how to test mafs

[jin3001]

I HAVE A 97 240 WITH A SR20 W/ V V T I HAVE 2MAFS BOTH FOR THIS MOTOR,THE ECU IS CODE NA WIRING WAS DONE BY YURI AT WIRIRNG SPECIALTIES.THE PROBLEM IM HAVINGB IS THE CAR IDELS FINE BUT WILL NOT REV PAST 2000 RPM ,IT DOENS SPUTTER OR BUCK ,I CAN FLOOR THE PEDAL BUT NO RESPONSE PAST 2000.THIS ENGNE HAS NEVER SEEN THE ROAD SINCE I GOT IT.IT WAS ORIGINALLY INSTALLED BY A SHOP HERE IN SAN ANTONIO.I PULLED IT FROM THEM AFTER IT TOOK A YEAR FOR THEM TO GET THIS FAR.THEY OBVIOSLY DID NOT KNOW WHAT THEY WERE DOING BUT NOW IM STUCK WITH THIS PROBLEM AND I DONT KNOW WHERE TO GO FROM HERE.CAN I TAKE THIS TO A SHOP THAT HAS A CONSULT AND HAVE THEM DIAGNOSE IT OR WILL THEY NOT WORK ON IT BECAUSE THE CAR DID NOT COME WITH THIS MOTOR.CAN ANYONE RECOMMEND A SHOP IN SAN ANTONIO THAT CAN DO THIS KIND OF WORK.I WORK LONG HOURS AND CANT EASILY WORK ON THE CAR.PLEASE CAN SOMEONE HELP ME.YES I AM BEGGING.ANDREW PERRY [email protected]

[180fan]

nothing past 2k, it's your mafs. why exactly you've got two mafs setup on your car is questionable unless you've a twin turbo setup which is rather rare for the SR.

[jin3001]

i purchased two mafs to have an extra one,not two on the engine

[S0lid_Snake]

my eyes, they are bleeding... was the wiring finished?

[Raxephon]

Edited for your viewing pleasure.

I HAVE A 97 240 WITH A SR20 W/ V V T I HAVE 2MAFS BOTH FOR THIS MOTOR,THE ECU IS CODE NA WIRING WAS DONE BY YURI AT WIRIRNG SPECIALTIES.

THE PROBLEM IM HAVINGB IS THE CAR IDELS FINE BUT WILL NOT REV PAST 2000 RPM ,IT DOENS SPUTTER OR BUCK ,I CAN FLOOR THE PEDAL BUT NO RESPONSE PAST 2000.

THIS ENGNE HAS NEVER SEEN THE ROAD SINCE I GOT IT.

IT WAS ORIGINALLY INSTALLED BY A SHOP HERE IN SAN ANTONIO.I PULLED IT FROM THEM AFTER IT TOOK A YEAR FOR THEM TO GET THIS FAR.

THEY OBVIOSLY DID NOT KNOW WHAT THEY WERE DOING BUT NOW IM STUCK WITH THIS PROBLEM AND I DONT KNOW WHERE TO GO FROM HERE.

CAN I TAKE THIS TO A SHOP THAT HAS A CONSULT AND HAVE THEM DIAGNOSE IT OR WILL THEY NOT WORK ON IT BECAUSE THE CAR DID NOT COME WITH THIS MOTOR.

CAN ANYONE RECOMMEND A SHOP IN SAN ANTONIO THAT CAN DO THIS KIND OF WORK.I WORK LONG HOURS AND CANT EASILY WORK ON THE CAR.PLEASE CAN SOMEONE HELP ME.YES I AM BEGGING.ANDREW PERRY [email protected]

[jin3001]

not correctly,i sent the wiring back to yuri myself and he fixed it under warranty.every one tells me its the mafs but i have had one from a running sr and it still does the same thing.

[jin3001]

car wont revpast 1800-2000rpm.been told over and over its my mafs.i have two mafs both are for this vehicle,tried both with same results.i need to know how to test these mafs to be sure they work.another problem im having is my scanner cannot communicate with the vehicle computer through the obdII port.the wiring was done by yuri as wiring specialties.another thing i noticed was my reverse lights do not work.im assuming they are supposed to work(sarcasm)there is a small plug over by my ecu that looks like it runs to the back of the vehicle,it is attached to the same spot as the secondary plug on the main ecu harness in the kick panel but nothing is plugged into it.well as you san read i have a few minor problems and one major problem sooo.any ideas?

[180fan]

reverse plug is at your transmission harness, not the ecu harness that the guys at wiring specialties will do.

Your mafs not working, check to make sure you've first got continuity across the harness to the mafs. Next make sure the plugs are actually making contact with the mafs, it might be a good idea at this point to make sure you don't have alot of gunk on the plugs that will screw up the connection between the plug and the mafs. post back what you get.

do you have anything else sitting between the mafs and the ecu like perhaps an afc?

[DukeBoy]

I would double check that the wiring for the maf was done correctly. There are only 3 wires so it shouldn't be that hard to figure out. I would also check to make sure that your turbo lines are secured properly. I know a big boost leak will make the car run poorly and it might seem like a bad maf. Check your intercooler and you hot/cold pipes and connections. Check your throttle possition sensor too. Disconnect it and see if it helps. Try and disconnect your maf and see how high the rpms go. Did they upgrade injectors or anything? was it supposed to be tuned?

[jin3001]

PIPING SEEMS GOOD,MAFS UNPLUGGED STILL SAME RESULTS.

[jin3001]

the harness wires are just draped over enine tiil the proble is resolved,then ill clean them up.