custommaxi92

Hellow everyone I have a 1992 maxima gxe and I have very bad hesitation problem car wont go over 60mph on highway and that's wen I got the pedal to the floor.

I have these new parts
1.fuel injectors
2.mass air flow

I'm new to these nissan vg30e engines nd wuld love to get some help thanks

DennisMik

iTrader: (2)

Is the engine running rough or is it smooth? If the engine runs smooth, I would suspect the MAF.

Roughness could be the fuel injectors. Fuel injectors are a problem on these engines. You can measure the resistance of the fuel injector coil. It should be 12 ohms. The higher the resistance, the less fuel gets into the cylinder and several bad injectors will really hold back the engine.

Another problem could be the spark plug wires, distributor cap and rotor.

custommaxi92

Thanks for replying and engine runs ruff really bad to be more detailed car has no power wen driveing.....exzample wen accelrating it bogs nd stumbles nd takes a gud wile just to get up to speed nd the car doesent make it past 40 mph nd that with the pedal to floor I have replaced fuel inectors spark plugs nd sprak plug wires nd cat

chrome91

iTrader: (1)

tried pulling flashes from the ECU? might be able to get a code

custommaxi92

Another thing is there's is inner butterflys in the intake manifold and there controled by this valve nd I saw tht thers no vacum going to it nd does anyone kno wht the proper name for this valve and wat is does I already kno it crontrols the inner butterflys but do kno wat it does I will include pic of wat I'm talking about

custommaxi92

Nd yes I got 55 wich is normal I think please correct me if I'm wrong nd I have no check engine light on ......... a couple people have told me could be a bad camshaft position sensor or an (eccs) relay but no to sure

jbbons25

iTrader: (2)

That guy is called the power valve actuator for the variable length intake. Most likely due to its age the diaphragm inside is torn and no longer moves when vacuum is applied. But since you mentioned that there's no vacuum, check the hoses for cracks, make sure the one-way valve is installed correctly and see if the green solenoid which is connected the actuator works. Usually if you see a crack on the body of the solenoid, chances are it's no good. (EDIT: I noticed from your photos that you painted the solenoids black. It should be the bottom one of the two)

Also, where did you get the injectors and MAF? Are the injectors rebuilt/remanufactured?

custommaxi92

Ok thank you nd I got the injectors and maf from autozone bosh injectors and oem maf

custommaxi92

Do u think the power acc valve culd cause the hesitation or loss of power

jbbons25

iTrader: (2)

Those two things I highlighted usually don't compute when it comes to parts for our cars. And I wanna bet that will be your problem. What I recommend to do is go to a local junkyard and get an MAF (hoping it's still good, but most of them are) but make sure it's OEM.

jbbons25

iTrader: (2)

If there are vacuum leaks due to bad hose routing or condition, it may cause a small hesitation in regards to that, but it's definitely not the cause of the problem you are having now.

custommaxi92

Ok thanks a lot I will try the maf somtime this week now what about this camshaft position sensor people been telling me about do they seem to go bad on the vg engine a lot or is there anyway of testing it