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- - Rpm (https://chevroletforum.com/forum/general-tech-10/rpm-28749/)

deadwood

Dec 17, 2009 5:30 PM

Rpm

here is my problem when i start up my chevy 1500 hd with a 6.0 the rpms read 6000 rpm and wont return back to the acutal reading of the rpm but if i shut the truck off and start it 5 or 6 times it slowly brings it down so i was wondering what the problem is thanks

JCSkokos

Dec 18, 2009 12:41 PM

sounds like your tachometer might be stuck. it may need replacing

deadwood

Dec 19, 2009 4:00 PM

rpm

my tac works fine ill be driving around and it would be acting normal and then all of a sudden it would read 6 thousand rpm then i will shut the truck off and start it back up and it will read 5 if i keep doing that it will keep dropping it 5 thousand rmps at a time until it reads normal operation i hope you understand what im tryin to say here it may sound confussing thanks

nauticstar87

Dec 19, 2009 4:06 PM

Possibly a bad ground, or the stepper motor.

JCSkokos

Dec 20, 2009 11:31 AM

the bad ground is entirely possible, a friend of mine had an old Buick that the tach and speedometer werent working. He replaced the motor mounts and both worked again.

deadwood

Dec 28, 2009 6:02 PM

rpm

now get this when i went to drive it today i looked down and the speedo wasnt working and the tac was working but if i shut the truck off and start it 2 times and then drive it my speedo started to work again so my question is, is my cluster going bad or is there a sencer going bad or a bad ground somewhere thanks

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