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2002 Toyota Corolla Rough idle

Tiny
DAVE1310
  • MEMBER
  • 2002 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 196,000 MILES
Idle is very rough at start up-after about 30 seconds it smooths out and runs great, I have a code PO302 which I know it is misfire cyl. 2. My question is could a misfire be caused by a faulty/sticky injector, and could this cause a rough idle and then the engine smooths out and runs fine?
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Tuesday, January 6th, 2015 AT 6:27 PM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Yes, that's an unlikely possibility. I would concentrate on the ignition components first.
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Tuesday, January 6th, 2015 AT 6:42 PM
Tiny
DAVE1310
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  • 64 POSTS
Was that reply answer a typo since you said it is unlikely, but initially you said yes to the injector issue.
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Tuesday, January 6th, 2015 AT 6:58 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
No, it wasn't a typo. I said yes, it is a possibility but would not be the first thing I suspected. You have to rule out ignition before suspecting fuel.
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Tuesday, January 6th, 2015 AT 7:05 PM
Tiny
DAVE1310
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  • 64 POSTS
Thanks-I will do that first
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Tuesday, January 6th, 2015 AT 7:10 PM

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