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Another no-tach issue

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Old 03-05-2018, 08:58 PM
  #1  
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Default Another no-tach - fixed.

car is a 95.5, 3 wire coil - MSlabs ms2 basic

problem solved,

depinned b/w wire from 1f, and repinned into blank spot into 2I, tach works fine now.

Last edited by trance|ghost; 03-07-2018 at 07:46 PM.
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Old 03-06-2018, 10:51 AM
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From trubokitty.com:

"Using a spare 1K resistor from your assembly kit and jump IG- and B+ in your diagnostics box (located near the driver shock tower). Shape the resistor into a wide “U” and trim the legs down so it fits inside the cover. Make sure it doesn’t touch any other pins -- B+ connects directly to the battery."


This should restore signal to your tach gauge.

Last edited by mj1176; 03-06-2018 at 10:52 AM. Reason: clarification
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Old 03-06-2018, 10:53 AM
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Thats the pullup for a diy MS3. I could be mistaken but almost positive the Rev units have that internally.
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Old 03-06-2018, 10:55 AM
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I thought that fix only worked for the 94-95.5 cars

my car is a later build 95

ive been trying to confirm with rev this issue, I know the ms2e has a tach output, but not sure if it was catered specifically to the late 95 model car I have
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Old 03-06-2018, 10:56 AM
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I just figured out I have the ms2e as well

owner claimed it was an ms3 who I purchased it from, however there is no sd slot, just realized this now, ugh
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Old 03-06-2018, 11:01 AM
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that fix wont work on 3-pin setups. make sure tach is enabled in software
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Old 03-06-2018, 11:03 AM
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Originally Posted by Braineack
that fix wont work on 3-pin setups. make sure tach is enabled in software
tach is enabled, tuner studio shows the rpm fine

nada on cluster.
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Old 03-06-2018, 11:04 AM
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Ha, well you know what they say... easiest way to get the right answer on the internet is for someone else to post the wrong answer
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Old 03-06-2018, 11:32 AM
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Originally Posted by mj1176
Ha, well you know what they say... easiest way to get the right answer on the internet is for someone else to post the wrong answer
I was about to go grab a resistor regardless! haha guess I'll have to keep hunting for a solution! total bummer on my end
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Old 03-06-2018, 11:33 AM
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worth a shot, can't hurt anything
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Old 03-06-2018, 09:09 PM
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Solved

I wish someone made this a sticky for others to easily find

just had to depin the factory harness at 1f, for the 3 wire coil cars, and repin to 2i

problem solved

Last edited by trance|ghost; 03-06-2018 at 10:10 PM.
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Old 03-06-2018, 10:12 PM
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Have you tried this?

EDIT: skip to 14m51s
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Old 03-06-2018, 10:14 PM
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I already solved the issue

it was super simple... only applies for 95.5 - 96 obd1.5 cars, the wierd ones... just gotta move a pin on the factory harness, 5 min fix

took two days to realize it however
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Old 03-12-2024, 02:36 PM
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Default Mine was just the opposite

[QUOTE=trance|ghost;1470211]
car Early 95 Miata
My 1f pin was empty and the 2I had the black/white coil wire. I depinned 2I and moved it to 1f and now my tachometer works. MSPNP2
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