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Old 07-20-2019, 04:16 PM   #1
Javas13
 
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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.
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Old 07-20-2019, 04:20 PM   #2
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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
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Old 07-20-2019, 05:40 PM   #3
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Could be that wiring is slightly different. Check the signal wire and 12v matches the new MAF.
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Old 07-20-2019, 05:57 PM   #4
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Just checked wiring is good but my 12v is only getting 11v and the 5v is getting .90v for some reason
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Old 07-21-2019, 07:10 PM   #5
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What are you tuning with to allow the sr20 to run a z32 maf?
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Old 07-21-2019, 10:12 PM   #6
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Quote:
Originally Posted by S14rebuild View Post
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
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Old 07-22-2019, 12:37 PM   #7
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What’s the part number on the old maf
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Old 07-22-2019, 01:14 PM   #8
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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
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Old 07-22-2019, 03:08 PM   #9
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Quote:
Originally Posted by Javas13 View Post
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.
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it'll fit JANK.. and no one likes Jank except Broke ass zilvians.
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Old 07-23-2019, 12:34 AM   #10
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Quote:
Originally Posted by brndck View Post

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
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Old 07-24-2019, 01:56 PM   #11
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is your new one genuine?
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Old 07-24-2019, 03:02 PM   #12
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is your new one genuine?
No that's my next list of things to try. Im picking one up tomorrow
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Old 07-25-2019, 09:30 AM   #13
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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...
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Old 07-28-2019, 03:39 AM   #14
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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
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Old 07-28-2019, 12:42 PM   #15
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Quote:
Originally Posted by Javas13 View Post
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?
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Old 07-29-2019, 09:46 AM   #16
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+1 check all wiring, make sure ecu isn't fried and last get retune...
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Old 07-29-2019, 11:00 AM   #17
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If engine RPM stops at 2500

that means the ECU does not see ANY MAF AT ALL (its like having no maf)
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Old 08-05-2019, 03:54 PM   #18
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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
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Old 08-15-2019, 10:49 AM   #19
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Just for reference use the jim wolf diagram

http://jimwolftechnology.com/wolfpdf...%20NISSANS.PDF
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Old 08-21-2019, 10:34 AM   #20
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http://www.sr20forum.com/240sx/12922...af-sensor.html or this one if pictures help better!
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