whats up i own a 2005 g35 coupe, i bought it at 116k miles then 2 weeks later i got into a accident, now rebuilding. So i have a problem my mass air flow sensor got broken, by that i mean just got smashed up bought a new one a filter now, it was suppose to be for a 350z but made it fit, now i have engine check light and you etc, and now my **** wont go over 2000 rpm but i just added a new mass airflow sensor but didnt work, can anyone help me aslo i ran all the codes and the only one that came up is my mass air flow not being their even tho i put in the new one. now i have the old one in their, so later when i go where i work on my car, should i go put in the new one then do a ecu reset?

 

The MAF is the same, housing is a little different, you don't have to "make anything fit" just take off the two TT screws and replace the thing. You sure the MAF is what's actually the problem and it's not a broken harness or wire? Did you ring everything out back to the ECU harness to make sure it's not shorted or open circuit?

Yes the car will be limp mode without the proper MAF signal.

 

well my friend did but i didnt and nothing shorted also the 350z one was to big so we just cut it. Also we think its the MAF and maybe i just need to reset the ECU with the new MAF sensor because we never reset it

 

also how do i delete threads because i dont know how to lol

 

That's the part I don't understand, the MAF has 2 screws that hold it down to the housing, there's no need to replace the whole plastic housing you just swap out the MAF. The ECU will immediately recognize the MAF and clear the P0102 or P0103 codes, if you STILL have error code then something is wrong, either bad MAF, open circuit, short circuit.

If you're not 100% sure your friend rang the wires back to the ECU then just do it yourself, disconnect the battery, unplug the ECU harness, check for continuity between pins 51, 67, 119 on the ECU and the MAF harness.

 

you got like a social media or something to msg you

 

I never really got into the whole social media thing. It's pretty simple to do, grab a digital multimeter and about 10ft of any type of wire, poke the end of the wire into the MAF harness and run the other end back to the ECU harness. Set the digital multimeter to OHMS and touch the two probes together so you see what reading you get, now put one probe on the wire you ran to the MAF and use the other probe to poke into the harness in slots 57,61,119 and make sure that you have the same continuous circuit reading. Rinse/repeat for the other 2 wires. This verifies that the 3 wires from the harness actually go back to the ECU and none are broken.

Next leave the MAF harness unplugged and read from pin to pin across the ECU, 57-61, 57-119, 61-119, this verifies that the wires aren't shorted out against one another.

Now you have verified you have a continuous circuit for each wire (no open circuit) and that the wires aren't shorted. If you STILL have a MAF error code of P0102 or P0103 once everything is hooked back up then the problem is either in the MAF (probably) or the ECU (less probably).

If you don't feel comfortable performing this troubleshoot then just have the vehicle towed to Nissan or a reputable Nissan repair shop and they can do it.

 

 

we try resetting the computer nothing happen but all the lights went off for a second but when they turned it on the check engine etc came on
so tomorrow we are checking the wires and if we cant figure it out then off to the dealership R.I.P bank account

 

Hey can any one help me i have a 06 g35x. Tht wont go over 2200 rpm i replaced the maf and the throttle body and just put a ecu in it and the dealership reprogram the ecu and still wont go over 2200 rpm and help?????

 

Plug in your OBD2 scanner, anytime it's in limp mode there will be a code.

 

If i test the harness and it dont test the same on all do i need to replace the harness??