2002 Dodge Intrepid

KERRIN777

MEMBER
2002 DODGE INTREPID
6 CYL
2WD
AUTOMATIC
12,300 MILES

Intrepid 2.7L - check engine light came on - took to autoparts store - diagnostics say misfire in cylinder one and o2 sensor 1 was bad. Replaced all spark plugs and cylinder 1 boot (passenger side) and both front o2 sensors.(Wasn't sure which was bank 1 so replaced both). Light still on now - diagnostics now say multiple misfires. Car interior lights flicker while driving and while idling - idles at low RPM but timing is not off (according to diagnostics). Has a rough idle when in drive as well.

Wednesday, January 14th, 2009 AT 1:20 PM

3 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Hello
Thanks for the donation.

For DTC P0300 -- Multiple Cylinder Misfire , perform the following tests.

If you need further assistance, just let me know.

Hope this helps..
Thanks for using 2CarPros.com!

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Thursday, January 15th, 2009 AT 1:09 AM

KERRIN777

MEMBER
2 POSTS

Sorry, guess I should have informed you that I don't have the testing machine - I am using the information the guys at autozone told me. I was trying to see if it was something simple that could be fixed without going to the mechanic. Most of your answer was unfamiliar to me. Is there a way you can simplifly it. I may not have realized that this is a forum for "mechanically inclined" people.

Also - when I registered, after the donation - your website had a button that said "ask your querstion" - "question" is misspelled. Just fyi :)

Thanks!

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Thursday, January 15th, 2009 AT 7:59 AM

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Okay, no problem. This site is for everyone which is why I stated you can just let me know if you need more assistance. Obviously we do not know the skill level of every poster so I go by what the poster has stated and how it was worded.

Anyways, so basically a mutiple misfire can be multiple things. It can be a vacuum leak in the engine compartment, timing could be off a little, all clyinders may not have proper compression, faulty/clogged fuel injectors, faulty wiring . And the list does go on as shown in previous post. If you do not have any tools such as a fuel pressure gauge or compression gauge then you can't really perform the proper diagnostic procedures for a multiple misfire engine. You can visually inspect the vacuum hoses and other components such as timing belt/chain to ensure that they are good.

Hope this helps. And thanks for the FYI
Thanks for using 2CarPros. Com!

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Thursday, January 15th, 2009 AT 12:43 PM