Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

EGR low voltage :: !EGR or replace?

Thread Tools
 
Search this Thread
 
Old Sep 9, 2005 | 09:12 AM
  #1  
Geo99M6Z's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Apr 2004
Posts: 33
Likes: 0
From: Ohio
Default EGR low voltage :: !EGR or replace?

I have a 99 Z28, no major mods.

Exhaust cutout, ported MAF, high priced gasoline, two fresh bank 1 O2 sensors (2 days ago). 2 NEW knock sensors. New plugs/wires. 139k miles.

What is happening is on deceleration, the car surges, RPMs drop below 500 and then up again. Get the code for LOW EGR Voltage, I don't remember what the specific code is.

I am not sure what to do. Here are my options:

1. Brand new EGR
2. Used EGR
3. !EGR (however, I don't have a way to eliminate it out of the PCM)

Recommendations are welcome.
Reply
Old Sep 9, 2005 | 09:36 AM
  #2  
Z'mnypit's Avatar
10 Second Club
iTrader: (58)
 
Joined: Jan 2004
Posts: 2,708
Likes: 3
Default

Just take it all off & make you some block off plates. It will through SES light but will not hurt performance at all. I highly doubt the EGR is making your car surge & etc, more than likely its that ported MAF. Every since I ported mine, its been nothing but trouble. Finally bought a stock one & descreened it & thats it. That fixed alot of my problems. Just my .02
Reply
Old Sep 9, 2005 | 01:34 PM
  #3  
Geo99M6Z's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Apr 2004
Posts: 33
Likes: 0
From: Ohio
Default

It could be the MAF, but I have had it done for that past 4 years and I am just now having these problems, plus the SES code is being thrown for the EGR.

If I were having the surging problems before, I would have taken it into consideration. But it is always worth checking. Thanks for your reply.
Reply
Old Sep 9, 2005 | 01:53 PM
  #4  
Uno99's Avatar
TECH Resident
iTrader: (2)
 
Joined: Jul 2004
Posts: 894
Likes: 0
From: Appleton Wi
Default

Could be a vaccum leak or the MAF. I had some surging as well removed my SLP MAF no surging.
Reply
Old Sep 9, 2005 | 02:13 PM
  #5  
Uno99's Avatar
TECH Resident
iTrader: (2)
 
Joined: Jul 2004
Posts: 894
Likes: 0
From: Appleton Wi
Default

Remove it and be done with it.
Reply
Old Sep 9, 2005 | 02:42 PM
  #6  
Z'mnypit's Avatar
10 Second Club
iTrader: (58)
 
Joined: Jan 2004
Posts: 2,708
Likes: 3
Default

I can promise you the EGR has nothing to do with your surgeing. Hell, unplug it & see it it still does it.
Reply




All times are GMT -5. The time now is 04:01 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