QuestionQUESTION: There is no power to the fuel regulator unless we hook a wire from the battery direct to the red wire at the regulator. There are two wires going to the regulator,one red and one green.When the wire is hooked direct the truck will start, when it is left to go through the switch it will only turn over, but it will not start.
ANSWER: Hello again.
What are you calling a regulator, as the fuel pressure regulator on this and most fuel injected vehicles, is a small steel, vacuum operated pod located on the fuel rail near the injectors. They are not electrical.
Where is this located?
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QUESTION: The number on a plastic cap on the top of the regulator that we are talking about is FOTE 9J453 A1A. There is a plug in on the front with the red and green wire in it. It is bolted on the front of a circuit breaker type box with 2 bolts. This is just ahead of the small steel vacuum pod that you mentioned.
Answer
wiring
Well I have checked again and found there was never an electric fuel pressure regulator..
I think, by your description, that you are referring to the EGR solenoid. ont he driver's side of the engine. a red and a green wire and 2 vacuum hoses connected.
See pic
If this is true, I suspect that you are supplying battery voltage to the red wire to get it to run. In effect, you are supplying current to the entire computor sytem and controls.
This is the job of the EEC relay.
It gets power from the yellow wire and fusable link at the starter solenoid on the fender.
Check the yellow wire going into the relay, if good, check for 12v at the red/green wire at the relay, with key on. this is the wire from the ignition switch that turns the relay on, allowing the electricity from the yellow wire to go to the red wire and power the engine.
see wiring diagra pic ( ihope it works)
