Funny sound when I turn off engine

[paulj]

My truck's been running fine lately except for one thing. Sometimes when I turn off the engine it makes a sound that's kind of like a metallic clank. It sounds kind of like when you try to start an engine that's already running and you're grinding the flywheel gear teeth with the starter gear teeth. Except it's not that dramatic. Just a "clank" kind of sound for a second. Anybody know what it could be?

 

[paulj]

I listened to it again at lunch. Actually it makes the same sound when you start up and the solenoid is activated, except it does it when I turn off the engine.

 

[skyshark186]

Shot in the dark here. Check to make sure the starter bolts are tight?

 

[offcamber40]

Is the starter desengaging properly? Hopefully the flywheel bolts are tight! You may have something bouncing around inside the flywheel/clutch.. pull the cover and give it a look.

Mike

 

[3_puppies]

I had the same thing on my old 79. just picked up an 80 and it does the same thing. as you go past acc it energizes the starter. maybe worn out switch?

 

[dukester]

My 78 did the same thing when I first got it. It was a bad ignition switch. I heard it can really do some damage to your starter and coil if ignored. It doesn't cost much to fix ($15-$20) and takes maybe 15 minutes to install.

 

[65swb45]

paulj, what year is your truck?