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Old 08-12-2013, 07:03 PM   #1
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Autometer Monster Tach

My wife bought a New Old Stock Ford Motorsports monster tach with external shift lite for her 92. It was still in the box and plastic wrap. I put it in the car over the weekend. It came with a duraspark type plug made on the wires. I cut that off and hooked it up Red-switched 12v, Black-Ground, Green-tach(-), white- dash lights. It works, except it is reading 700 rpm too high across the rpm range. I took another monster tach I have apart and looked inside. There are 3 pots on the circuit board.

I searched and searched all over the internet and did not find anything about tweaking those pots. Short of sending it to autometer and getting it recalibrated, does anybody know if one of those pots is the zero adjustment?
I figured maybe the duraspark system still used the ballast resistor and had closer to 8 volts on the coil than the 1992 with 14 volts on the coil. I read 12.8 on the minus side of the coil with it running. I was going to call autometer today, but had lots of breakdowns out in the field and didn't get to the office.

I know everyone will probably say just get rid of it and get a tach that is right for the car. But momma likes it. It is cool looking with the white face gauge and says ford racing and SVO on the face. In fact, she likes it even tho it is inaccurate, since it is cool looking. I have a spare regular monster tach with black face that works and she won't let me put it in the car.

thanks, and I apologize for the long post
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Old 08-12-2013, 07:11 PM   #2
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Old 08-12-2013, 09:32 PM   #3
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I've got the same tach I've never had any problems out of it...are you sure the car isn't just idling at 1500?
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Old 08-12-2013, 09:47 PM   #4
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It's idling at about 750. I hooked up my other tach. And checked the pulses of the coil with my DIgital meter on hertz. The tach in question goes to 700 with key on engine off also. I will try to call autometer tomorrow.

Did yours come with duraspark connector when was new?
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Old 08-12-2013, 10:41 PM   #5
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I didn't get mine new man I have mine wired exactly how your explained yours is wired

---------- Post added at 09:41 PM ---------- Previous post was at 09:40 PM ----------

And my car is a 92 also...I'd just give autometer a call it sounds like the problem isn't your car or the wiring
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Old 08-16-2013, 03:54 AM   #6
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I want a wife causes problems like getting her monster tach mounted in her foxbody...
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Old 08-16-2013, 09:46 AM   #7
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Quote:
Originally Posted by scottydsntknow View Post
I want a wife causes problems like getting her monster tach mounted in her foxbody...
Be careful what u wish for! She is the reason all 3 stangs are Black also. Trying to keep them looking good is a nightmare
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Old 08-16-2013, 11:51 AM   #8
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Lol! I need to trade my nightmare in for yours!
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Old 08-21-2013, 01:52 AM   #9
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Monster Tach.

Do you still have the Autometer Monster tach apart? I have one that has a burnt resistor on the board but it discolored the rings on the resistor and I cant tell what value it is to replace it. can you send me a picture of the board with the resistor so i can fix mine? on the board it is labled at "R1". reply to my email please if you can do this.
Thank you,
Jon
jsergent01@gmail.com
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Old 08-28-2013, 05:42 PM   #10
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I sent it to autometer. They said is not repairable, and obsolete. So, they are building another one just like it for me. $179 They are a great company to deal with.
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Old 08-31-2013, 11:01 AM   #11
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Nice! That's great customer service! Good to know they stand behind their product!
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