PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

RPM Not Reading!

Thread Tools
 
Search this Thread
 
Old Nov 12, 2005 | 06:28 PM
  #1  
Mr Powell's Avatar
Thread Starter
8 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 10,121
Likes: 0
From: Friendswood
Default RPM Not Reading!

Ok so we pinned out my harness and got rid of the body control stuff, etc... Well what we did was cut the #10 wire short and ran our own wire. It goes about 3ft or so then is Y's into the Tach and the Window Switch. The problem is the tach does not read, and the Window switch will not read either. We have everything soldered together, no butt connectors,etc.. The PCM reads a RPM reading... I have a Alcatron unit that can tell RPM and stuff via a wire, like if you wanted to see if a tach should be working. It reads the RPM perfect if it is connected to the wire right before it Y's out. So we thought maybe it was the Y that was causing neither to work, so we just made some little connections using butt connectors and neither unit works.

Is there something I'm missing. I have the wires cut on both parts so its reading as a 4cyl like it should. Both units have worked before, but now we cannot figure out why they arent now.
Reply
Old Nov 12, 2005 | 09:47 PM
  #2  
TAQuickness's Avatar
TECH Junkie
iTrader: (28)
 
Joined: Jan 2004
Posts: 3,250
Likes: 1
From: Houston
Default

just throwing some obviouse out there

have you verified:
power
ground
ohmed out your wiring?
Reply




All times are GMT -5. The time now is 01:34 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE