Z32 Maf issues sr20det - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Javas13 · 07-20-2019, 04:16 PM

New working on cars ended up buying a sr20det s13 anyways. Been working on this car for the past 4 weeks and the last thing is the maf. Ecu is reading code 12. Decided to change the maf to an isr z32 maf and the car dies immediately. The maf before was also a z32 but using the old on the car stays on, idles but only could rev up to maybe 2500 rpms. Not sure if all I need is a tune. Any help would be appreciated thank you.

Javas13 · 07-20-2019, 04:20 PM

Here's a video of using the new isr maf

https://youtu.be/xon1PQl9ftA

This is how it ran before the change

https://youtu.be/TglbWysbMFY

ultimateirving · 07-20-2019, 05:40 PM

Could be that wiring is slightly different. Check the signal wire and 12v matches the new MAF.

Javas13 · 07-20-2019, 05:57 PM

Just checked wiring is good but my 12v is only getting 11v and the 5v is getting .90v for some reason

S14rebuild · 07-21-2019, 07:10 PM

What are you tuning with to allow the sr20 to run a z32 maf?

Javas13 · 07-21-2019, 10:12 PM

Quote:

Originally Posted by S14rebuild

What are you tuning with to allow the sr20 to run a z32 maf?

Not sure still new to all this. I bought the car this way already. I was planning on taking it to a tuner hopefully this week

ultimateirving · 07-22-2019, 12:37 PM

What’s the part number on the old maf

Javas13 · 07-22-2019, 01:14 PM

Quote:

Originally Posted by ultimateirving

What’s the part number on the old maf

Not sure car came with it only numbers that are on it is 1504 but here's the differences between the old and new one

https://ibb.co/cNkzbcW
https://ibb.co/yPD6gFt
https://ibb.co/v470h5G

https://m.imgur.com/gallery/IK1tN2x

*brndck* · 07-22-2019, 03:08 PM

Quote:

Originally Posted by Javas13

Not sure car came with it only numbers that are on it is 1504 but here's the differences between the old and new one

https://ibb.co/cNkzbcW
https://ibb.co/yPD6gFt
https://ibb.co/v470h5G

https://m.imgur.com/gallery/IK1tN2x

https://ibb.co/v470h5G
ummmmm the one on the left only has 4 prongs
the one on the right has 5
this concerns me.

Javas13 · 07-23-2019, 12:34 AM

Quote:

Originally Posted by brndck

https://ibb.co/v470h5G
ummmmm the one on the left only has 4 prongs
the one on the right has 5
this concerns me.

Yea me too. I ordered one off import image in their pictures it looked Identical to the old one I have so I ordered it but they sent another isr 4 pin one. So I'm talking to their support to see what's up

gaz_moose · 07-24-2019, 01:56 PM

is your new one genuine?

Javas13 · 07-24-2019, 03:02 PM

Quote:

Originally Posted by gaz_moose

is your new one genuine?

No that's my next list of things to try. Im picking one up tomorrow

jedi03 · 07-25-2019, 09:30 AM

when i was having tuning issues with enthalpy turned out my maf was bad, brand new from autozone...he advised they are hit or miss but got me up and running...

Javas13 · 07-28-2019, 03:39 AM

Quote:

Originally Posted by jedi03

when i was having tuning issues with enthalpy turned out my maf was bad, brand new from autozone...he advised they are hit or miss but got me up and running...

So far I've tried 3 different mafs two isr mafs and one oem all do the same but the on I had on the car when I purchased it. That's the one that keeps the car idling fine but doesnt rev passed 2500

*brndck* · 07-28-2019, 12:42 PM

Quote:

Originally Posted by Javas13

So far I've tried 3 different mafs two isr mafs and one oem all do the same but the on I had on the car when I purchased it. That's the one that keeps the car idling fine but doesnt rev passed 2500

Mmmmmmmmaybe you should check your wiring instead?

jedi03 · 07-29-2019, 09:46 AM

+1 check all wiring, make sure ecu isn't fried and last get retune...

Kingtal0n · 07-29-2019, 11:00 AM

If engine RPM stops at 2500

that means the ECU does not see ANY MAF AT ALL (its like having no maf)

ultimateirving · 08-05-2019, 03:54 PM

So consider with the new maf plugged in, are there any leaks ? If it’s reading the maf but had a bad vacuum leak it will run like poo

EFITTZY · 08-15-2019, 10:49 AM

Just for reference use the jim wolf diagram

http://jimwolftechnology.com/wolfpdf...%20NISSANS.PDF

jedi03 · 08-21-2019, 10:34 AM

http://www.sr20forum.com/240sx/12922...af-sensor.html or this one if pictures help better!

07-20-2019, 04:16 PM	#1
Javas13 Join Date: Jul 2019 Location: SoCal Age: 26 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Z32 Maf issues sr20det New working on cars ended up buying a sr20det s13 anyways. Been working on this car for the past 4 weeks and the last thing is the maf. Ecu is reading code 12. Decided to change the maf to an isr z32 maf and the car dies immediately. The maf before was also a z32 but using the old on the car stays on, idles but only could rev up to maybe 2500 rpms. Not sure if all I need is a tune. Any help would be appreciated thank you.

07-20-2019, 05:40 PM	#3
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 36 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	Could be that wiring is slightly different. Check the signal wire and 12v matches the new MAF. __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

07-22-2019, 12:37 PM	#7
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 36 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	What’s the part number on the old maf __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

08-05-2019, 03:54 PM	#18
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 36 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	So consider with the new maf plugged in, are there any leaks ? If it’s reading the maf but had a bad vacuum leak it will run like poo __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

08-15-2019, 10:49 AM	#19
EFITTZY Zilvia Junkie Join Date: Mar 2016 Location: I n d i a n a Age: 28 Posts: 349 Trader Rating: (0) Feedback Score: 0 reviews	Just for reference use the jim wolf diagram http://jimwolftechnology.com/wolfpdf...%20NISSANS.PDF __________________ (づ｡◕‿‿◕｡)づ T E A M B L O O M

07-20-2019, 04:20 PM	#2
Javas13 Join Date: Jul 2019 Location: SoCal Age: 26 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Here's a video of using the new isr maf https://youtu.be/xon1PQl9ftA This is how it ran before the change https://youtu.be/TglbWysbMFY

07-20-2019, 05:57 PM	#4
Javas13 Join Date: Jul 2019 Location: SoCal Age: 26 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Just checked wiring is good but my 12v is only getting 11v and the 5v is getting .90v for some reason

07-21-2019, 07:10 PM	#5
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,495 Trader Rating: (8) Feedback Score: 8 reviews	What are you tuning with to allow the sr20 to run a z32 maf?

07-24-2019, 01:56 PM	#11
gaz_moose Zilvia Member Join Date: Mar 2008 Location: engerland Posts: 242 Trader Rating: (0) Feedback Score: 0 reviews	is your new one genuine?

07-25-2019, 09:30 AM	#13
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,836 Trader Rating: (8) Feedback Score: 8 reviews	when i was having tuning issues with enthalpy turned out my maf was bad, brand new from autozone...he advised they are hit or miss but got me up and running...

07-29-2019, 09:46 AM	#16
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,836 Trader Rating: (8) Feedback Score: 8 reviews	+1 check all wiring, make sure ecu isn't fried and last get retune...

07-29-2019, 11:00 AM	#17
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 41 Posts: 4,828 Trader Rating: (17) Feedback Score: 17 reviews	If engine RPM stops at 2500 that means the ECU does not see ANY MAF AT ALL (its like having no maf)

08-21-2019, 10:34 AM	#20
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,836 Trader Rating: (8) Feedback Score: 8 reviews	http://www.sr20forum.com/240sx/12922...af-sensor.html or this one if pictures help better!