nissan maxima 2001 bad torque

[nice_man_36]

hello every one
i have Nissan maxima 2001 full option VQ30 automatic gear im tird too much with this car i feel there is no torque its like 1.8 car and take too much fuel cuaz im always push more acceleration to let car run

i sent my car to maxima garage maybe he has any idea about this problem he try 2 days try change
1- MAF
2- clean throttle body
3 -change TPS
4- chk fuel pump and change 2 regulator
5- 6 coil and plugs
chk all pipe for air leak but its ok all
and car still need push half acceleration to run

i read there is maxima coming 220 hp and 230 hp if my car 220 hp it will be this big defrant ?

i read also this ECU need to program or can change hp chip is this correct ? to increase power ?

my friend have maxima 2000 he can make front tire racing but my car cant race it will normal move

[OwnerCS]

How many miles does you car have on it?

On my 4th generation Maximas and I30s, when the cars get over 100,000 miles, I change the O2 sensors with NTK/NGK OEM spec. So far it gives them more pep and better mileage.

[nice_man_36]

M feel engine sound defrant then other maxima car my car like bad respond take time to respond
I will take pic for my engine soon

[nice_man_36]

my car 242000 km

[OwnerCS]

That is 150371 miles. If you Maxima is still running the original O2 sensors at that mileage, they are over due for a change.

I have purchased 2 used Maximas at that mileage/KM and found the cars still had the original O2 sensors. After changing the O2 sensors the cars had better accelleration and produced better fuel mileage.

[maxhopper]

That is 150371 miles. If you Maxima is still running the original O2 sensors at that mileage, they are over due for a change.

That car does not have O2 sensors. If you look at the picture of the engine bay there are no O2 connectors shown on the front of the engine.

hello every one
i have Nissan maxima 2001 full option VQ30 automatic gear im tird too much with this car i feel there is no torque its like 1.8 car and take too much fuel cuaz im always push more acceleration to let car run

Your engine is slightly different than the ones here in the US.

Are you saying you have to keep your foot on the gas pedal to keep the car running (like when you are stopped)?

[nice_man_36]

Thx for reply u are right my car dont have o2 sensor in front of engine i think back side there is too model some time will come front and i think this in rear side i will chk this
This same us engine only but body defrant its calll some times infinty or i30

the problem this car when stop in signal after move its not too much fast need push half acceleration to run

when car cold and start car its perfect after engine hot then be lazy again

[nice_man_36]

you are correct today i chk with nissan co. they told me ur car dont have o2 sensor
so why car lazy

[nice_man_36]

this video my car Nissan maxima 3.0 2001 gold color vs Nissan maxima 3.0 2000 whit color

i think now problem clear

[youtube]http://www.youtube.com/watch?v=syPuiRQh ... e=youtu.be[/youtube]

this road drive

[youtube]http://www.youtube.com/watch?v=96ONmrqk ... e=youtu.be[/youtube]

[maxhopper]

It could be the idle air control valve is bad. You can try removing it and cleaning it, and see if that helps.

Does your car have a catalytic converter in the exhaust system?

[nice_man_36]

It could be the idle air control valve is bad. You can try removing it and cleaning it, and see if that helps.

this already i remove before and clean all throttle body with control valve its working ok

Does your car have a catalytic converter in the exhaust system?

i dont know about this im was think maybe this need to clean maybe carbon close pipe but if u have any photo for this converter u can advice me

[maxhopper]

Here is a picture of the catalytic converter (I kind of doubt you have one).







Have you checked to see if the fuel injectors are working properly?

[nice_man_36]

u think maybe need to clean or change and if change all or only part

[maxhopper]

If you have a catalytic converter, it can become clogged. You can either replace it with a new one, remove the filtering material inside, or replace it with a piece of straight piping.

As for your fuel injectors, you can try running a cleaner through your fuel system. You can remove the injectors and have them tested, cleaned and have new o-rings installed.

[nice_man_36]

i check all somk pipe there is no any carbon inside and i dont have this catalytic converter

so what can i do for next step

[Miguelone]

I'd start troubleshooting at checking for ECU fault codes, following this I'd also do a compression test to see if you have low compression in one or more cylinders that may be impeding performance. You say it begins feeling sluggish when it gets warm, it may also be coilpacks failing as they get warm. Checking the first 2 though will give the best base to work from.

[mrahlsntd]

this video my car Nissan maxima 3.0 2001 gold color vs Nissan maxima 3.0 2000 whit color

i think now problem clear

[youtube]http://www.youtube.com/watch?v=syPuiRQh ... e=youtu.be[/youtube]

this road drive

[youtube]http://www.youtube.com/watch?v=96ONmrqk ... e=youtu.be[/youtube]

Dear,
I have the A33 series maxima GV, Year 2000.
Are you saying that you can't exceed the 80 Km/h limit ?