fiqured my so call solenoid problem

[87Mustang351]

hey guys, so i went and bought a new solenoid, took it home looked at the paper that came with it, hook the wires all up right, and expected the thing to fire over, but there was nothing! man did my hopes ever drop, so i took the wire tester out checked the solenoid and was gertting power to the poative, which i had thought all along.

so i poped off the lil red wire that has the cap on it, turned the key ahead checked it and there was nothing...so i spliced the wire to my ingition fuse, didnt know what was going to happen, but soon as i turned the key foawrd the car started to roll over, probly shouldnt of put the wire there but now i know different.

anyways because i am not gettin power to that wire, thats why my cars not winding over, i was wonder how to go about fixing this? thanks guys

 

[HISSIN50]

You will want to check the clutch safety switch - it could be keeping the crank signal from reaching the control side of the solenoid. If not, go back to the ignition switch and see if you have cranking output voltage on that wire (white/pink IIRC).

Good luck.

 

[jrichker]

No Crank checklist for 5.0 Mustangs

Since some of the tests will bypass the safety interlocks, make sure that the car is in neutral and the parking brake is set. Becoming a pancake isn’t part of the repair process…

Check battery, terminal connections, ground, starter relay switch (also known as solenoid) and starter in that order. The clamp on with 2 bolts battery terminal ends are a know problem causer.

A voltmeter is handy if you are familiar with how to use it to find bad connections. Measure the voltage drop across a connection: more than .5 volts across a connection indicates a problem.
See http://www.fluke.com/application_notes/automotive/circuit.asp?AGID=1&SID=103 for help for help troubleshooting voltage drops across grounds.

1.) Will the car start if it is jumped? Then clean battery terminals and check battery.

2.) Check the battery to engine block ground, and the ground behind the engine to the firewall.

3.) Jump the big terminals on the starter relay next to the battery with a screwdriver - watch out for the sparks! If the engine cranks, the starter and power wiring is good. The starter relay is also known as a starter solenoid.

4.) Then pull the small push on connector (red wire) off the starter relay (Looks like it is stuck on a screw). Then jump between the screw and the terminal that is connected to the battery. If it starts, the relay is good and your problem is in the rest of the circuit.

5.) Remember to check the ignition switch, neutral safety switch on auto trans and the clutch safety switch on manual trans cars. If they are good, then you have wiring problems.
Typical start circuit...
Diagram courtesy of Tmoss &Stang&2birds

See http://www.autozone.com/images/cds/gif/large/0900823d80195963.gif for 88-90 year cars .OR see http://www.autozone.com/images/cds/gif/large/0900823d80195964.gif for 91-93 year cars. See http://www.autozone.com/servlet/UiB..._us/0900823d/80/1d/db/3c/0900823d801ddb3c.jsp for 94-95 model cars.

6.) The starter may be hung, loosen up the bolts that hold it on, and give it a good whack with a big hammer. Tighten up the bolts and try again.

7.) If that doesn't work, use a jumper cable from the positive lead on the battery direct to the starter post where the big wire from the relay connects. If it cranks then, it is the power wire from the relay gone bad. This will be hard to do, since there isn't much room to do it.

8.) Pull the starter and take it to Autozone or Pep Boys and have them test it. Starter fails test, then replace it. If you got this far, the starter is probably bad.

 

[87Mustang351]

ok thanks, my buddy crossed over the clutch safety switch with wire in it like he did to his camaro so u do not have to push the clutch in to start the car, so does that mean that my clutch safety is ok now?

also does the red/light blue lead right into my ingition,?

im gettin very frustrated, i HATE wires, i might jsut hook up a god daamn push button

 

[Aryan15]

I would not bypass the safety switch. I have heard too many stories, its dangerous. Replace the switch.

 

[87Mustang351]

i dont think it is the switch to begin with, so i will hook it back up once i get the car running, im just frustrated with the wiring, so im thinking on a push button start, but i dont really want to.

where does that red/light blue lead to the key ingition?

 

[87Mustang351]

ok just went out and tested the pink/white coming straight from my ingition switch and there not a tap of power coming from it, im gussing this is my problem?

i need to buy a new ingition?

 

[TheUser]

you tested the pink white wire from the ignition switch with the key in the start position, correct? That wire will only have voltage when in the start position - otherwise the starter would constantly be cranking.

If you did test if with the key in the start position and get no voltage, I would suspect the ignition switch. They're only around $15-20 and will need to be replaced eventually anyway, so it wouldn't be a total loss if that wasn't the problem.

I'm unclear...does the car start with the clutch interlock switch bypassed w/ the wire? It doesn't sound like it since you're getting nothing from the white/pink wire.

 

[87Mustang351]

no i didnt have the key in the start position, i only had it turned ahead to get power. i will try it tomrowow with the key ahead, i had the car started by crossing over the silenoid....b4 i by pssed the clutch switch