SES codes jumping - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-28-2010, 10:20 AM   #1
XEN
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2004
Location: NEW YORK
Posts: 77
Thanks: 0
Thanked 1 Time in 1 Post
XEN is on a distinguished road
Default SES codes jumping

Hello all, 2000 Bonneville been running rough at high acceleration blinking SES. When code pulled it was P0306 misfire cylinder 6. Before working on it I pulled the code and now jump to P0300 random misfire. So I went ahead and changed the coils and ICM and took the car for a run at high speed and it did the same thing code was still P0300 random misfire, Yesterday I put new Spark plugs and took it for a run and again it misfired but now it read P0305 misfire cylinder 5… I was reading several forums here and they mentioned checking the fuel injectors however, what can be the cause of my SES codes jumping from P0306 to P0300 then now to P0305.Can there be something in my fuel rail jumping around?

Last edited by XEN; 03-28-2010 at 11:25 AM.
XEN is offline   Reply With Quote
Old 03-28-2010, 10:33 AM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

how old are your plug wires? 306 is cylinder 6, 305 is cylinder 5, 300 is random misfire.
Danthurs is offline   Reply With Quote
Old 03-28-2010, 10:53 AM   #3
Senior Member
Posts like a Corvette
 
crunkfrunk's Avatar
 
Join Date: Jun 2008
Location: Cleveland, OH
Posts: 1,389
Thanks: 0
Thanked 0 Times in 0 Posts
crunkfrunk is on a distinguished road
Default

If your wires aren't too old I would check them all again to make sure they are tight
crunkfrunk is offline   Reply With Quote
Old 03-28-2010, 11:00 AM   #4
XEN
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2004
Location: NEW YORK
Posts: 77
Thanks: 0
Thanked 1 Time in 1 Post
XEN is on a distinguished road
Default

Hey Danthurs, the wires are about 9 months old i did take a look at all of them when installing the plugs and they were in good shape.
XEN is offline   Reply With Quote
Old 03-28-2010, 11:10 AM   #5
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

What kind of plugs do you have? Check the tip. I've seen a few with screw on tips that get loose. This will cause a misfire.
Danthurs is offline   Reply With Quote
Old 03-28-2010, 11:21 AM   #6
XEN
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2004
Location: NEW YORK
Posts: 77
Thanks: 0
Thanked 1 Time in 1 Post
XEN is on a distinguished road
Default

I put AC Delco platium spark plugs 41101 no screw tips..The ngk that were in there had the the screw tips. I did check to see if all my wires were tight after pulling the codes every wire was intact tight. I was thinking of messing with the fuel injectors but should i look at something else first since the codes are changing on me.

Last edited by XEN; 03-28-2010 at 11:24 AM.
XEN is offline   Reply With Quote
Old 03-28-2010, 11:30 AM   #7
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Pull those plugs and look at them. those are the wrong plugs for a supercharged engine. Get autolite copper. No platium plugs. They melt and cause misfires.
Danthurs is offline   Reply With Quote
Old 03-28-2010, 11:42 AM   #8
XEN
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2004
Location: NEW YORK
Posts: 77
Thanks: 0
Thanked 1 Time in 1 Post
XEN is on a distinguished road
Default

Really..I picked these from rockauto parts catalog the supercharged option..Do you know the part number on the autolite?
XEN is offline   Reply With Quote
Old 03-28-2010, 12:05 PM   #9
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

I believe you need the 605
Danthurs is offline   Reply With Quote
Old 03-28-2010, 12:21 PM   #10
XEN
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2004
Location: NEW YORK
Posts: 77
Thanks: 0
Thanked 1 Time in 1 Post
XEN is on a distinguished road
Default

Do platnium plugs melt rite away since they are new or does it happen with time ? I guess i'll try changing the plugs first to see what happens.
Thanks i'll keep u posted.
XEN is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
SES Codes Paco.McGraw 1992-1999 1 07-02-2006 12:52 AM
Codes from SES light in my '94? TDS-94SSEi 1992-1999 12 04-03-2006 09:32 AM
SES light on but no codes stored! Help. suctoes 1992-1999 11 11-27-2005 03:32 PM
SES codes 43, 34, 66, 67 Custom88 General GM Chat 5 05-06-2003 12:50 AM
Jumping pins for codes..quick question here!! 95neongirl 1992-1999 3 04-23-2003 12:10 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:51 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.