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tachcometer

Started by ISOAR, October 28, 2012, 04:34:30 PM

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ISOAR

October 28, 2012, 04:34:30 PM
Time to address my faulty tach on my kammback. When I turn the key to on position (w/o starting the engine) the needle goes to 4500rpm. After starting the engine , at idle, the needle creeps up to 5000 then up to 5500. Does this sound like a bad tach or just a bad ground or something else. The engine is never running that fast. Any ideas would be appreciated.

carnuck

#1
October 28, 2012, 04:43:12 PM
Quote from: ISOAR on October 28, 2012, 04:34:30 PM
Time to address my faulty tach on my kammback. When I turn the key to on position (w/o starting the engine) the needle goes to 4500rpm. After starting the engine , at idle, the needle creeps up to 5000 then up to 5500. Does this sound like a bad tach or just a bad ground or something else. The engine is never running that fast. Any ideas would be appreciated.

Sounds like a bad body to battery ground feedback is causing the problem (hopefully it didn't burn it out)
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

ISOAR

#2
October 28, 2012, 04:52:07 PM
Thanks, I'll double check the ground when I get home.

eaglebeek

#3
October 28, 2012, 05:25:17 PM
If you can't get it working check out this thread: http://forums.amceaglenest.com/index.php?topic=38155.0 :eagle:
1984 Eagle Wagon, 258, auto, 2.73 gears, daily driver
1983 Eagle Limited Wagon, parts; sold
2000 Jeep Cherokee, 4.0, auto
2007 Hyundai Accent, radical downsize from minivan, wife's car and she loves it!

"The society which scorns excellence in plumbing as a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy: neither its pipes nor its theories will hold water."--John W. Gardner, in "Excellence: Can We Be Equal and Excellent Too?" (1961)

Air-conditioning is so cool!

ISOAR

#4
October 28, 2012, 05:37:53 PM
Quote from: eaglebeek on October 28, 2012, 05:25:17 PM
If you can't get it working check out this thread: http://forums.amceaglenest.com/index.php?topic=38155.0 :eagle:
Thanks, I've seen that thread from vangremlin. It's excellent. If I can't get mine going, I will certainly give that a shot.

shanebo

#5
November 10, 2012, 02:36:05 AM
If you do figure it out let me know, I've had several eagles with the tach and only one ever works....for like a month....then it too did the bouncy thing before completly kicking the bucket. I never did try tearing into one of these.
AMC, serving up heaping helpings of AWESOME since 1954

ISOAR

#6
November 14, 2012, 12:34:56 PM
Quote from: shanebo on November 10, 2012, 02:36:05 AM
If you do figure it out let me know, I've had several eagles with the tach and only one ever works....for like a month....then it too did the bouncy thing before completly kicking the bucket. I never did try tearing into one of these.
Still working on a solution for the tach. I still think it is ground related...hope to find out for sure in next couple of days.

ISOAR

#7
December 06, 2012, 12:19:32 PM
Quote from: shanebo on November 10, 2012, 02:36:05 AM
If you do figure it out let me know, I've had several eagles with the tach and only one ever works....for like a month....then it too did the bouncy thing before completly kicking the bucket. I never did try tearing into one of these.
Gave up on the stock tach and went the Vangremlin way. It came out really nice.
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