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12-17-2003, 02:23 AM
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#1 |
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Registered User
Join Date: Aug 2003
Location: Stockbridge, GA (Suburbs of Atlanta)
Posts: 126
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Factory Tach and gas gauge
I have a 1977 K-20 with a factory tach in it. The tack seems to be about 2k off, high. When I flip the dual tank switch the tach jumps but still reads high, has anybody seen or have any ideas on this problem? Also, seem times the gas gauge works and some times it doesn't. It seems like when the truck sets for a few hours it works and after she gets warmed up, it goes to "E".
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12-17-2003, 03:15 AM
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#2 |
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Collector of rusty Items
Join Date: Dec 2001
Location: Sisters,Oregon USA
Posts: 731
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Welcome to the Board.
I would check your voltage regulator. The Gas guage is really a volt meter that is measuing off of a known voltage. If the regulator is bad, that known voltage is off and the guage reads wrong. THe tach is unknown to me. Good luck
__________________
Scrub Sisters, Oregon - Home of the Sisters Rodeo. 70 GMC 1,000,000 + miles 72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends. |
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