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catmastertech
catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 2334
Experience:  19 years Cat, 3 years Case
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cat 4.25 wont shut off =allready replaced ignition switch

Customer Question

cat 4.25 wont shut off =allready replaced ignition switch
Submitted: 7 years ago.
Category: Heavy Equipment
Expert:  jim salsgiver replied 7 years ago.

is there a solenoid on the injector pump? if ther is make shure it is operating correctly. should click either when the ignition is switched to the on position, or it may be a shut down solonid and only operates momentarly when the key is in the off position.

Customer: replied 7 years ago.
yes got solenoid only two wires pos and ground-i even cut pos wire and truck still on
Customer: replied 7 years ago.
still waiting for answer to question
Expert:  catmastertech replied 7 years ago.
What jim salsgiver is saying is to test the solenoid. The best way is to remove it from the engine and then try it with the key. It must jump with a quick snap. If it is slow or needs at tap to get it to move, replace it. It is a common failure. You may just want to replace it anyway.