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 Post subject: Another non working tach
PostPosted: Mon May 20, 2013 4:16 am 
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Spends Too Much Time Under The Hood
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Location: Denver, Co
Ok, i been searching and reading over old posts and archives and i cannot find what could be wrong with my tach, first of all my Colt its a 1991 (never came with tach from factory), now its 4g63 swaped, donor car was a 90' DSM so coils are 90' with the tach filter as well.
Now i got a 1989 Mitsubishi Mirage turbo tach cluster, from what i been reading this tach cluster should work a soonest you install it because my donor wiring arness was a 90, well all the gauges works except tach and there is no sense running a wire from the tach filter to the inside of the car because its already on the 4 wire plug of the coil, what would you suggest to check or do? thanks

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91' Mitsubishi Colt 4G67T FWD "The Minion" - 12.26@118
94' Mitsubishi Galant GS 4g63 Swap "White Unicorn"
95' Eagle Talon Tsi FWD "Ernie's car" - 13.92@104 *Rest In Parts*


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PostPosted: Mon May 20, 2013 4:28 am 
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Location: Canton, GA
Have you tried this?

http://www.lilevo.com/turbo/tach/body_tach.html

At least to test to verify the cluster is good? I think it could be 1 of 3 things, cluster, tach adapter, or wiring. Just narrow them down, and eleminate possible causes.


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PostPosted: Tue May 21, 2013 2:45 am 
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Location: Denver, Co
Quote:

Thanks for the reply installer88, i did this today and the tach its working now but is not accurate, do you know what could cause this? about the fix right now im a little confused because this fix should apply just for a 4g63 swaps with 91-94 wiring isn't?

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91' Mitsubishi Colt 4G67T FWD "The Minion" - 12.26@118
94' Mitsubishi Galant GS 4g63 Swap "White Unicorn"
95' Eagle Talon Tsi FWD "Ernie's car" - 13.92@104 *Rest In Parts*


Last edited by Moulin13 on Tue May 21, 2013 4:41 pm, edited 1 time in total.

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PostPosted: Tue May 21, 2013 7:37 am 
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Location: Stantonsburg, NC
I would still run a separate wire. I know its already on the 4 wire plug but that wire splits off and is hooked to other wires in the harness.

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93 Mitsubishi Expo LRV 1.8/manual
95 Eagle Summit DL Coupe 1.5/manual
01 Mitsubishi Mirage ES Sedan 1.8/manual


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PostPosted: Tue May 21, 2013 4:39 pm 
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Joined: Fri Mar 22, 2013 2:25 am
Posts: 352
Location: Denver, Co
Quote:
I would still run a separate wire. I know its already on the 4 wire plug but that wire splits off and is hooked to other wires in the harness.
thats what i did, i just ran a straight wire from the white wire on the tach filter to the white wire that goes on C-19 plug, the question its why the rpms are not accurate?

_________________
91' Mitsubishi Colt 4G67T FWD "The Minion" - 12.26@118
94' Mitsubishi Galant GS 4g63 Swap "White Unicorn"
95' Eagle Talon Tsi FWD "Ernie's car" - 13.92@104 *Rest In Parts*


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