04 Maxima SL sluggish slow acceleration and response Help/Ideas! - Maxima Forums



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04 Maxima SL sluggish slow acceleration and response Help/Ideas!

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Old 10-10-2017, 03:25 PM   #1
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04 Maxima SL sluggish slow acceleration and response Help/Ideas!

2004 Maxima SL Auto (5 speed)

for a while now the acceleration and responsiveness have been sluggish along with slower shifting. i didnt realize how bad it was until i drove my friends 05 altima 3.5 which felt insanely fast and shifted way quicker than mine; which has the same motor and trans. it still runs good when you drive normal but as soon as you get on it you can see and feel the rpms slowly rise like its being held back by something. Doesnt matter if its to the floor or not. the car is maintained extremely well, premium gas always and theres no engine light. Ive changed my K matic fluid several times since ive owned it including not even 20k miles ago.

any thought on what it could be? ive searched and read a lot of bad things about the tranny valve body in 04's.

Last edited by boney; 10-10-2017 at 06:06 PM.
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Old 10-11-2017, 09:18 AM   #2
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are you on the original main cat and o2 sensors? what are your fuel trims?
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Old 10-11-2017, 03:18 PM   #3
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I assume it’s the original cat and sensors no idea about the fuel trims.
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Old 10-11-2017, 03:51 PM   #4
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Did you read codes at all? Read codes and fuel trims, if they are on a high side, your o2 sensors are on the way out. Could be a clogged cat too.
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Old 10-11-2017, 04:11 PM   #5
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Did you read codes at all? Read codes and fuel trims, if they are on a high side, your o2 sensors are on the way out. Could be a clogged cat too.
i dont have a light but youre saying to check the conputer anyway?
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Old 10-12-2017, 09:35 AM   #6
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yeah, scan the computer, you'll see if there are any codes and see fuel trims as well. if you are reading more than +10% there is a reason to look at the o2 sensors.
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Old 10-12-2017, 08:58 PM   #7
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theres a p1800 vias code and confirmed its not working. will replace that and see if it helps.
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Old 10-13-2017, 10:08 AM   #8
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There you go! Fix one problem at a time, re-scan and re-visit.
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Old 10-13-2017, 05:32 PM   #9
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There you go! Fix one problem at a time, re-scan and re-visit.
The solenoid on my car doesn’t make the valve move at all. I tried 3 different solenoids from the junkyard each one of them opens the valve as soon as you start the car and never moves back until you turn off the car; No matter how high you rev it. Havent cleared the code yet either. Could all three of these be bad or is my car just acting funny ?
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