Mechanics

86

1986 Ford Ranger • 6 cylinder 2WD Manual • 300,000 miles

86 ford ranger I have replaced the fuel filter and the ignition modulator. When driving it for any long distance over 15 miles it starts to lose power and just shuts off. I have to wait depending the temp outside on how long it takes for it to cool off to start it again. It seems especially during the summer it acts up worse then in the winter months
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Jarich
February 13, 2011.



Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Rasmataz
Feb 13, 2011.