Tach flutter trans related?

MattGE

Member
I finally got the Ty back on the road yesterday after installing my rebuilt trans. Everything seems to be going fine except my tachometer flutters like a mofo..especially at higher speeds. In fact when I'm at cruising speed my tach is reading around 9500 RPMs or 5lbs of boost, however you want to look at it. :roll: Before I installed the trans everything was doing fine. I did some serching and found that tach flutter is almost always ignition related. Are there any exeptions?
 

MattGE

Member
GM TURBO said:

The grounds still look good..not corroded. As a side note the optima battery was COMPLETELY dead before I recharged it. Do you think this is something alternator related? Maybe I put too much of a strain on the alternator initially before I charged it the right way. I just jumped it at first.
 

E-Rue

New member
i have an exception to that rule........

my ty had a crushed starter wire in the main harness behind the motor. i pulled it out and replaced it, and the tach flutter went away. my truck still however does not run quite right, and im starting to suspect a problem with the harness. problem is that its behind the motor, and a nightmare to get to.

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