So ive been fighting an intermittent misfire for ever...

jchammond · 05-20-2019, 01:17 AM

Sounds like you could be getting high AIT’s, which are read from one or both of the MAF’s...unsure your cai setup/ but the heat soaking can cause this problem.
Also don’t forget a possible low fuel pressure issue can cause as well & most times don’t throw a cel about fuel system; just random cylinder misfire.

Ommateal · 05-20-2019, 01:58 AM

Quote:

Originally Posted by jchammond

Sounds like you could be getting high AIT’s, which are read from one or both of the MAF’s...unsure your cai setup/ but the heat soaking can cause this problem.
Also don’t forget a possible low fuel pressure issue can cause as well & most times don’t throw a cel about fuel system; just random cylinder misfire.

yea I installed new Mafs a while ago and have basically ruled out it as a Maf Issue... that when i had it at nissan on Consult 3 for like a day. They said it was absolutely the AFsensors.

Engine is bone stock.

I have been on the fence about it being fuel related for a while... Nissan said fuel was fine but then agreed it might be bad? said it was consistent at like 35psi I think.

Sadly enough I put in new fuel basket last year to try and solve the issue, then had a minor accident literally 2 days later and the hat broke on it so I put the old one back in. Fml.

jchammond · 05-20-2019, 02:10 AM

Quote:

Originally Posted by Ommateal

yea I installed new Mafs a while ago and have basically ruled out it as a Maf Issue... that when i had it at nissan on Consult 3 for like a day. They said it was absolutely the AFsensors.

Engine is bone stock.

I have been on the fence about it being fuel related for a while... Nissan said fuel was fine. said it was consistent at like 35psi I think.

Sadly enough I put in new fuel basket last year to try and solve the issue, then had a minor accident literally 2 days later and the hat broke on it so I put the old one back in. Fml.

35 seems a bit low...not sure what spec chart is. But thinking 40-45’ish

05-20-2019, 01:17 AM	#1 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Sounds like you could be getting high AIT’s, which are read from one or both of the MAF’s...unsure your cai setup/ but the heat soaking can cause this problem. Also don’t forget a possible low fuel pressure issue can cause as well & most times don’t throw a cel about fuel system; just random cylinder misfire. Ommateal likes this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

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