2005 Toyota Corolla low RPMs causing problems

Tiny
DOGHOUSE
  • MEMBER
  • 2005 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 144,000 MILES
When our 05 corolla is at idle or when we are driving at low speeds, the engine is very sluggish, also we notice that the headlights and tailights will dim when we let our foot off of the accelorator, and will brighten back up when we push on the gas. What kind of electrical problems could we have? Thanks.
Sunday, January 11th, 2009 AT 9:48 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Engine idle speed should be around 900rpm, if below that then it is most likely an IAC (idle air control) valve is dirty/sticking.

If idle speed is OK, then have charging system tested at most autoparts stores for free.
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Monday, January 12th, 2009 AT 9:28 AM

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