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2002 Other Saturn Models high rough idle

Tiny
DANIEL_318
  • MEMBER
  • 2002 SATURN
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 98,000 MILES
2002 Saturn SL 2 1.9 L, I am experiencing a high RPM (1800) & a rough idle, getting codes P0301, P0507 I have replaced plugs & plug wires, coils, complete fuel rail w/ 4 injectors Code P0301 is # 1 cyl missfire, code P0507 indicates high idle, Got any ideas?
Dan
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Saturday, February 16th, 2008 AT 4:23 PM

3 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
First you should clean out the throttle body then reset the code and see if it comes back,

did the Missfire code go away?
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Saturday, February 16th, 2008 AT 6:32 PM
Tiny
DANIEL_318
  • MEMBER
  • 2 POSTS
I tried cleaning out the throttle body & got a lit of black slime out of there, however it did not cure the problem. Maybe the injector circuit? PS Thanks so much for responding to the querry so promptly.
Dan
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Sunday, February 17th, 2008 AT 1:48 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Next change your PCV valve and make sure the hose and the rubber boots/elbows are not rotted or cut
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Sunday, February 17th, 2008 AT 2:00 PM

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