Tach problem

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04-25-2010 | 08:24 PM

Toqwik

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Joined: Mar 2010

Posts: 36

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Tach problem

I am having problems with my tach. With the key off, the needle is pegged. When you crank it, it drops down to zero, then once it starts it goes back to pegged. Any ideas???

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04-26-2010 | 08:53 PM

91camarolover

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Joined: Apr 2010

Posts: 160

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From: Des Moines IA

Car: 91 RS, 84 Z28, 85 Iroc-z

Engine: 3.1L, 350 4 bolt, 350 TPI

Transmission: 700R4, 700R4, 700R4

Axle/Gears: 3.23, Unknown, Unknown posi

Re: Tach problem

I have the same problem...

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04-26-2010 | 09:04 PM

Dustytrix

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Joined: May 2009

Posts: 410

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From: Petal Ms.

Car: 1990 Iroc

Engine: 6.0

Transmission: 4l65E

Axle/Gears: 373 zexel torsen

Re: Tach problem

There is a tech article at home page I think. It tells about putting in a new resistor or diode I cant remember which, but I followed the steps and mine works perfect now. If you cant find it let me know and I,ll try to help more.

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04-26-2010 | 09:07 PM

91camarolover

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iTrader: (1)

Joined: Apr 2010

Posts: 160

Likes: 1

From: Des Moines IA

Car: 91 RS, 84 Z28, 85 Iroc-z

Engine: 3.1L, 350 4 bolt, 350 TPI

Transmission: 700R4, 700R4, 700R4

Axle/Gears: 3.23, Unknown, Unknown posi

Re: Tach problem

Yeah I just found it heres the link https://www.thirdgen.org/forums/elec...meter-fix.html

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04-27-2010 | 03:29 PM

rileycamaro

Junior Member

Joined: Apr 2010

Posts: 5

Likes: 0

From: Columbus Ohio

Car: 89 Iroc z

Engine: 305 (5.0) TPI

Transmission: 5 speed

Re: Tach problem

i just bought an 89 iroc, the tachometer doesnt work, the oil pressure gauge does not work, and also the speedometer doesnt work. the previous owner told me the speedometer used to work before he put the original 305 engine back in. i dont know how i can get them to work. PLEASE HELP ME!!

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