20 Most Recent 2002 Ford Taurus - Page 3 Questions & Answers

You visually checked for spark and there was none? #3 and #4 show to be on same coil, each coil fires two plugs. Battery has a full charge? The red wire at coil pack is voltage, it has good voltage? Any applicable trouble codes? The yellow wires with different tracer colors are grounds controlled by the pcm, one ground for each coil. Did you check voltage on ground wire engine cranking? I can't rule out a faulty coil driver in pcm. It's possible your old coil pack damaged the coil driver in pcm? If that is the problem, hope it didn't hurt the new coil pack.

You have a loss of vacuum from the engine, first check under the hood and make sure the vacuum storage tank is not damaged and leaking and it has vacuum in it when the engine is running. If all that is ok then move on to the line that goes inside the truck and verify it has vacuum.

I would go with the vacuum sensor because vacuum changes when giving it more pedal. Temperature should not vary immediately .

Inside gas tank. Need to drop tank. You also need a special tool to release sending unit from fuel lines. I would get the whole unit not just the pump.

You may have a idler or pulley that is getting a bad bearing and throwing the belt. The belt can stretch some but if they do most will squeak or not cool the engine and you will see the engine temp go up when it is slipping and then when it catches the temp will go back down.

it's lacking engine compression. change the rings.

every code I looked up related to selonoid, overdrive ,sensors in transmission , from codes I wonder if it moves at all or very badly.none of them an eazy or cheep fix.

Check the heater valve is fully open when in the hot position , this valve or tap often get stuck half open. if all is ok there flush the heater radiator as they can silt up.

Assuming you are referring to a fuse labeled "ATX" as the function, that would be for the Automatic TransaXle.

jhendrie Do you get off by making posts like this.

All 4 wires have power and the yellow and white and the yellow and black pulse with the test light, the yellow and red and the solid red wire have a steady light with no pulse. The PCM - engine computer is no good , driver (transistor's) in side turn the coil on an off . Burnt transistors .