Go Back   Cadillac Forum - Enthusiast forums for Cadillac Owners > General Technical Section > General Tech
Sign in using an external account
Register Forgot Password?
Search

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-20-2007, 10:52 AM
 
Join Date: Sep 2007
Location:
Posts: 13
Default ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Well last night I was sitting at a drive thru ata fast food joint. All of a sudden my 2004 Cadi CTS V6, starts to Shake, and seem to feel like it was missfireing or something. Next thing I know about 15 seconds later my check engine light begins to flash. Funny thing is after the engine light flashed it stayed on, and seem not to Idle off as bad.... I got home checked a few things out, and disconnected my ground to reset engine light.. The light reset on start up, but begin to shake bad again, then again engine light flached, and then stayed on and idle better???? Anyone have any Idea,or ever experienced this before???? Thank You
...Medieval_Cadi...
Reply With Quote
  #2  
Old 09-20-2007, 01:57 PM
Katzmans Caddy's Avatar
Super Moderator
 
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,452
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

It would be nice to have a code, but you are describing symptoms that often point to coil packs and spark plugs going bad.
__________________
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5
Reply With Quote
  #3  
Old 09-20-2007, 11:21 PM
 
Join Date: Sep 2007
Location:
Posts: 13
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Well I took it in today, and came up with these numbers....P0205-Injector Curcuit Open Cylinder 5....P0300-Multiple Cylinder Misfire Dtected....P0305-Cylinder 5 Misfire Detected.......................I was told that big chance is that Fuel Injector #5 is bad, and should be replaced... Anyone else have any suggestions, or does that seem right? ...Medieval_Cadi...
Reply With Quote
  #4  
Old 09-20-2007, 11:44 PM
Katzmans Caddy's Avatar
Super Moderator
 
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,452
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

That's sure what the codes are pointing to. Sounds like you did notget the car repaired. I feel a misfire is related to sparks too, so check out #5 plug too. At least it will not be too costly to repair.
__________________
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5
Reply With Quote
  #5  
Old 09-21-2007, 12:21 AM
 
Join Date: Sep 2007
Location:
Posts: 13
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

I did purchase, and have already installed all new Spark Plugs, and pulled the #5 fuel injector out.. Tomorrow I should be able to pick up the injector, and I will install it right after work, and see how that goes. ...Medieval_Cadi...

P.S. "Man Cadillac sure made it tough to get those spark plugs out"
Reply With Quote
  #6  
Old 09-21-2007, 08:19 AM
Katzmans Caddy's Avatar
Super Moderator
 
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,452
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Good luck, let us know how it works out.
__________________
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5
Reply With Quote
  #7  
Old 10-02-2007, 08:31 PM
 
Join Date: Oct 2007
Location:
Posts: 14
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

did you ever figure out what was going on with your caddy? my baby is spending the night at the mechanic's for a very similar problem.
mine was a continuous shaking and was not very noticable. i am predicting a simple plug needs to be replaced.
some advice would be helpful just incase the mechanic tries to pull the wool over my eyes.
Reply With Quote
  #8  
Old 10-04-2007, 10:48 AM
 
Join Date: Sep 2007
Location:
Posts: 13
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Well. I installed the new fuel injector along with new spark plugs... But still the car is idleing rough???? I pulled out #5 spark plug, and noticed I have gas on the plug!! seems like its not fireing the way it should... Does anyone have an answer for me?? What sould I do next??
...Medieval_Cadi...
Reply With Quote
  #9  
Old 10-04-2007, 01:34 PM
Katzmans Caddy's Avatar
Super Moderator
 
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,452
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Coil.
__________________
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5
Reply With Quote
  #10  
Old 10-04-2007, 10:10 PM
Tech Certified Members
 
Join Date: Jul 2006
Posts: 423
Default RE: ROUGH IDLE & CHECK ENGINE LIGHT ON!!

Try a different plug wire on the number five and see if you get any change!!
Reply With Quote
Old 10-04-2007, 10:10 PM
 
 
 
Reply



Tags
1999, 350, cadillac, check, cts, engine, fuel, gmc, idle, injection, light, shakes, shaking, suburban, symptoms, vortec


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 On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -5. The time now is 07:52 AM.

Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.