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I'm new here and I found this site after looking around for information on the engine in my Summit. My question is basicly, "Does anyone have a clue why my tach won't work?", The positive is hooked into the cigarette lighter, negative is a chassis ground, and the pickup is at the 2 wire thing by the intake (which I've seen someone else do in another tach post). The light comes on in the tach when the dash lights/headlights are turned on (the wire is hooked to the cigarette lighter light) and I just re-checked the ground/power today and it's all good, even the 12v pulse@#1 cylinder coming off the 2 wire thing is good, it's set to 4 cylinder on the back also, anyone have a clue?

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Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

Bad tach?

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Witty Signature Goes Here!

i heard something about mechanical tachs a while back...but i dont think yours is...

ask normsummit he put in a tach in his c50 summit(i have seen it)

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1983 Honda VF750F
1986 Chevrolet C-10 305
1990 Eagle Summit ES 4g63na 5spd
1990 Chevrolet Corvette L98
1996 GMC Suburban 454
1999 Volvo S70 AWD L.P.T

now what about your tach signal wire? did you even hook it up?

-Paul

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I own a CSM.
I live my life 1 repair at a time.
Nothing matters...not my crew...my bills, nor my friends drama...
For those 10 months or less... I'm broke...

I don't mean to steal anyone else's picture but it's hooked up exactly like this:

http://www.ce.rit.edu/~mezz/gallery/ran ... ach_hookup

When I tested (using +/- battery and the line it's hooked up to at the moment) it before installing, it worked fine.

::edited by paul to put a link to the picture instead of a img tag::

_________________
Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

It's been almost 3 days and no one has a clue?

_________________
Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

im stumped.....it shoul work....its been awhile since i had my tach in my car before i swapped in the factory tach cluster

_________________
I own a CSM.
I live my life 1 repair at a time.
Nothing matters...not my crew...my bills, nor my friends drama...
For those 10 months or less... I'm broke...

If anyone has a cluster w/tach I would be grateful if I could get it (as long as it isn't hundreds of dollars). I always found that strange, it's a manual from the factory and there's no tach.

_________________
Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

did you try to grab the signal from the other side of the tach filter?

it could have gone bad.

on my 4g15 i tried the tach wire that sould be right but it didn;t work.. try the other wire off the dist.one by one till you find it.. thats how i did it wont hurt anything while doin it

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http://www.clubgp.com/newforum/upfiles/ ... d93156.gif

What wire off the distributer? I don't see any other wires by my dist. except for one that I looked up to be a ground. It's round with 4 connections (for the plugs) and one post type thing that has a rubber cover over it. I haven't seen any other kinds of wires in my service manual either, if there is, please let me know which one, I really want to get this thing working. It's so annoying to have it there and know it's hooked up but it's not working, like it's mocking me. lol

_________________
Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

Get signal wire at the ecu

Worked justfine for me!

Could you post a picture of it so I can see where to hook it up? Also, are you using the same computer that would be in my 1991 summit with the 12v 4g15?

_________________
Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

i had mine hooked up to my dist. it was an orange wire that i used(only one i got a sig. from), but after talking to berserko, he told me which wire to use.

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