Tach Reading is Incorrect
08-08-2006, 01:23 AM
#1
1st Gear Member
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Join Date: Jan 2006
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Posts: 78
Tach Reading is Incorrect
I have a 140 mph gauge cluster and the tach floats. By float I mean that the tach sometimes stays at 1k rpm. When I know I am turning 2K rpms the tach is at 3K rpm. I replaced the sending unit on the distributor and still the tach floats. I bought a different gauge cluster and the tach still floats and reads higher than actual. What else can I change out to find the cause of this problem?
[IMG]local://upfiles/27757/8812AAE781454A3CA8D4202C412F9722.jpg[/IMG]
[IMG]local://upfiles/27757/8812AAE781454A3CA8D4202C412F9722.jpg[/IMG]
08-08-2006, 01:26 AM
#2
5th Gear Member
Join Date: Mar 2006
Location: Greenville SC
Posts: 2,317
RE: Tach Reading is Incorrect
buy an Autometer tach. The stock ones just suck plain and simple.
This is why people run a 5" monster tach in their cars for the people always making fun of people running them.
Sometimes when im driving, ill look at my stock tach, it says 1,800 and i look at my autometer and its at 2,400...thats a huge difference.
This is why people run a 5" monster tach in their cars for the people always making fun of people running them.
Sometimes when im driving, ill look at my stock tach, it says 1,800 and i look at my autometer and its at 2,400...thats a huge difference.
08-28-2006, 04:21 AM
#3
1st Gear Member
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Join Date: Jan 2006
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Posts: 78
RE: Tach Reading is Incorrect
I fixed it. I bought a new coil after I discovered that the old coil had a bunch of dirt and grease on the pickup connections for the tach. The tach works good as new now! A $30 fix versus $100 for an aftermarket tach.
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