Hummer Forums - Enthusiast Forum for Hummer Owners - My RPM Tach is reading wrong. PLEASE HELP!!!!

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trojan6768

08-03-2007 05:00 PM

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

[align=left]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
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trojan6768

08-03-2007 05:04 PM

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

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!
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Patrick

08-03-2007 10:39 PM

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

are you certain that your engine ISNT turning those RPMs?

HummBob

08-04-2007 02:56 AM

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

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

Muddydawg75

08-04-2007 08:47 AM

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

Wonder what model or year it is?

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