can anybody help me out I do not have a check engine light on my 2002 Maxima and when I accelerate the gas pedal it has a delay what could it be

 

maf

 

Wats maf?

 

Mass Air Flow sensor. It lives in the intake tube between the air filter box and the throttle body. It measures the volume of air entering the engine so the computer knows how much fuel to give it to keep the proper AFR (air/fuel ratio)

If the MAF is dirty or failing it can cause all sorts of problems. It doesn't always throw a code either.
Here's a thread describing how to clean it. It's a cheap and easy thing to try first.
https://maxima.org/forums/5th-genera...10-w-pics.html

Is this car new to you?

 

No my second 5th gen within 2 years just never had This problem

 

How long of a delay is it?
Has it done it since you've owned the car?

I'd go ahead with the MAF cleaning. A dirty MAF will be slow to respond to changes in the air flow and could delay the increase in fuel delivery as air flow increases.

 

Cleaned the maf a stronger delay wen I accelerate..... was at a red light and couldn’t move until it turned green the second time

 

I was told to leave the battery unplugged over night

 

That won't do anything.

Go to the junkyard and steal every 00-03 maf.

 

Yeah, probably time for a new MAF. Junkyard is good if you get lucky or get the Hitachi brand from rockauto.com

You do need a MAF from a 02/03 though. The 00/01 MAF is different.

Disconnecting the battery wont do anything on the 02/03 cars. It will erase some memory and CELs on the 00/01 cars if you leave it disconnected long enough. That's where the idea comes from.

 

I would hope he can figure out how to swap the thermistor lol

 

You said your check engine light is on. Generally any auto parts store will check the light for you at no cost. So I'd start there!

 

Now I have a new maf sensor and the idle is low.....should I do the idle relearn procedure and if so what is it for a 2002 maxima

 

you have to make sure the cars coolant is between a specified temp.
You may need a scan tool!
If the coolant is too hot the idle may be normally higher then the target idle speed.
So if its too cool it may be higher too.

 

low idle will probably fix it self. mine did the first day after a new maf.