C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Need Input: P0300 Code FLASHING!!

Old May 22, 2005 | 02:28 PM
  #1  
QuikZilver's Avatar
QuikZilver
Thread Starter
Le Mans Master
10 Year Member
 
Joined: May 2003
Posts: 5,362
Likes: 3
From: Delray Beach FL
Default Need Input: P0300 Code FLASHING!!

Today, my 01 Z06 started running rough and then the Check Engine light started flashing. Limped my Vette home and plugged in my Diablo to pull the codes. I am only getting the P0300: Mulitple Misfire code. I did a search here and found a number of people recommending replacing the plugs and wires. Just happens that I have a set of wires that I haven't put on and picked up a set of plugs on my way back to my house. I am going to try installing these to see if that will solve it. My Vette has just over 30,000 miles on it. Anyone else have this problem? What did you need to do to fix it? I figure if the wires and plugs don't fix it, then I am taking it to the dealer first thing in the morning (have GMPP on my Vette). Any input would be great!! Thanks in advance!!!
Reply
Old May 22, 2005 | 05:07 PM
  #2  
QuikZilver's Avatar
QuikZilver
Thread Starter
Le Mans Master
10 Year Member
 
Joined: May 2003
Posts: 5,362
Likes: 3
From: Delray Beach FL
Default


Problem solved!!!

2 factory wires fell apart when I took them off. Glad I had a set sitting in the garage. Also found "Denso" plugs were installed in my Vette. Yanked them out (#8 looks like it was the culprit, it was damp) and put in Delco plugs. I have no idea why there were Densos in there. My Vette just turned 30,000 miles. I bought the car last July with 13,900 miles. Wires were factory and was surprised that two of them came apart when I was taking them off the plugs.
At least the problem is fixed!! Last thing I needed was for this to happen on my trip to Walt Disney at the end of this week!!
Reply
Old May 23, 2005 | 01:46 AM
  #3  
WALLstAL's Avatar
WALLstAL
Race Director
15 Year Member
 
Joined: Aug 1999
Posts: 15,466
Likes: 0
From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Default

Reply
Old May 23, 2005 | 08:24 AM
  #4  
ben dover's Avatar
ben dover
Team Owner
20 Year Member
St. Jude 20 Year Donor
Active Streak: 120 Days
Liked
 
Joined: Dec 2003
Posts: 21,840
Likes: 140
From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas
St. Jude Donor '05 thru '26
Default

Relief - huh?
Reply
Old May 23, 2005 | 09:02 AM
  #5  
QuikZilver's Avatar
QuikZilver
Thread Starter
Le Mans Master
10 Year Member
 
Joined: May 2003
Posts: 5,362
Likes: 3
From: Delray Beach FL
Default

Major relief!
I thought I might have a huge problem looking at the service manual. Then I did a search here on the forum. Couple people had the same problem and replaced wires and plugs. Well, since I had them in the garage, I spent 2 hours and replaced them. Man I love this place!!! Kept me from going to the dealer!!
Reply

Get notified of new replies

To Need Input: P0300 Code FLASHING!!



Thread Tools
Search this Thread

All times are GMT -4. The time now is 04:09 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE