96' grand prix - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Pontiac When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Thread Tools Search this Thread
Old 05-10-2011, 10:08 PM   #1
Junior Member
Thread Starter
Join Date: May 2011
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
vortex is on a distinguished road
Default 96' grand prix

i just bought this car and i have a p1406 code so i can't get the car inspected.i replaced the egr valve and ,because of a vacume leak in the brake booster replaced that.i have checked allthe vacume lines and can find no other leaks.i live on social security so i can't afford to take the car to a dealer ,can anybody help me?i'm at my wits end and don't know what to do.
vortex is offline   Reply With Quote
Old 05-10-2011, 10:15 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

Check for the following conditions:
  • Open EGR ignition filter circuit. An open in the EGR ignition filter circuit will cause erratic EGR Position Error readings while the EGR valve is operating. With the ignition ON, a test light should illuminate when connected between ground and the EGR ignition filter circuit at the PCM connector. If not, locate and repair the open in the EGR ignition filter circuit.
  • pink wire pin 68 PCM connector C1(blue)
  • Excessive deposits on EGR valve pintle or seat. Remove the EGR valve and check for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.
  • Poor connection or damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, observe the Actual EGR position display on the scan tool while moving connectors and wiring harnesses related to the EGR valve. A change in the display will indicate the location of the malfunction.
  • EGR Valve Icing. EGR valve icing can occur during cold ambient conditions. An EGR valve icing condition will affect EGR system operation by causing the pintle to stick in the closed position. If DTC P1406 sets, EGR system operation may be inhibited for the remainder of the trip.
Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set
Danthurs is offline   Reply With Quote
Old 05-10-2011, 10:48 PM   #3
Senior Member
True Car Nut
Jonpro03's Avatar
Join Date: Jul 2010
Location: Danville, Illinois
Posts: 2,469
Thanks: 0
Thanked 0 Times in 0 Posts
Jonpro03 is on a distinguished road

Deposits build up over time in the upper intake manifold. Remove the EGR and clean the passage to the UIM.
Jonpro03 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Bonneville, Grand Prix, Grand Am, Monte Carlos...... stb4224 General GM Chat 6 11-20-2005 06:36 PM
The Grand Prix GPX? SSEiDu General GM Chat 8 02-24-2004 11:47 PM
Steering rack/ratio vs. the Grand Prix for quicker steering. brminder 1992-1999 16 03-14-2003 04:23 PM
'00 SSEi vs. '02 Grand Prix GTP SOLID General GM Chat 4 03-11-2003 12:18 AM
93 se vs. early 90's grand prix Delirious0413 General GM Chat 3 12-28-2002 11:59 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 04:30 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.