My RPM Tach is reading wrong. PLEASE HELP!!!!

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My RPM Tach is reading wrong. PLEASE HELP!!!!

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Hummer Forum >> Hummer Forums - General >> General Hummer Talk >> My RPM Tach is reading wrong. PLEASE HELP!!!!

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My RPM Tach is reading wrong. PLEASE HELP!!!! - 8/3/2007 3:00:48 PM

trojan6768

Posts: 2
Joined: 8/3/2007
Status: offline

my tach is way off it claims that I am idling at 2500 rpm. Have any of you seen this before? How can I reset it? Would unplugging the battery for 30 min or so work? Please advise. Thanks

Post #: 1

RE: My RPM Tach is reading wrong. PLEASE HELP!!!! - 8/3/2007 3:04:46 PM

trojan6768

Posts: 2
Joined: 8/3/2007
Status: offline

My tach is way off. It says I am idling at 2500rpm and at 70 I am turing 4200. Have any of you seen this before and if so how can I fix it. Would unplugging the battery oifr 30 min or so reset this? Please advise. Thanks!

(in reply to trojan6768)

Post #: 2

RE: My RPM Tach is reading wrong. PLEASE HELP!!!! - 8/3/2007 8:39:36 PM

Patrick

Posts: 1086
Status: offline

are you certain that your engine ISNT turning those RPMs?

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(in reply to trojan6768)

Post #: 3

RE: My RPM Tach is reading wrong. PLEASE HELP!!!! - 8/4/2007 12:56:35 AM

HummBob

Posts: 15973
Joined: 5/6/2006
Status: online

I had a problem with my Tach! Turned out the dealership had to replace my whole cluster! Warranty is AWESOME!!!

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2004 Black Hummer H2

2007 Black Escalade