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Tach Problems

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Old Sep 13, 2004 | 01:25 PM
  #1  
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gomsu
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From: Northern Wisconsin
Tach Problems

I just bought a 1991 Ranger, STX 2WD with the 3.0L/V-6, 5 speed and 93,000 miles.

I've noticed one small problem, just wondering if there is a cheap,quick fix, if not, I'm not going to fix it. The tach will often jump up to about 3500RPM and just stay there for anywhere from 10 seconds to about a minute, it will then return to the normal RPM for the speed and gear being used. It will then do it again in a matter of a few seconds, but usually there will be a couple minutes inbetween the occurences of this.

Doesn't matter what gear I'm in, but I noticed it only does it when the cruise is set or I'm holding the gas steady.

Any suggestions on what's wrong.
 
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Old Sep 13, 2004 | 08:31 PM
  #2  
Ken00's Avatar
Ken00
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From: South Jersey
I would try pulling the codes, the tach might be showing an IDM problem in the ignition system, the tach is driven off of it.
 
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