My 1994 4.0 extended cab ranger died at stoplights with some smoke in cab by drivers side, has spark but no fuel. Can't find a burnt wire my check engine light no longer comes on when i turn on the key what could it be?

 

No CEL(check engine light) means no computer, so no fuel, spark is run by the EDIS module so would still work.

When you turn on the key the ignition switch(under steering column above brake pedal) sends 12volts to the EEC relay in the engine fuse box.
EEC Relay closes and sends 12volts to the EEC(computer) and EDIS module.

Since spark is working I would think EEC Relay is "clicking" closed

Since CEL is not then either computers power wire is bad or computer is.
In 1994 the computer should be on drivers side of engine bay next to firewall between inner fender and cab.

Drawing of location here: http://www.justanswer.com/uploads/mu...5_204601_1.png

Computer is called PCM(powertrain control module) by Ford, and is labeled as such in drawing, upper right

Smoke means something fried, simple as that, not sure you would get smoke in the cab from PCM but might happen.
Unhook battery, FOR SURE, when checking any wiring, locate PCM and pull it out, remove 60 wire connector and then open the top to see circuit board.

Good look at what you should see here: Ford EEC-IV

Also shows what wires to test for 12volts with key on

 

Thanks i finally got the ecm out and it's fried have to find out which pin # feeds it power to check that out. Does anyone have a used one for sale? f47f-12a60-cma or where is best place to buy them?

 

Above Ford EEC-IV link has most of the pin wiring.

Pin #1 will have 12volts all the time, that is the KAP(keep alive power), it allows computer to save settings in memory, like a radio has to save pre-sets and clock time.

Pins 37 and 57 get 12volts from the EEC relay when key is turned on, these are the main power wires for the computer.

EEC relay is in the engine fuse box, it also powers the fuel injectors, fuel pump relay(not pump), ignition module(EDIS) and MAF sensor

EEC/PCM/ECM numbering works like this: f47f-12a60-cma
F4 = 1994, so F3 = 1993, F5 = 1995
7F = Ranger model
12A60 = Ford part number used for ALL computers, Ford still uses this number for the computer in any model

CMA = the base software and firm wear loaded when computer was made, Ford never released a cross reference for this number

There will also be a larger number stamped on the label, this number will also be on a sticker found in engine bay, usually drivers side by hood hinge, also in passenger door jab sometimes.
This number is the software loaded after vehicle was completely built so includes changes for any options added that the computer needs to be "aware of".

A 1993 or 1994 computer should be OK to use, 1995(and up) had EEC-V computer so won't work
EEC-IV computers only need to control engine and trans if an automatic, they didn't control 4WD.
If you have an EGR valve or Cam Position sensor(CPS), so a 1994 truck sold in Calif., then you need a computer from a Ranger also from Calif.

If in the other 49 states then you don't have an EGR or CPS

So parameters are
1993/1994, F3/F4
Ranger 7F

 

Weird, it cut my post off at the bottom and I can't edit it???


1993/1994, F3/F4
Ranger 7F

 

Weird, it cut my post off at the bottom and I can't edit it???