Car Running bad - autozone tested and now i'm confused. - 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 07-16-2009, 04:08 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2009
Location: Texas
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
oceanblu_i is on a distinguished road
Default Car Running bad - autozone tested and now i'm confused.

I have a 2002 SLE V6 (not supercharged)
I started her up this morning and the engine is running real rough. Feels like a miss in the engine. Sputters when you accelerate and feels like its going to die when braking or stopping. The service engine soon light was on now its flashing. I had autozone do their diagnostic test and it gave 4 different codes.

(p0404) - says egr system fault - failed egr pressure and position sensor where applicable, failed egr valve.
(p1404) - egr valve stuck open, carbon blockage of the pintle, failed egr
(p0306) - cylinder misfire detected - cylinder 6, ignition system fault-spark plugs, wires, coil, vacuum leak, injector fault, high or low fuel pressure.
(?)- evap purge/vent solenoid circuit condition, purge or vent solenoids defective, fuel saturated vapor canister, failed evap vent solenoid.

DAMN!

I have already replaced my egr a month ago, and 6 months ago I did my plugs and wires. Should I recheck everything? Can anyone please help me figure out what my next step should be????? PPPPPLLLLEEEAAASEEEE
oceanblu_i is offline   Reply With Quote
Old 07-16-2009, 04:15 PM   #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

Sure sounds like a vacuum leak to me. Start checking the hoses and spray carb cleaner around all the vac lines, LIM gaskets, and EGR tubes. Listen for a RPM change.
Danthurs is offline   Reply With Quote
Old 07-16-2009, 05:01 PM   #3
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2009
Location: Texas
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
oceanblu_i is on a distinguished road
Default

P.*. !!!! I also just noticed that its burning rich, the exaust is putting off a strong emissions smell.
oceanblu_i is offline   Reply With Quote
Old 07-17-2009, 12:30 PM   #4
Senior Member
Posts like a Turbo
 
chevyboy572's Avatar
 
Join Date: Jan 2006
Location: Sacramento CA
Posts: 476
Thanks: 0
Thanked 0 Times in 0 Posts
chevyboy572 is on a distinguished road
Default

it may also be a leaky injector...
chevyboy572 is offline   Reply With Quote
Old 07-17-2009, 02:01 PM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

If you read the fsm EGR position is measured within the EGR. If the pintle is stuck open, the car will run and act like a vacuum leak due to the exhaust pouring through the open valve.

http://gearchatter.com/viewtopic8967...6dd364fce25e14

It would be worthwhile for all of us to read how the EGR works in the above link. Great info to know.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Intermittent P0308, tested a bunch of things...is it bad rings, fuel pump or? elwood GMC/Chevrolet Truck/SUV 18 07-12-2014 12:08 AM
Bad, bad, bad, bad vibrations.... SilverSleeper8704 2000-2005 11 07-30-2010 06:42 AM
Ram air done, complete, tested. Lots of pics (not 56k) willwren Performance, Brainstorming & Tuning 59 05-05-2006 05:21 PM
Tested an 05 SLE Today Black_Bonnie89 2000-2005 4 01-16-2005 07:29 PM
Wow tested a 87 mustang 5.0 manual today......... killer_cr80r Lounge 21 09-29-2004 11:07 PM


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 08:59 PM.


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.