Misfire (p0300, p0301, p0302, p0303 - Lexus IS Forum
User Tag List

 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 10-15-2018, 05:35 PM Thread Starter
Newbie
 
Join Date: Oct 2018
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
 
Misfire (p0300, p0301, p0302, p0303

Hey guys new user here, having that being said I have searched forums for an answer and haven't found anything relating to my issue. Randomly when I start my car it will start to have the trac light flash. Use a diagnostic code and these are the ones I receive. My issue though is I'm not experiencing any problems with the car AT ALL. Vehicle is not sluggish, not rough, not misfiring, not hard to start ... nothing. The issue it's making me paranoid as hell. These are the most my vehicle has.

Aem short ram cai
Green headers
Hks exhaust
Fortune auto 500's
Full sound system
Iza2jz is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 10-15-2018, 06:34 PM
Enthusiast
 
Join Date: Dec 2010
Location: Marietta
Posts: 1,458
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 339 Post(s)
           
Quote:
Originally Posted by Iza2jz View Post
Hey guys new user here, having that being said I have searched forums for an answer and haven't found anything relating to my issue. Randomly when I start my car it will start to have the trac light flash. Use a diagnostic code and these are the ones I receive. My issue though is I'm not experiencing any problems with the car AT ALL. Vehicle is not sluggish, not rough, not misfiring, not hard to start ... nothing. The issue it's making me paranoid as hell. These are the most my vehicle has.

Aem short ram cai
Green headers
Hks exhaust
Fortune auto 500's
Full sound system
Check MAF,ignitor. Then swap plugs wires and boots. If you find oil around the plugs replace the valve cover gaskets also. Coils usually do not go bad.
01 SolarYellow is offline  
post #3 of 4 (permalink) Old 10-15-2018, 06:45 PM Thread Starter
Newbie
 
Join Date: Oct 2018
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
 
If this narrows it down more it typically happens after a heavy rain or whenever there's a lot of humidity in the air
Iza2jz is offline  
 
post #4 of 4 (permalink) Old 10-15-2018, 07:57 PM
Enthusiast
 
Join Date: Dec 2010
Location: Marietta
Posts: 1,458
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 339 Post(s)
           
Quote:
Originally Posted by Iza2jz View Post
If this narrows it down more it typically happens after a heavy rain or whenever there's a lot of humidity in the air
Not really. Check all the connections. Coils,ignitor,and Maf.
01 SolarYellow is offline  
Sponsored Links
Advertisement
 
Reply

  Lexus IS Forum > Lexus IS > Basic Help & Repair

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Lexus IS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. If your address is invalid, you will likely lose access to the site.

Email Address:
OR

Log-in











Current users viewing this Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rumbling in Engine Alac20 General Discussion 6 01-22-2018 10:36 AM
Multiple misfire issue rdawg1985 General Discussion 7 06-06-2017 08:31 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome