Question about 1988 Ford Bronco

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My 1988 Ford Bronco 5.0 has been stalling / acting like its run out of gas. (Has always run great before) I know it has plenty. Today 7.28.10 It stalled twice, first time it did it had at least 1/4 tank, and my gas gauge sometimes sticks but I did put $20 yesterday. So I got a ride home got my gas can and put 5 more gallons in. It started right up! then 2-3 miles later it quit again..Got another ride home came back with another 5 gallons even though I knew it didn't need it. Started up and made it home 4 miles away. Checked for leaks ect none found! Air filter, fuel filter, plugs replaced 6 mos ago, It does get very hot here though 121f last week! avg high 105 this time of year, could that be causing the problem?

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You might have what is called vapor lock. The fuel gets so hot that it boils in the fuel pump or the lines. Do this test spay water on the fuel pump to cool it off . ( this only works for a few minutes before it gets to hot and vapor locks again ) If you can Keep the engine heat Off the lines and the Fuel pump it might help. If you have metal fuel lines near a heat source rap them with something such as rubber fuel line sliced down the middle to keep the heat off them If you are using an aftermarket electric fuel pump relocate it down low near the gas tank ( they work better pushing than pulling ) away from any heat source such as exhaust If your using the stock fuel pump try replacing it with a new one it might be getting weak Replace the fuel filter while your at it.

Posted on Jul 29, 2010

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