Question about 1990 Ford F150

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I changed the gas filter, it will start when i put the gas pedal to the floor and and it will Idle. To keep it running and to begin up the RPMs i have to pump the gas pedal

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This ounds like it may be over fueling, the first and most common problem like this is the coolant temp sensor, when they go bad it tells the computer to dump lots of fuel or tiny bits of fuel. i would start by checking that or just replacing it, to check this you will need an ohm meter and ohm it out then take the reading and cross it on the chart and it will tell you what temp its telling the computer the engine is at, the chart is on the internet just google testing coolant temp sensor, hope his helps,

Posted on Aug 29, 2010

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