Random cylinder misfire

NATALIANEAL84

MEMBER
1998 TOYOTA AVALON
6 CYL
2WD
AUTOMATIC
230,000 MILES

I am getting codes for cylinder 2, 5 and random cylinder misfires. I changed all spark plugs, replaced the PCV valve just for good measure, and changed the wire set. First, I want to make sure that I replaced the wires in the correct order. It is my understanding that the back cylinders are 1, 3, 5 from left to right if viewed from the front of the vehicle and the front cylinders are 2, 4, 6 again, from left to right. I saw an old posting for a 96 that said the wire pairing should be 1&4, 2&5, and 3&6. If this pairing is correct for the 98 as well? Also, if the problem is unchanged, would the next logical step be to change the ignition coil for those cylinders?

Friday, October 23rd, 2009 AT 6:42 PM

3 Replies

MATHIASO

MECHANIC
1,209 POSTS

You right for the firing order .
1-2-3-4-5-6-Distributorless 1MZ-FE engines

I'm sending the firing order in your email, so you can see it bigger than this.

if the wire have been replaced in the correct order and it is the random misfire you got before you changed the spark plugs and wires the the ignition coil could be suspected.

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Saturday, October 24th, 2009 AT 3:56 PM

DJI'AUTO SERVICE

MEMBER
1 POST

Oui, c'est exact, j'ai eu le m� me probl� me.

Translation: Yes, that's correct, I had the same problem.

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Saturday, July 4th, 2020 AT 4:54 PM

KASEKENNY

MECHANIC
18,907 POSTS

From what I can get translated, it looks like you are confirm what was stated earlier. If so, thanks for jumping in and adding to the post.

If there is anything we can help you will, just let us know. Thanks

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Saturday, July 4th, 2020 AT 5:55 PM