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91 camaro rs lo3 tach not working

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Old Sep 21, 2013 | 09:09 AM
  #1  
brockliby's Avatar
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From: Coldwater, mi
Car: 91 camaro rs
Engine: LO3
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 axle 2.73 gears
91 camaro rs lo3 tach not working

so this is my first post here guys. ive already used this site gobs for tech info since i got my rs about two weeks ago. always wanted one since i was about 5. just got the trans mount and master cylinder replaced yesterday. every thing is working well but the instrument cluster. tach is going nuts which ive found that a lot of them are like that. but ive been searching for someone who would repair it because to get one that is guaranteed to work is 500 bucks. anyone got any contacts for refurbishing these bad boys? or a good vendor to buy a working one from that has a money back guarantee?
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Old Sep 21, 2013 | 12:00 PM
  #2  
Yenipenny's Avatar
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Car: 92 RS Heritage
Engine: 305
Re: 91 camaro rs lo3 tach not working

There is a sticky thread on here somewhere that gives the procedures to repair the tach. It's a relatively easy project. The cost for parts is less than $2.00. Add about $20. if you have to buy a small, low heat soldering iron.
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Old Sep 21, 2013 | 08:24 PM
  #3  
brockliby's Avatar
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From: Coldwater, mi
Car: 91 camaro rs
Engine: LO3
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 axle 2.73 gears
Re: 91 camaro rs lo3 tach not working

ok im going to continue to look for the thread until then if anyone could post a link would be greatly apreciated thanks in advance.
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Old Sep 21, 2013 | 08:38 PM
  #4  
Spaceboy1980's Avatar
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From: TN
Car: 1990 Camaro RS
Engine: L31
Transmission: 700R4
Re: 91 camaro rs lo3 tach not working

https://www.thirdgen.org/forums/elec...meter-fix.html

I fixed mine using this guide.
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Old Sep 21, 2013 | 08:49 PM
  #5  
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From: Coldwater, mi
Car: 91 camaro rs
Engine: LO3
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 axle 2.73 gears
Re: 91 camaro rs lo3 tach not working

omg now that is some homework. i guess tommorow im going to sit down and do some learning. no experience with stuff like this (using an ohmeter, soldering, so on) thanks so much Spaceboy1980 for the reference was driving myself crazy looking for the thread. idk though this is pretty intimidating will let you guys know what happens but if anyone here is confident and wants to fix it for me i would rather pay someone else to do it....not kidding. but i always like to save a buck so i might try depending on how i feel after reading.
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Old Sep 22, 2013 | 10:07 AM
  #6  
brockliby's Avatar
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From: Coldwater, mi
Car: 91 camaro rs
Engine: LO3
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 axle 2.73 gears
Re: 91 camaro rs lo3 tach not working

wow guys actually its not that difficult besides the soldering. which i have no experience doing but i could find someone who does locally. after reading and understanding the logic behind this its pretty impressive what 92 blue did. im assuming that mine has continuity because i registers about double at idle so im going to snip the legs. which theoretically i think it would work if you snipped the legs either way??? just a thought. thanks for the help guys.
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Old Sep 22, 2013 | 11:54 AM
  #7  
Yenipenny's Avatar
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Car: 92 RS Heritage
Engine: 305
Re: 91 camaro rs lo3 tach not working

Originally Posted by brockliby
wow guys actually its not that difficult besides the soldering. which i have no experience doing but i could find someone who does locally. after reading and understanding the logic behind this its pretty impressive what 92 blue did. im assuming that mine has continuity because i registers about double at idle so im going to snip the legs. which theoretically i think it would work if you snipped the legs either way??? just a thought. thanks for the help guys.
Just follow the instructions and you'll do fine. I've repaired a couple of tachs using this method.
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Old Dec 19, 2013 | 10:35 AM
  #8  
gcj280's Avatar
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From: Shreveport, La
Car: 1987 Iroc Z
Engine: 355 TPI Fully Built
Transmission: Borg Warner WC 5-Speed
Axle/Gears: Stock Posi Rearend
Re: 91 camaro rs lo3 tach not working

If you are not confident in your soldering skills or just don't want to bother with it, I sell repaired tach chips for 90-92 camaros and replacement tachs for 82-89 camaros for $35 including shipping + $10 core. If you send me yours as a core, I will deduct the $10.

thanks, Greg

Last edited by gcj280; Dec 19, 2013 at 01:32 PM.
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Old Dec 19, 2013 | 11:19 AM
  #9  
Joe Tag's Avatar
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Re: 91 camaro rs lo3 tach not working

I see you pimping your service all over these boards, you do know you need to be a supporter or vendor to do so don't you? Seems kind of unfair to those that are paying their fees.
Originally Posted by gcj280
If you are not confident in your soldering skills or just don't want to bother with it, I sell repaired tach chips for 90-92 camaros and replacement tachs for 82-89 camaros for $35 including shipping. I would need yours as a core.

thanks, Greg
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Old Dec 19, 2013 | 11:59 AM
  #10  
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From: Shreveport, La
Car: 1987 Iroc Z
Engine: 355 TPI Fully Built
Transmission: Borg Warner WC 5-Speed
Axle/Gears: Stock Posi Rearend
Re: 91 camaro rs lo3 tach not working

I didn't mean to step on anyone's toes. I am only trying to help out the members of this community by offering repaired parts at a good price that are otherwise unobtainable or too exspensive. I sell repaired tachs. Not a service. A core is optional. I understand that interjecting a sales pitch in a thread is a bit taboo, but since the OP asked who fixes them, I offered a solution.

Thanks, Greg

Last edited by gcj280; Dec 19, 2013 at 01:31 PM.
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Old Dec 19, 2013 | 12:32 PM
  #11  
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Re: 91 camaro rs lo3 tach not working

I don't make the rules, nor am I a supporter or vendor. Not stepping on my toes. But I do know there are fees for providing services here. Even if it's just a virtual service with no physical product involved like chip burning.
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