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metal grinding noise when starting engine?

9K views 6 replies 6 participants last post by  lkurek 
#1 ·
for the past few days i've been hearing a metal grinding noise when i start my truck. the noise only last about a second. i does it about every 10 times i start it. does anyone know what it might be, starter, pulley? thanks for any help.
 
#7 ·
Starter or the starter relay. If it sounds like a grinder running down...that's the engine spinning the starter over. The starter gear is supposed to retract when the engine starts....if it doesnt, well figure your engine at what, 2K rpm upon startup with a gear ratio (assuming 153 to 12 tooth) of 12.75:1, thats 25,500 rpm. Yikes!

I also say starter relay as if its sticking somehow (also could be the PCM not detecting engine startup properly) then it may be keeping the starter engaged too long.
 
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