SPONSORED LINKS

1999 Pontiac Grand Am EGR Valve Code

Tiny
FERN1961
  • MEMBER
  • 1999 PONTIAC GRAND AM
Engine Performance problem
1999 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 114K miles

The Service Engine Soon light came on and I had it checked. The code came up that I needed a new oxygen sensor. We replaced that on 02.12.10. Drove it for approx. 45 miles and on 02.14.10 the service light came on again. When checked this code showed an EGR valve problem. After doing some reading on your site it seems like the first option would be to check this for carbon build up and try cleaning it before replacing the valve. Any other suggestions for troubleshooting before going to replacement. And what are other related codes that might come up?
SPONSORED LINKS
Monday, February 15th, 2010 AT 2:56 PM

4 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First, there are several codes possible for EGR, please post the Pxxxx number for us to better assist you.
Was this
answer
helpful?
Yes
No
-1
Monday, February 15th, 2010 AT 3:06 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
EGR related DTC's P0400-P0409 not in this bracket its not an EGR problem
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 3:23 PM
Tiny
FERN1961
  • MEMBER
  • 2 POSTS
I didn't get the exact code from the mechanic but I do trust that he knows that it's an ERG problem and that the code does fall in the range of P0400-P0409. They did a little cleaning of the valve, reset the computer and drove the car for about 10 miles or so. I'm going to drive it and see if/when the light comes back on.

I have been noticing that on occasion when starting the car after I had been driving it for a while (running errands kind of starting-stopping driving) that the car wouldn't start right up some times.
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 4:31 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If the EGR valve is cracked open the idle will be erratic or stalling out due to a massive vacuum leak withe EGR valve-Sounds like insufficient flow P0401
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 4:35 PM

Please login or register to post a reply.

Related EGR Valve Test Content

VIEW MORE

Sponsored links