Warmer temps Dead V10
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Warmer temps Dead V10
99 F250 V10 100k on it. Every time the temperature outside is in the 80's or higher the truck will not start. The only way I can get it to turn over is to jump the solenoid on the passenger side fender with a screwdriver. I have had it into a few different mechanics and still have not found a problem. Suggestions?
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Joined: Mar 2005
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From: Burnsville, MN
When your engine is cranking, the starter draws a LOT of current, maybe 50 to 100 amps. Designers don't want that amount of current running through your ignition switch for a bunch of reasons, so the ignition switch activates the solenoid, maybe only drawing 5 amps or less (just guessing). However, when the solenoid sucks current, it causes the main circuit with the starter on it to close and energize the starter.
If what you are doing with your screwdriver is to bypass the solenoid and provide 12v diretly to the starter, then your problem is simply in either the solenoid or the ignition switch.
To determine which, apply 12v directly to the solenoid with a jumper from your battery. If the starter kicks in, then your problem is in the ignition switch. If it has no effect, then the problem is in the solenoid.
If you know how to use a meter, just check the solenoid for 12v with the ignition in the starting position....
If what you are doing with your screwdriver is to bypass the solenoid and provide 12v diretly to the starter, then your problem is simply in either the solenoid or the ignition switch.
To determine which, apply 12v directly to the solenoid with a jumper from your battery. If the starter kicks in, then your problem is in the ignition switch. If it has no effect, then the problem is in the solenoid.
If you know how to use a meter, just check the solenoid for 12v with the ignition in the starting position....
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