Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

What is wrong with this car!!!!

Thread Tools
 
Search this Thread
 
Old May 26, 2007 | 02:39 PM
  #1  
sevanseriesta's Avatar
Thread Starter
TECH Fanatic
iTrader: (34)
 
Joined: Sep 2003
Posts: 1,293
Likes: 1
From: Gardner, KS
Default What is wrong with this car!!!!

I am talking about a ms4 and heads car. With all the supporting mods. Motor is a fresh build. Here is what the problem is

Car for over 300 miles ran perfectly fine. After that it seemed like it was bogged down the whole time. You could floor it and it would hardly do anything. Fuel pressure gauge (which i am not sure is correct) was reading 60 to 65 psi. Before that it was reading 90 PSi. Know I know that there is no possible way that the car was running 90 psi. But It just seems weird that the car has had problems ever since it dropped from 90 to 60. Changed the 02 sensors and this did not fix the problem. Checked all the plugs. They looked fine except that they look like that they may have been running lean. (kind of a white residue on the plugs.) The car has a mail order tune on it. But it should be pretty close. Anybody had this problem at all or know what I should look at.

And NO this is not my car. This is a heads/cam car!
Reply
Old May 26, 2007 | 02:57 PM
  #2  
LS1rulz's Avatar
TECH Regular
iTrader: (1)
 
Joined: Nov 2006
Posts: 439
Likes: 0
From: Greenup, Kentucky
Default

Have somebody hook some tuning software to it and see what it's doing. Easy enough.
Reply
Old May 26, 2007 | 03:02 PM
  #3  
sevanseriesta's Avatar
Thread Starter
TECH Fanatic
iTrader: (34)
 
Joined: Sep 2003
Posts: 1,293
Likes: 1
From: Gardner, KS
Default

I wish that I had tunning software so I could do that. Otherwise I would not even be asking!
Reply
Old May 26, 2007 | 11:46 PM
  #4  
samgm2's Avatar
Staging Lane
 
Joined: Jun 2004
Posts: 76
Likes: 0
Default

It could be the MAF. The fuel thing sounds like an aside. A symptom of a Failing MAF.

Sam

Originally Posted by sevanseriesta
I am talking about a ms4 and heads car. With all the supporting mods. Motor is a fresh build. Here is what the problem is

Car for over 300 miles ran perfectly fine. After that it seemed like it was bogged down the whole time. You could floor it and it would hardly do anything. Fuel pressure gauge (which i am not sure is correct) was reading 60 to 65 psi. Before that it was reading 90 PSi. Know I know that there is no possible way that the car was running 90 psi. But It just seems weird that the car has had problems ever since it dropped from 90 to 60. Changed the 02 sensors and this did not fix the problem. Checked all the plugs. They looked fine except that they look like that they may have been running lean. (kind of a white residue on the plugs.) The car has a mail order tune on it. But it should be pretty close. Anybody had this problem at all or know what I should look at.

And NO this is not my car. This is a heads/cam car!
Reply




All times are GMT -5. The time now is 02:14 AM.

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