z32 problems (once again) sr20det - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sblack13 · 03-21-2006, 08:14 AM

so i had my car running for a week perfect. It is soo fast, before the car idled perfect 900rpm ish. Now the car shakes violently at idle and is very slow. All of a sudden when driving i heard a loud backfire and the power instantly cut off. Can maf's go bad like this? i'm using a z32 maf and safc2 setting are 2in 5 out i'm using a s14 sr20det.

When i unplug the maf the car idles like once before.
when i plug the maf in, car wants to die.

Checked wiring it seems good.

curtflirt · 03-25-2006, 01:34 PM

I have an sr20det s14 blacktop with an s14 mafs. If i upgrade to a z32 mafs and 550 nismo injectors, would I have to flash my ecu if I have a safc.? And how do I set it if I don't need a flash.

I also have a similiar problem with my stock mafs. This is why i might need to upgrade sice there are no s14 mafs available.

RedSuns · 03-26-2006, 03:41 PM

Quote:

Originally Posted by sblack13

so i had my car running for a week perfect. It is soo fast, before the car idled perfect 900rpm ish. Now the car shakes violently at idle and is very slow. All of a sudden when driving i heard a loud backfire and the power instantly cut off. Can maf's go bad like this? i'm using a z32 maf and safc2 setting are 2in 5 out i'm using a s14 sr20det.

When i unplug the maf the car idles like once before.
when i plug the maf in, car wants to die.

Checked wiring it seems good.

are you sure that you didn't blow an intercooler pipe loose?

smithers584 · 03-26-2006, 05:30 PM

curtflirt, dont ever come into a thread that someone has started so they can receive help and then ask a totally different question. its ok if you have the same problem, but tuning and ecu's should be another thread. if you want answers to that, start another thread you will receive them.

as far as your mafs go, have you shot it with a meter to check for your voltage? i believe its .8v-1.5v at idle and 1.4v-2.0v at 3000rpm between pin 1 and ground. make sure the engine is warmed up. i also agree with checking your intercooler piping. if you have a SAFC, it has a sensor check, IN 1 is your maf, you can use that to read the voltage from.

sblack13 · 03-31-2006, 11:09 PM

Quote:

Originally Posted by RedSuns

are you sure that you didn't blow an intercooler pipe loose?

lol i feel like a dumbass, this was the problem. gahh.

andrewmp6 · 04-01-2006, 12:24 AM

sblack your maf is bad or hooked up wrong or you got a intercooler pipe loose

kuramaya · 04-01-2006, 06:31 AM

Wow!!! You should read my Z32 MAFS write up...your settings are fucked up and I hope you didnt jack up your motor 4 life...

Hint Hint

In and out settings are wrong bro...

http://www.zilvia.net/f/showthread.php?t=97556

kuramaya · 04-02-2006, 07:54 PM

I didnt see any reply, what happened?

Black240Ct · 07-31-2009, 12:26 PM

Quote:

Originally Posted by kuramaya

Wow!!! You should read my Z32 MAFS write up...your settings are fucked up and I hope you didnt jack up your motor 4 life...

Hint Hint

In and out settings are wrong bro...

http://www.zilvia.net/f/showthread.php?t=97556

sorry to bring up an old thread but i was searching this topic and figure id help other ppl searching this

i read your how to. i love it.
but the 2in and 6 out doesnt work for an s14sr and a s15sr ( or so ive read)
the correct settings for a s14/s15 are 2in and 5out

03-21-2006, 08:14 AM	#1
sblack13 Zilvia FREAK! Join Date: May 2005 Location: Seattle Age: 38 Posts: 1,016 Trader Rating: (10) Feedback Score: 10 reviews	z32 problems (once again) sr20det so i had my car running for a week perfect. It is soo fast, before the car idled perfect 900rpm ish. Now the car shakes violently at idle and is very slow. All of a sudden when driving i heard a loud backfire and the power instantly cut off. Can maf's go bad like this? i'm using a z32 maf and safc2 setting are 2in 5 out i'm using a s14 sr20det. When i unplug the maf the car idles like once before. when i plug the maf in, car wants to die. Checked wiring it seems good.

03-25-2006, 01:34 PM	#2
curtflirt Join Date: Jan 2003 Location: new jersey Age: 42 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	help I have an sr20det s14 blacktop with an s14 mafs. If i upgrade to a z32 mafs and 550 nismo injectors, would I have to flash my ecu if I have a safc.? And how do I set it if I don't need a flash. I also have a similiar problem with my stock mafs. This is why i might need to upgrade sice there are no s14 mafs available.

04-01-2006, 06:31 AM	#7
kuramaya Nissanaholic! Join Date: Dec 2004 Location: 沖縄 , Japan Age: 52 Posts: 1,677 Trader Rating: (1) Rides Gallery: kuramaya Feedback Score: 1 reviews	Wow!!! You should read my Z32 MAFS write up...your settings are fucked up and I hope you didnt jack up your motor 4 life... Hint Hint In and out settings are wrong bro... http://www.zilvia.net/f/showthread.php?t=97556 __________________ ZEROYON WEBSITE IS HOMO NEW SITE: blacklinux.com/innersanctum/index.php

04-02-2006, 07:54 PM	#8
kuramaya Nissanaholic! Join Date: Dec 2004 Location: 沖縄 , Japan Age: 52 Posts: 1,677 Trader Rating: (1) Rides Gallery: kuramaya Feedback Score: 1 reviews	I didnt see any reply, what happened? __________________ ZEROYON WEBSITE IS HOMO NEW SITE: blacklinux.com/innersanctum/index.php

03-26-2006, 05:30 PM	#4
smithers584 Zilvia Junkie Join Date: Dec 2004 Location: sc Posts: 416 Trader Rating: (0) Feedback Score: 0 reviews	curtflirt, dont ever come into a thread that someone has started so they can receive help and then ask a totally different question. its ok if you have the same problem, but tuning and ecu's should be another thread. if you want answers to that, start another thread you will receive them. as far as your mafs go, have you shot it with a meter to check for your voltage? i believe its .8v-1.5v at idle and 1.4v-2.0v at 3000rpm between pin 1 and ground. make sure the engine is warmed up. i also agree with checking your intercooler piping. if you have a SAFC, it has a sensor check, IN 1 is your maf, you can use that to read the voltage from.

04-01-2006, 12:24 AM	#6
andrewmp6 Zilvia Junkie Join Date: Nov 2005 Location: kentucky Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	sblack your maf is bad or hooked up wrong or you got a intercooler pipe loose