Question about 1992 Ford F250
Posted by Anonymous on
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Posted on Jan 02, 2017
After you check out the motor follow this path.
You should have either a + or - wire going to the switch. From the switch you should have a wire going to the + or - connector [depending on which way you wired the switch] on the relay coil.
This does not have to be a heavy wire, 16 ga is more than enough.
Most relays have a diagram on the case. The coil is usually pictured with a squiggly line through it and the two numbers located at each end correspond to the coil posts you need to hook to.Look for polarity marks, if you don't see any the coil proably isn't polarity sensitive.
Coonect the wire from the switch to one of the coil posts [depending on how you wired you switch] and either a constantly hot 12v wire to the other coil post or a wire that runs to ground [one advantage to wiring the switch - is that it can be easier to polish a bare spot under the dash and using a self drilling screw fasten a ground wire, than finding a hot wire to tie into.]
Wire the coil [to polarity marks if shown] and flip the switch, if you don't hear the relay click then reverse the wires, if you still don't hear it click, replace the relay.Good rule of thumb is to obtain a relay with at least 20% more amp capacity than what the motor pulls.
There are probably 3 other posts in the diagram all numbered.
In the diagram one shows a line from the number only post to a post with a number and letter[that's normally closed] the other shows no line to it[that's normally open].
Connect the motor to the normally open post.and connect a constantly hot 12 volt 12 ga wire[Or what is recommended by the lift maker] to the post that is numbered only..
Do it one step at a time and you'll know your wiring is correct and the thing should be working.
Posted on Jan 06, 2009
Disconnect the negative battery terminal. Disconnect the wiring connectors to the air cleaner, Mass Air Flow sensor, EGR vacuum solenoid, and DPFE sensor. Remove the air intake assembly (up to the throttle body). There are two vacuum lines from the EGR vacuum solenoid, find where they reach the EGR valve and the intake manifold, disconnect them at these points. There is a rubber hose coming from the firewall to the top of the engine, disconnect this and push it aside. Remove the nut directly below this hose (this nut holds the bracket that the DPFE and EGR vacuum solenoid are mounted to). Follow the mounting bracket around and remove the smaller nut holding it on. Have some tape ready to mark two hoses. Make a note of which hose is the "Hi" and "Ref" on the DPFE sensor and remove them. Remove the DPFE/EGR vacuum solenoid assembly. Congratulations, now you have access to the EGR valve!!
hoping help you
Posted on Jun 11, 2011
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