Hello Folks,
I would like to share what I have learned today regarding hard starting 92 Bighorn. The symptom was I could hear the starting relay click every time I start my car. The starter motor would not turn on the first try, after 3 or 4 attempts the starter would turn but not enough to start the engine. I replaced the battery, starting relay, and cleaned and replaced the carbon brushes on the starter motor I also checked the solenoid. I did not found anything unusual on the continuity checks of all wires from the steering column to the start relay up to the starter.
I tried to use a jumper wire on the white/black and black/white contacts of the key switch. The engine started very good. I removed the end of the key switch which was only held by one small screw. I cleaned the contacts and after that the engine starts very good on the first attempt every time. After plenty nicks on my hand and a very hard of work to remove and replace the starter motor, its a little frustrating that the solution was only a piece of sandpaper and 20 minutes of my time. Anyway, looking on the bright side the starter motor was very dirty inside and the carbon brushes needs to be changed anyway.
Now, I have a new problem every time the oil pressure gauge goes to maximum when I switch ON the key. Can someone tell me the location of the oil pressure sending unit, a picture will be very much appreciated. Thanks in advance!