Maxima misfire??! - Engine ODB2 Fault Codes


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Maxima misfire??!

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Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes

lark265
New User

Aug 24, 2014, 9:06 PM

Post #1 of 3 (2236 views)

Maxima misfire??!	Sign In

I have a 1998 Maxima with 57K miles on it. I just bought it about a month ago. Anyway, a week ago I noticed It felt very "choppy" when I shifted into Drive or Reverse. It felt like it was going to stall but it never did. The Service Engine Soon light has been on for about 3 weeks but now, when I go up hills especially, that light blinks. I can still drive it but I shift into Neutral at stoplights to avoid hearing the rough idle while in Drive. Went to Pep Boys yesterday - they had the car for about an hour and then informed me that they would need to keep the car for a full day because of the "complex issues involved" - especially concerning the codes. The codes they read were:

p0300 random misfire
p0325 knock sensor
p0440 evap emission

My car passed smog test abut 3 months ago. I can drive it OK it just is very choppy and so there's not a lot of power, especially going up hills.

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 24, 2014, 9:36 PM

Post #2 of 3 (2231 views)

Re: Maxima misfire??!	Sign In

If you keep driving it with misfires like that, you'll end up melting the catalytic converters, if you haven't already. That gets really expensive.

You need to figure out which cylinder(s) are missing and what is causing those cylinder(s) to misfire. If you don't have any diagnostic equipment, I suggest you take it in to your mechanic or a repair shop that does drive-ability.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

kev2
Veteran
kev2 profile image

Aug 25, 2014, 8:40 AM

Post #3 of 3 (2208 views)

Re: Maxima misfire??!	Sign In

I would start with the p0440 - this is a somewhat generic EVAP code and most likely has other codes - BE aware those other codes may require a professional scanner to access as they are NOT the generic free scan type of codes.

Without a scanner Only suggestion is Look for a vacuum leak, AS that would cause a KS issue and a misfire- IS the engine ticking, knocking, making any noise?

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