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  #1  
Old 09-05-2013, 08:26 AM
Alpha Alpha is offline
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Default 91 Ranger 3.0 Tach Stuck - Resolved

So Here's the deal. My father In-Law brought over his 91 Ford Ranger 3.0 XLT for a simple idle issue.
While looking in to it, I found a host of issues that I have resolved with the help of these forums and the interwebs.
However, many posts I reviewed did not often end with resolutions or feed back of a solution.
This is one of several posts I'm making to log my problems and fixes on this truck in hopes to return the help I've received.

Issue:
Tachometer "stuck" at ~3K RPMs.
Well, not really stuck, when the key is off, the tach reads 0. When the ignition is on, the tach jumps to about 3K RPMs and doesn't budge unless the RPMs exceed this value, then the tack needle moves forward accordingly.

Many solutions were to simply replace the tach and/or gauge cluster. I found these for reasonably cheap on ebay (~$50-75). However, the greater cause of this issue is a simple solder bond between two points on the tach's circuit board that have a tendency to break.

Solution:
I found this extremely informative walk through post on another forum site that walked through the removal/repair procedure in great detail.
http://www.explorerforum.com/forums/...d.php?t=275462
This worked like a charm and only took maybe an hour to do. One thing, on step five, the narrator states to use your fingers to pry the tach out of the cluster.... I found it easier to slip in a long thin slot head screw driver and pry up from more of the center of the gauge rather than prying from the edges... What the write up failed to mention was that the tach is held in to the cluster by 3 metal "prongs" that press in to corresponding retainers, and it is a snug fit.. Pull from the side may damage the plastic backing or mar the background of the gauge readout.
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  #2  
Old 09-05-2013, 08:27 AM
96_4x4_XLT 96_4x4_XLT is offline
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Pretty sure you have a 2.9 not a 3.0

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
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Old 09-05-2013, 08:40 AM
Alpha Alpha is offline
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Default Re: 91 Ranger 3.0 Tach Stuck - Resolved

The VIN has the engine model "U", 3.0; maybe Ford rounded up... I certainly wouldn't put it past them...
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Old 09-05-2013, 08:42 AM
96_4x4_XLT 96_4x4_XLT is offline
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Quote:
Originally Posted by Alpha View Post
The VIN has the engine model "U", 3.0; maybe Ford rounded up... I certainly wouldn't put it past them...
pretty sure the 3.0 started in 93
1st and 2ed gens
2.3, 2.9 4.0
3rd gens
2.3 3.0 4.0
4th gen
2.5 3.0 4.0
2.3 3.0 4.0 SOHC

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__________________
95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff
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  #5  
Old 09-05-2013, 08:52 AM
Alpha Alpha is offline
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Default Re: 91 Ranger 3.0 Tach Stuck - Resolved

The 91 was an oddball... it appears to be the only 1/2 gen that offered the 3.0 and not the 4.0...

In 1991, your Engine choices for the ranger were 2.3, 2.9 or 3.0

Your information is generally correct, however; the 1991 (as I'm quickly learning) did things a bit unique at times.
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  #6  
Old 06-26-2014, 08:37 PM
erikm erikm is offline
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Default Re: 91 Ranger 3.0 Tach Stuck - Resolved

i just bought a 1991 ext cab 2wd 3.0 5 spd... tach intermittently jumps about 1500 rpms and hangs there. will look into what the OP posted
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  #7  
Old 06-27-2014, 07:37 AM
ranger_ferd ranger_ferd is offline
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In 1990 they replaced the 2.9 with the 3.0, and came out with the 4.0
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