Cant figure out whats wrong , tricky problem !!

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Apr 29, 2018 | 11:51 AM

dylannn3

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Cant figure out whats wrong , tricky problem !!

I have a 2000 nissan maxima it accelrates really poorly from 40-100 its sluggish and it sounds really horrible like its surging thats the best way i can explain it , i do have a CEL for a massive evap leak idk if that could be the problem , the car sounds horrible when accerlating and i really need help pin pointing the possible soolutions to this problem

Apr 29, 2018 | 02:16 PM

Theslaking

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Posts: 339

From: Buffalo

The evap solenoid/vent valve could be stuck open or broken.

Apr 29, 2018 | 03:21 PM

MadMax SE

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Quote:

Originally Posted by dylannn3

what do you mean by it sounds horrible? Ticking, Exaust noise, marbles in a can noise, knocking?

Apr 29, 2018 | 03:38 PM

dylannn3

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Quote:

Originally Posted by MadMax SE

what do you mean by it sounds horrible? Ticking, Exaust noise, marbles in a can noise, knocking?

the noise is coming from the engine , when you accelerate it’s sounds like it’s clogged up or struggling to pick up speed but it’s not struggling to pick up speed it just sounds horrible

Apr 29, 2018 | 06:30 PM

Child_uv_KoRn

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Quote:

Originally Posted by dylannn3

the noise is coming from the engine , when you accelerate it’s sounds like it’s clogged up or struggling to pick up speed but it’s not struggling to pick up speed it just sounds horrible

Check codes to make sure knock sensor isn't on there.

Replace Y pipe with aftermarket (no cats). If it's high miles (and I'm sure it wasn't maintained), then precats are probably clogged. Gut the rear cat, too.

If it seems fine at low rpms, then hits a wall at high rpm, then that's pretty much a guarantee. I don't think maf would cause what you're describing, since you said it sounds bad.