P0304 Code

Reply

  #1  
Old 09-26-11, 07:53 AM
G
Member
Thread Starter
Join Date: Sep 2011
Location: USA
Posts: 4
Received 0 Votes on 0 Posts
P0304 Code

I have a 97 Nissan XE and for the last several years, I keep getting the same code on my dash. I have tried the following, but no help:

I have replaced the Plugs, Wires, Dist. Cap, Rotor, O2 Sensor, EGR Valve, Vacuum Lines. I have had the Cat Converter inspected. I have exchanged the #1 fuel injector with the #4 injector. Still get the darn code. Is there anything else I can try?
 
  #2  
Old 09-26-11, 09:17 AM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,154
Received 62 Votes on 54 Posts
Hi from my knowledge of autos this code would dictate the knock sensor, but not common.

Also have you checked for leaks on the intakemanifold? This is very common issue that throws this p0304 code. Gaskets often leak I believe on these autos around the #4 cylinder.

I also may suspect the mass airflow sensor (MAF)

And last but not least, the computer may be bad.

Mike NJ
 
  #3  
Old 10-15-11, 06:47 AM
S
Member
Join Date: Feb 2007
Location: Upstate SC
Posts: 26
Received 0 Votes on 0 Posts
P0304 is misfire on cyl #4. Sounds like you need to go ahead and do a compression test.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: