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Rough Idle

Tiny
CHRISCALHOUN
  • MEMBER
  • 1995 SATURN SL2
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 235,000 MILES
Hello guys, I have a 1995 saturn sl2, DOHC, and it has 235,000 miles. Recently had a very rough issue with idling a few months ago. I bought a code scanner and found out the code issue indicated a MAP sensor issue was causing the problem so I replaced it and it ran great. It is now idiling really rough again and it is showing code 32 which is the BARO sensor failure but whenever I look up this issue online it goes back to the MAP sensor, or can possibly be the EGR valve. Which one of these issues does it sound like it could be this time and how hard is it for an individual to change out an EGR valve. The idle is so rough I need to hold the gas down even when I need to apply the brake to keep the idle up to stop it from stalling. Thanks for any help.
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Tuesday, February 1st, 2011 AT 1:41 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try cleaning out both the idle air control valve and EGR also the throttle position sensor-
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Tuesday, February 1st, 2011 AT 5:31 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
To add to this answer code 32 is your egr and judging from your symptom's I would say the egr is sticking open and causing a vacuum leak. The egr is really easy to change take it off and see if it's stuck open when you have the rough running.
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Tuesday, February 1st, 2011 AT 6:32 PM

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