It REALLY wants to start!

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Mar 26, 2020 | 09:09 PM

SoCal-Bob

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Mountain Pass

Joined: Oct 2013

Posts: 196

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It REALLY wants to start!

Guys, I got a question for you. A friend of mine told me his trucks starter will not disengage, in gear, or not, even with the ignition off it still keeps spinning the engine. The battery has to be disconnected.

the truck is a 01 SD w/V-10. I’ve have yet to see this issue. Anyone have any suggestion?

Mar 26, 2020 | 09:23 PM

z31freakify

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Joined: Dec 2012

Posts: 11,271

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From: Las Cruces New Mexico

Shorted out bendix? Give it a tap and see if it disingages.

Mar 26, 2020 | 10:06 PM

SoCal-Bob

Thread Starter

Mountain Pass

Joined: Oct 2013

Posts: 196

Likes: 5

Quote:

Originally Posted by z31freakify

Shorted out bendix? Give it a tap and see if it disingages.

That might help, but we’re still puzzled as to how power is getting past the ignition switch. Keys off, it’s still engaged and turning.

Mar 26, 2020 | 10:20 PM

Blaine71

Freshman User

Joined: Feb 2013

Posts: 27

Likes: 1

My first thought would be a stuck relay.

Mar 26, 2020 | 10:27 PM

rjdj1186

Laughing Gas

Joined: May 2019

Posts: 934

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That's my guess. Stuck relay.

Mar 26, 2020 | 10:50 PM

99f350sd

Lead Driver

Joined: May 2003

Posts: 9,303

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From: Lyndonville, Vermont

First off starter has power to it all the time. If the solenoid on top of the starter stays stuck then wha la..starter will run all the time.
replace the solenoid on the starter. Basically pull the starter and bench test.

Mar 27, 2020 | 03:55 PM

SoCal-Bob

Thread Starter

Mountain Pass

Joined: Oct 2013

Posts: 196

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Thanks for the help guys!

I’ll update once it’s figured out, probably over the weekend.

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Mar 28, 2020 | 09:17 AM

projectSHO89

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Joined: Jan 2004

Posts: 19,762

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From: St Louis

Disconnect the small wire from the starter relay to eliminate the ignition switch side of the circuit. If it still cranks continuously after that, it's either the stuck relay or stuck Bendix as already suggested. If it quits cranking with the small wire disconnected, then that starter relay trigger wire is shorted or connected to battery power at some point. Might be a stuck ignition switch or a short in the fusebox or wiring harness. I've seen rodent damage cause this particular issue where insulation was chewed off causing the short to power.