Question about 2008 Ford Ranger
Yes and it is the ECM
run the fault codes to find where the fault is
Posted on Apr 09, 2015
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Posted on Jan 02, 2017
SOURCE: 1992 ford ranger
If this speratic problem seams to happen most when it's raining or damp, it is a shorting master contol that is to blame. The master control mother board is located on the firewall. Over time, the moisture seal on the cover fails and the motherboard gets damp and meny false signals are sent. This can even happen if the truck is off and key is not in the ignition (this mother board will alwas have power going to it as long as the battery is connected). A cheap way to check this is to remove the cover, put a plastic grocery bag over the mother board and use an small elastic band to close the open end, allow the wires connected to the mother board to go out the open end. If this solves the problem, replace the seals on the master control cover. Care should be taken as if there is ANY corrossion on the mother board, it will need to be replaced.
Posted on Oct 28, 2008
One or more of your fuel injectors are defective. I have a 1991 Olds Ciera 3.3L V-6. It had the exact same problem as your car did.I had checked the pressure,which is 40 psi at the fuel rail. I also replaced the fuel filter,checked the crankshaft sensor,and throttle sensor. Still had the same problem. Cleaned the throtte body intake. What i finally found was a bad #4 fuel injector. Take a multimeter,diconnect the electrical connectors of each injector,check the resistence of each injector over the 2 electrical connectors ,they should be between 12 and 14 omes. The ones that are NOT passing the test(or the ones that don't match up),replace. The computor (EMC) ,will not let the engine start,if one or more injectors are defective.
Posted on Apr 25, 2009
check the pulse on the injector wire with a noid lite or a meter. If no flash then you most likely need a computer. Its called a quad driver in the PCM thats fried. You may have a shorted component that caused it to fail.
Since you say it will run if you add fuel manually I don't suspect the crank sensor because you have spark.
Posted on Aug 15, 2009
Testimonial: "Thanks much ill check in am"
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