MAP) is one of the sensors used in an internal combustion engine's electronic control system. Engines that use a MAP sensor are typically fuel injected. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU). This is necessary to calculate air density and determine the engine's air mass flow rate, which in turn is used to calculate the appropriate fuel flow.
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Old June 12th, 2008, 10:07 AM   #6
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I charged up the battery yesterday, went out, cranked it over and it started right up! shut it down and went out about 3 hours later and wouldn't start. Same old issue. It did not want to shift when I did drive it. Picking up a tps and a map this afternoon. Let's see what happens.
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Old June 12th, 2008, 12:42 PM   #7
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i had this problem with my 97 150 and it was the fuel filter on the frame.
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Old June 12th, 2008, 02:49 PM   #8
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Did you check the battery out?? Heres why, my '97 F250 acted weird like that, turned out the battery had a bad cell. Swapped it out, problem solved.
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Old June 12th, 2008, 04:19 PM   #9
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Any codes? Probably not if you havent driven in for a few miles.
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Old June 12th, 2008, 07:19 PM   #10
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TPS corrected the problem. Starts, idles and drives like it did before. Thanks for the help all. BTW what a PITA to get the TPS out. I had to remove the whole butterfly assembly and oops the gasket was ruined! Made a new one traced from the pieces, put it all back together and fired it up!
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Old June 12th, 2008, 07:41 PM   #11
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your welcome
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Old June 26th, 2008, 12:20 PM   #12
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future thought...if you dont run it much, dont buy much gas. it could gum up, plug the filter when you do run it. change the filter yearly as well. this may help solve future issues if oyu dont run it much...like once every few months. other than that i woudnt worry to much.
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