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2005-2010 Mustang Talk Forum

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Unread 11-29-2010   #1 (permalink)
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Default Going to replace the stepper motors in my gauge cluster.

For those of you who don't know what they are, they are the motors of the speedo, tach, oil,temp,volts and fuel gauges. (6 total) I purchased them off ebay tonight so I'll have to wait until they're delivered. Only 2 were giving me problems, but after doing research on it, I've discovered that the 05's stepper motors are prone to failure and since I'm going to have to pull the dash apart, I might as well do them all. It seems a little involved, but I'm up to the challenge. In my opinion, it think it should have been a Ford recall but oh well. Right now, the oil pressure gauge reads at about 11 o'clock and the tach is choppy as it rises.
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Unread 11-29-2010   #2 (permalink)
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take pics and write down the tools needed and steps!
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Unread 11-29-2010   #3 (permalink)
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that guy on ebay gives you instructions and will even give phone help if you have any problems. theres been a few members on here that have done it. beats the price of a new cluster big time. shouldnt be too hard.
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Unread 11-29-2010   #4 (permalink)
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My gauges haven't started to screw up yet, but I figure it's only a matter of time before they do. As such I've bought some steppers preemptively and am ready to strike when the time comes. Iíve read the write-ups and the most annoying part appears to be setting the steppers back to zero, then installing the needles to read correctly. Iím guessing that itís a multi-layer board and pulling the old steppers off/clearing the holes may be annoying too. Definitely let us know how it goes.
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Unread 12-01-2010   #5 (permalink)
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heh ... looks like I spoke too soon, temp gauge went out today. So I know what I'll be doing this weekend.
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Unread 12-02-2010   #6 (permalink)
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Quote:
Originally Posted by stars View Post
heh ... looks like I spoke too soon, temp gauge went out today. So I know what I'll be doing this weekend.
I hope I didn't jinx you.:laughlitt
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Unread 12-02-2010   #7 (permalink)
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Unsoldering the old stepper motors is tedious, but not hard.

- Just heat the end of each pin (there are four for each motor) while pulling on the motor with your fingers from the opposite side (like you are trying to pluck the motor off the board).

- The motor pins will gradually pull out as you keep heating them and gently pulling on the motor at the same time. After the motor is off you can use a solder sucker or solder wick (which I did), to pull the excess solder out of the holes and clear them out.

- When you put the new motor on the board the pins may not go into the holes because its not completely clear of solder. You have to push them in gently and at the same time use the iron to heat the opposite side of the hole. The motor will gradually push in as you apply heat and work each pin into the board until the motor sits completely flat. Then add a little solder to make a good connection.

Setting the stepper motors to zero is not hard as long as you remember that the tach, speedo and two of the center gauges swing counterclockwise to zero, and the other two in the center go clockwise to zero.

Bruce
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Unread 12-02-2010   #8 (permalink)
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Well I took the steppers on today. Took me about three hours total, but everythingís working . The scariest part was getting the needles off. The gas and temp gauges came off ok with finger pressure, but the tach and speedometer were really on there (4 gauge cluster). Ended up cutting a piece of cardboard out of a cereal box to protect the face of the gauges and using a forked upholstery tool to pry off the needles, and they still didnít come easy, thought I was going to break something. Used solder wick and a sewing needle to clear the solder holes. The new steppers just pressed in nice. Used a low temp solder alloy to solder the pins. Most annoying part was getting the needle zero correct, took me about 20 minutes to get the needles where I wanted them. Problem was when the cluster was powered up the needles would move to a slightly different set position than their mechanical stop point. Hopefully these steppers will last a good long while.
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