LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Stalling while driving

Old Apr 20, 2018 | 01:32 AM
  #1  
MCSMASHING's Avatar
Thread Starter
Teching In
 
Joined: Apr 2018
Posts: 4
Likes: 0
Default Stalling while driving

Hi, I'm new hear. I need some help.
My car started to lose power as i was driving on the highway. I recently changed spark plus oil change and radiator flush. Car started to shut off at low ideal. 500 rpm or so. But today, as i was driving down the highway at about 2300 rpm, the engine hesitated. A little later it seem like it shut off or lack of power, and immediately resumed. And then the rpm dropped and then back up. At one point even shut off completely. I had to crank the engine on neutral. Now even driving around the block is an issue. I just changed the battery and alternator,but nothing. This vehicle is a 88 Chevy Monte Carlo LS, not stock by any means.the set is this:
6.0 vortec with a edelbrock rpm intake and msd block attached to the factory coils.
Quick fuel 750 double pumper carb.
Inline holley red fuel pump.
Ngk irdium sparkplus gapped at .40
Taylor tunder cables.
Headers with Y connection to single flowmaster to dual tips.
700r4
Basically it was an engine swap with computer elimination. I plan on exchanging the spark plugs and doing a compression check. A year ago I had 160 psi. A month ago, the guy who tuned my carb said im down to 130. He had suggested a spark plug change due too all the air/fuel ratios I had played with. Oh and I'm having backfires as a result. Not sure if its at the carb or at the exhaust.

Last edited by MCSMASHING; Apr 20, 2018 at 01:38 AM. Reason: Left out a detail
Reply
Old Apr 22, 2018 | 06:19 AM
  #2  
Red_Zone's Avatar
Launching!
 
Joined: May 2013
Posts: 218
Likes: 1
From: CANADA
Default

1988 ?

Um... do those things use... like... distributors and um....

Hell I dunno... why did you post here in an LS4 motor forum?
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:47 AM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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