SOURCE: diagram of Igniton system 1987 gmc v1500 4x4
I own a shop, and think this; If you have a Chilton's Repair Manual, you can go to the back of the book, and locate the typical wiring diagram for most all GM vehicles. They are basically the same on all of them. I know the Haynes Manual has these in the back pages, so look there first. I have a feeling you have not got the neutral safety switch wired up. There should be a yellow wire that comes from the ignition switch that goes to this switch. The switch is located under the dash near the clutch linkage on a straight drive, and on the transmission for an automatic. There should be a purple wire that comes from this switch that goes to the starter solenoid. It should have power on it "only" when the ignition switch is turned to the start position, and the neutral safety/clutch start switch is activated. This switch may be out of adjustment, and not sending any power to the starter solenoid. This wire should hook on the terminal that is closest to the engine block. The other wire will have power on it all the time when the ignition switch is in the on position, and should hook to the (hold in winding) on the other side of the solenoid. You may be loosing power, or not have any power on the purple wire that activates the (pull in winding that is closest
SOURCE: H2 Hummer
Today 11-12-08 my 2003 H2 Hummer would not start. Checked battery it ischarged. Cables tight. Tried to start with portable booster pak. No go. Tridto jump start with my wife's Suburban. Still no go.
When I turn the switch I hear a single click and that is it. No engine turning over. While trying to start with key the headlights go out. Out of ideas, Will take to Chevy garage in am. Will post solution.
SOURCE: 93 eagle vision error code 51
the code 51 is your automatic shutdown relay control. and the crank position sensor is on the bellhousing behind the passenger side valve cover.
Have you replaced any relays? Let me know.
SOURCE: 1999 dodge ram le1500 pickup. starts easy but
You have fuel and spark, but the fuel : air ration needs to be at 14.6:1 ratio to have the engine running smoothly and efficiently. In order to have this golden ratio. Mass air flow sensor, O2 sensor needs to be synchronized well with throttle valve position to cooperate with the Engine Control Module. Try to clean off all gums built up in your throttle valve very well is the first thing to do before addressing next steps.
SOURCE: on my 1987 ford econoline
There are many wires that do diffrent things, i would get a harness connetor, this connector will connect to van wiring and then plug into the new radio connector, this way theres no splicing of the wires, i will enclose a wirng diagram also that will show you what ever wire is for , good day.
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