I need help getting this car to run

 

Year? Mileage? Recent work? Running history?

 

 

2000 with 130k , I've changed fuel pressure regulator, MAF , throttle body

 

Is it even sparking?

 

the Sparks get wet immediately

 

Injectors...?

 

Do you mean the spark plugs? If so, you could have some bad fuel injectors or the o-rings that seal them.

 

one injector seems to have a lot of pressure

 

All injectors have the same pressure supplied to them. Comes from the fuel pump and the fuel pressure regulators.

If one injector seems to be "injecting" too much gas, then it is the injector or the o-rings.

However, just one or two, maybe 3 bad injectors won't stop the engine from starting. There may be other problems also.

 

True it should turn . Fyi we also replaced the air intake gasket , fuel pressure regulator, throttle body, MAF and i don't know if this could also affect it but the previous owner put in a 03 ECU

 

im surprised this ever worked. did previous owner swap in a vq35? i'd think the cars are too different otherwise

 

No it has original 3.5 engine

 

It's original ECU won't run the fuel pump

 

2000 maximas didn't have 3.5 engines

 

Oh It doesn't? I checked to make sure , it says v6 3000

 

So it's 3.0?

 

 

The crankshaft sensor and the camshaft sensor systems are different between the 3.0 and 3.5 engines so the ECU isn't getting the signals it wants.

But the original ECU not running the fuel pump is very unusual, although possible. Did you get the original ECU?

Why was all the other work done? Was this done trying to get the car to start befor aor after the ECU swap?

 

The previous owner swapped the ECU that was from an 03. All the work was done with the 03 ECU. We changed the throttle positioning sensor and MAF because it was giving us erratic rpm

 

It sounds like the car may have a bad IACV (Intake Air Control Valve) and this has a tendency to short out integrated circuits in the ECU.

But you have to get a 2000 ECU for you car - PERIOD. No ifs ands or buts.

And before you hook up the 2000 ECU test out the IACV as outlined in the service manual on pages 502 and 506 in the link below.

http://boredmder.com/FSMs/Nissan/Maxima/2000.5/EC.pdf

 

You can't run an 03 ECU on your 00 Max and expect everything to run right. Get the proper 00 ECU. This should be the very first thing you do.

 

I'll try to find one that's compatible

I just got it to run but then it stopped, checked the spark plugs and the tips were wet and kinda looks like oil

 

I don't know how the spark plugs could have oil on them without the engine having serious mechanical damage.

The next time you take the plug out, smell it. Does it smell like gas or oil?

 

It smells like gas but the tip is covered black

 

Which mean it's running really rich, because of the wrong ECU.

Install proper ECU
Install new plugs

Then we'll take it from there.

 

At the risk of repeating my self...

 

We are going to get a new ECU


I know this is off topic but does anyone know why the dashboard lights stay on for a few seconds after taking the key out

 

I think they stay on until you open the door.

 

My lights go off when I turn the engine off. The key can still be in the ignition switch.

This may be another symptom of the wrong ECU. The body control module, SECU, is different in the 2000 & 2001 than what is in the 2002 & 2003.

 

Yea true....sorry i have the fog light mod so i ride with the quarters and fogs on all the time....

 

I read that it could be a relay ?

 

Wait until you get the correct ECU in the car and see what happens. Having 2 mis-matched computers (the ECU and the SECU) trying to communicate with each other can cause unpredictable things.

 

I'm confused ! A 2000 with a VQ35? And it''s the origina motor? Not possible!

 

Yeah, we already established that.




OP, you really need to follow our simple advise rather than making things more complicated