MAF SR Problem

SON240sx Automotive
1

Thanks to sashas jdm magic my SR finally runs, and well.

but theres a problem,

At first the car wouldnt rev past 2500 and it idled at 1700 rpm.

We checked the wiring, and it was fine so we assumed it was a broken maf or plug,

That night i went and picked up another maf, and im sure this one is a good maf.

Wired it up with the new plug, checked wiring, started it up same problem, hits 2500 and wont go further,

i checked all the wiring extensions to the maf, there all right.

So, now im confused

we think i should try running the car n/a to see if its a turbulance in the intake issue.

Any suggestions.

2

ECU is limiting your revs, therefore there is a problem.

Most likley electrical, do as Ed said and check codes…

Just cause you got a new MAFS doesn’t mean the connections are good.

3

ECU flashed 14 (Mass Air Flow Sensor)

so yes its in safe mode because of the MAFS but WHY THE FUCK ISN"T IT TAKING THE NEW MAFS?

i checked all thel wiring right up to the plug, the ground has 0 resistance to the head (so im assuming the ECU as well - i could check that) the black/white has 12v coming in, and the white signal has 0 resistance from the pin on the ecu to the pin on the mafs plug (i.e. the wire is fine)

At first i thought the hotwire in the mafs was no good, but after trying a new mafs and plug it should be fine.

Since the MAFS code can come up due to turbulence or “unreasonable mafs readings” i thought maybe there is some sort of vortex created by scotts ghetto intake piping, so try it N/A or whereever else you can plug it into… very strange issue.

Also hes tried this ECU on another car however only started it did not rev it - possibly the pins on the ecu and plug aren’t making a connection and just didnt notice this when testing it on another car

this post is for scott and anyone else tryign to help us out :stuck_out_tongue:

4

the ground goes the the ECU, but the ECU grounds to the chassis, which is also grounded to the engine.

It goes like this > Maf ground wire > ECU main ground > on one wend othe ECU main ground is hte ECU, the other end is a chassis ground on the engine.

5

hey i had the same problem the computer went into limp mode we dicked around for hours thinking it was the wireing but it ended up we forgot u need a Mafs from a sohc KA we were using the dohc that could be ur problem also check up and down ur shilded section running to ur mafs there could be a section thats picking up intereferince hope i could help
Cheers
Chris

6

PROBLEM SOLVED

ECU BLUE PLUG HAD NO METAL PIN FOR ECU IMPUT, SORRY FOR CAPS IM AT A DATA ENTRY PLACE

LOL.

7

Ya sasha got my car to run by fixing my wiring problem to start with, he is pimp at wiring.