C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

88 running like crud

Thread Tools
 
Search this Thread
 
Old Sep 23, 2010 | 01:18 PM
  #1  
Vetster88's Avatar
Vetster88
Thread Starter
Racer
 
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Default 88 running like crud

OK this all started after I accidentally ran out of gas going to a gas station... (sending unit false read).

I went on a 58 mile trip at mile 38 the car was bucking and jerking on the highway... check engine light would come on. the more RPM the better it ran but it wouldnt run good for long and the MPG's dropped from 32 to 13 just before it started to act up. Code 44 (lean exhaust) showed up but yet black smoke would puff out when under acceleration.

Got it home

Replaced the O2 sensor, and plugs... it would spit and sputter, buck and jerk, + poor fuel mileage.

Alternator went out last night, replaced it... it runs like a top, but will buck and jerk, throws code 44... and mileage drops to a third of normal.
the spitting and sputtering has gone away.

The problem is intermittent.. I did put a fuel gauge on it but it the bucking and jerking stopped... but the fuel psi was steady at 40... but It did act up while I drove it.

WHAT do I do? anyone else had this problem? any ideas?
Reply
Old Sep 23, 2010 | 01:55 PM
  #2  
tehcarguy's Avatar
tehcarguy
Burning Brakes
 
Joined: Aug 2010
Posts: 833
Likes: 1
Default

Whats your fuel pressure? It's most likely the fuel pump. My 86 had the very same problem.
Reply
Old Sep 23, 2010 | 03:02 PM
  #3  
Vetster88's Avatar
Vetster88
Thread Starter
Racer
 
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Default

Originally Posted by tehcarguy
Whats your fuel pressure? It's most likely the fuel pump. My 86 had the very same problem.
40 psi when checked, after I had shut it off . I going to carry the tester along to check it when it acts up.
Reply
Old Sep 23, 2010 | 03:46 PM
  #4  
tehcarguy's Avatar
tehcarguy
Burning Brakes
 
Joined: Aug 2010
Posts: 833
Likes: 1
Default

tape it to the windshield while you drive it and, when it starts having the problems, take note of the pressure.
Reply
Old Sep 23, 2010 | 03:54 PM
  #5  
Cutter1's Avatar
Cutter1
Advanced
10 Year Member
 
Joined: Aug 2007
Posts: 77
Likes: 0
From: St.Pete FL
Default

Check the basics first. Plugs,fuel filter and real important the timing if its not right it will run like crap.
Reply
Old Sep 23, 2010 | 03:57 PM
  #6  
tehcarguy's Avatar
tehcarguy
Burning Brakes
 
Joined: Aug 2010
Posts: 833
Likes: 1
Default

Cap, rotor, coil, and wires as well.
Reply
Old Sep 23, 2010 | 09:06 PM
  #7  
Vetster88's Avatar
Vetster88
Thread Starter
Racer
 
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Default

Originally Posted by tehcarguy
Cap, rotor, coil, and wires as well.
Cap rotor wires have less than 12k on them. I have a new coil for a motor I built will try the in the am
Reply
Old Sep 23, 2010 | 09:09 PM
  #8  
Vetster88's Avatar
Vetster88
Thread Starter
Racer
 
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Default

Originally Posted by Cutter1
Check the basics first. Plugs,fuel filter and real important the timing if its not right it will run like crap.
Has new plugs, will change the filter when I get a chance (convertible). I didn't think about timing... Wonder if the chain is stretching when warmed up?? Will check cold the. Warm.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-1

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-2

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-3

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-4

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-5

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-6

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-7

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-8

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-9

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
Old Sep 23, 2010 | 09:10 PM
  #9  
Vetster88's Avatar
Vetster88
Thread Starter
Racer
 
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Default

Originally Posted by tehcarguy
tape it to the windshield while you drive it and, when it starts having the problems, take note of the pressure.
Looks goofy but will haft do it.
Reply
Old Sep 23, 2010 | 09:28 PM
  #10  
tehcarguy's Avatar
tehcarguy
Burning Brakes
 
Joined: Aug 2010
Posts: 833
Likes: 1
Default

Originally Posted by Vetster88
Looks goofy but will haft do it.
Lol, I did it with mine, and I thought it looked pretty cool...except for the duct tape
Reply

Get notified of new replies

To 88 running like crud





All times are GMT -4. The time now is 01:22 PM.

story-0
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-1
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-2
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-3
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-4
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-5
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-6
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE