I have a 1995 1845c that will only run if the starter is left cranking. When the key is springs back to the run position, the machine quits. If I leave the starter spinning, it stays running. New switch was installed last year. Any help appreciated, thanks.
shut off solenoid Hold in coil? which engine and injection pump?
Sorry, it's a 1998 with 4-390 Diesel engine. Not sure of the pump.
First thing I would check is to see if the wire to the injection pump is "Hot" with the key in the "Run" position. Might have a bad switch unless someone changed wires lately.
If the relay on the pump has 12v it's internal. Most likely the hold coil is not getting 12 volts and the start coil is. I have also seen a loose spade connection.
Im guessing either ignition switch as kshansen said or the fuel cut off solenoid. I have seen the 4-390 with a couple of different pumps so that will make a difference in whether you have a 2 or 3 wire fuel cut off. the bosch inline pumps its is bolted on the outside of the pump and has 3 wires "pull in, Hold in and ground". Rotary pumps have a feww different configurations. ANy chance we can see a pic of what you have? that'll help us nail it down for you.
Thanks for helping with this. Very much appreciated.
Bosch inline pump. The shut off solenoid is between the pump and the block. It has a 3 wire pigtails. 1 wire should be hot with the ignition in run. One wire should be hot in crank & the third is a ground. If you have all of those the solenoid is bad. http://www.ebay.com/itm/281632465737?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT If you don't have any power on the hot in run wire start looking at the wiring and ignition switch.
Thanks for all the help. Did as you suggested, and found no power to the "ignition in run" wire. I ran a 12 volt lead to that wire (after the harness) and all worked. So rather than chase this wire through the harness, I ran a separate lead line direct from the ignition switch to the "run" line. All good
Glad it worked out.