 Tach issue/problem |
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| rmital |
 Jun 9 2013, 07:11 PM
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#1
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Northeast optimist  Group: Members Posts: 1,946 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268  |
74 2.0L duel carbs
Car runs good, while racing around the neighborhood I noticed my rpm's were low, not getting over 3K. But, sounded/shifting normal. Was positive at least around 3.5K-4K Hooked up my dwell/rpm/volt meter and yes, was rpm'ing properly. But, the tach was not indicating correctly. Does a tach fail slowly? Your thoughts. Thanks! |
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| euro911 |
Jun 9 2013, 07:30 PM
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California 
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Anything with electronics in it can get out of spec with age/usage. Resistors break down and their values change, capacitors start leaking, etc.
The tach in the 'BB' is intermittent, but I think my problem is a bad (loose) ground ... the terminals at the coil and at the back of the tach are OK. |
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