Frusterated with new tach!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ts71281 · 09-10-2003, 03:52 PM

Hey gang,

Hoping someone in here has done this before. I recently bought an instrument cluster from a board member that was supposed to be brand new

But that's another story. The camaro guage in the cluster appeared to be in new or like new shape unlike some of the other guages but once again, that's a whole different story. Here's my question. There's a red wire and a brown wire coming out of the back of the cluster from the camaro tach. I hooked the brown wire up to the negative side of my coil and the red wire had a plug on it that fit down in my fuse block inside the truck. At idle the tach only reads 400 rpm's and when at 60 mph the tach only reads 2200 rpm's and with another tach that's known to be good is hooked up it reads 3000 rpm's. I trust the known good tach before this camaro one. What's interesting is the fact when I get on it hard out on the highway the tach needle shoots up to 7 grand so fast it's crazy and the engine isn't anywhere higher than 5500 rpm's according to the known good tach. Then after letting off the gas the tach needle sticks around 3500rpm's and doesn't come back down until the engine comes back to an idle. then it falls back to 400 RPM's. What does this sound like to you guys? Stuck tach needle? Missing ground? I'm lost here. Any info on these camaro tach setups would be great or did I just get screwed out of a $350 isntrument cluster??? I'm getting more upset everyday over this piece. Hopefully you guys can help me remedy my problem. Thanks ahead of time for any info!

Joe Hirdler

*rickspickuppart* · 09-10-2003, 04:20 PM

look inside and make sure the needle arm isn't bent and dragging on the face (some if not most of the brand new units I sell I have to take apart and fix before we sell them because the are rubbing)

*rickspickuppart* · 09-10-2003, 04:23 PM

Joe,
after I saw your name I had to check my invoice program and make sure the unit didn't come from us (thought one of them escaped without being checked)

ts71281 · 09-10-2003, 04:28 PM

Shaun,

What's the best way to make sure the needle doesn't come in contact with the face? Can I move the needle back and forth or will that damage the tach? I cannot afford to break anything since I paid so much for this POS in the first place. If you could give me step by step instructions to do this properly that would be great. You can start the instructions assuming I have the dash out already, I can make it that far myself

Thanks again! Oh and by the way Shaun, those bumper brackets and license plate bracket you sent me along with the new cluster face all turned out beautiful. Thanks for the great parts.

Joe Hirdler
Maple Grove, MN

09-10-2003, 03:52 PM	#1
ts71281 Registered User Join Date: Apr 2003 Location: Maple Grove, MN Posts: 497	Frusterated with new tach!!! Hey gang, Hoping someone in here has done this before. I recently bought an instrument cluster from a board member that was supposed to be brand new But that's another story. The camaro guage in the cluster appeared to be in new or like new shape unlike some of the other guages but once again, that's a whole different story. Here's my question. There's a red wire and a brown wire coming out of the back of the cluster from the camaro tach. I hooked the brown wire up to the negative side of my coil and the red wire had a plug on it that fit down in my fuse block inside the truck. At idle the tach only reads 400 rpm's and when at 60 mph the tach only reads 2200 rpm's and with another tach that's known to be good is hooked up it reads 3000 rpm's. I trust the known good tach before this camaro one. What's interesting is the fact when I get on it hard out on the highway the tach needle shoots up to 7 grand so fast it's crazy and the engine isn't anywhere higher than 5500 rpm's according to the known good tach. Then after letting off the gas the tach needle sticks around 3500rpm's and doesn't come back down until the engine comes back to an idle. then it falls back to 400 RPM's. What does this sound like to you guys? Stuck tach needle? Missing ground? I'm lost here. Any info on these camaro tach setups would be great or did I just get screwed out of a $350 isntrument cluster??? I'm getting more upset everyday over this piece. Hopefully you guys can help me remedy my problem. Thanks ahead of time for any info! Joe Hirdler

09-10-2003, 04:20 PM	#2
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	look inside and make sure the needle arm isn't bent and dragging on the face (some if not most of the brand new units I sell I have to take apart and fix before we sell them because the are rubbing)

09-10-2003, 04:23 PM	#3
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	Joe, after I saw your name I had to check my invoice program and make sure the unit didn't come from us (thought one of them escaped without being checked)

09-10-2003, 04:28 PM	#4
ts71281 Registered User Join Date: Apr 2003 Location: Maple Grove, MN Posts: 497	Shaun, What's the best way to make sure the needle doesn't come in contact with the face? Can I move the needle back and forth or will that damage the tach? I cannot afford to break anything since I paid so much for this POS in the first place. If you could give me step by step instructions to do this properly that would be great. You can start the instructions assuming I have the dash out already, I can make it that far myself Thanks again! Oh and by the way Shaun, those bumper brackets and license plate bracket you sent me along with the new cluster face all turned out beautiful. Thanks for the great parts. Joe Hirdler Maple Grove, MN



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