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2001 Honda Accord engine rev

Tiny
R1BALLA
  • MEMBER
  • 2001 HONDA ACCORD
Engine Mechanical problem
2001 Honda Accord 6 cyl Front Wheel Drive Automatic 124k miles

very randomly my car will rev to about 2k rpm's all on its own. i took it to a transmission shop cause i needed my trans to be rebuilt and they engine code was P1399 I believe. (which is cylinder misfire). it revs at an idle and while driving. what can cause the cylinder to misfire? i want to take it to the shop but i heard it can be many things and i dont want them digging through my motor and increasing the price as they dig.


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Monday, March 22nd, 2010 AT 9:37 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi R1balla,

Lack of coolant, faulty Idle Air Control valve and vacumn leakages would cause surging.

Misfiring are either due to bad spark plugs, ignition coil and related components, fuel injectors or low fuel pressure. Without any diagnostics, it would not be possible to determine the cause.
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Wednesday, March 24th, 2010 AT 12:12 PM

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