Acceleration Problem with '98 Maxima

Hey Guys!
Thanks for helping me with my remote problem.
I have a 98 maxima SE with automatic transmission. When I press on a gas above 30mph it does not respond right away and most of the time nothing happens until I press the pedal really hard. Its like there is a gap. I recently chaged air filter, oil, oil filter, spark plugs and gas filter. I have no idea what could possibly cause this. Please help
Thank you

Might want to check your ECU for ghost codes such as 0304 which is the knock sensor needing replacement.

~THT

Thank you for your response. I would appriciate if you can explain a little more how exactly i should do it. I know where the ECU is and thats about it.
Thank you

Hi I had similiar problems about a month ago I replaced my knock sensor and ECT sensor and all is well.... Maybe these links will be of help to you, Good luck....
http://www.vbxmaxima.8m.com/ecu.html
http://www.vbxmaxima.8m.com/ecudecoder.html
http://www.motorvate.ca/mvp.php/507

Thank you
I will check the knock sensor.

I just realized that the ecu decoder page is messed up... I did e-mail asking when it will be available and I am waiting on a response as soon as I find out some info I will gladly post...

I have the Haynes manual; post your codes and I'll interpret them

~THT

I got it, its 0304 - knock sensor. I guess I will have to change it. Should I go to nissan center to run the tests or you suggest i should just buy the sensor and install it?

Just replace it. Get the part from www.jerryromenissan.com and use the promo code "MAXIMA"; should come out to $110-$120 shipped. Then, use the following tutorials to change it:

http://www.skippynet.com/maxima/knocksensor.htm
http://www.motorvate.ca/mvp.php/507

~THT

Thank you very much for your help guys. I will do as you recommended.

don't replace the knock sensor its not your problem and won't be your problem it doesn't do anything you can have that code from new dealers don't even fix it you got other issues before wasting your money

don't replace the knock sensor its not your problem and won't be your problem it doesn't do anything you can have that code from new dealers don't even fix it you got other issues before wasting your money


What other issues? Please explain...

there is a tsb ntb98-111a it calls for an ecm to be replaced if u give it gas and it hesitates then kicks in replace ecm to resolve it

I have always wanted to know what are the sensors which unless they are dead completely you will not see a code in ECu.

I mean you could have one/some sensors with out of range readings however ECu is showing normal operation code.


I know throttle position sensor is one of them.

Does anybody know more.

well tps will set a code and affect your trans performance u might not see a code for it but u will see like at 1st function code that is tps related but knock sensor barely does anything.

Ok, well what exactly should I do, whch tests to run to know what is wrong with my car?
Thanks

first look at your ecm its under the dash in the center on the floor see if you see water marks on it.
the bulletin i was talking about is a nissan bulletin so its about 90% the problem

also check the voltage on the tps it should read between 0.42 - 0.48 volts you have to back probe the wires or just stop at the closest dealer a half hours labor should be all to tell you for sure 0

don't replace the knock sensor its not your problem and won't be your problem it doesn't do anything you can have that code from new dealers don't even fix it you got other issues before wasting your money

Yes...the KS does nothing... :rolleyes: (http://forums.maxima.org/showpost.php?p=2192533&postcount=42)

i've been to nissan schools and they say them selfs that the knock sensor helps alittle on the a/f ratio but your ecm has a set value inside of it so if the knock sensor were to malfunction that it isn't that important but this guys [rpoblem he can do what he wants its a free country but it is not his problem nissan has a tech bulletin that says for this problem he needs an ecm and if you can see the bulletins the number is ntb98-111a

Thank you all,
Since I already bought the knock sensor I will install it and if the problem persists I will think about changing my ecm.
Thank you again

I changed the knock sensor and it is a completely different car. Responses to gas pedal very well. Thank you