Check engine (0100 codes mass air flow sensor and 0325 knock sensor) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

95se · 06-27-2012, 12:51 PM

This is stock KA. Only mod injen intake. Check engine light came on a day after the engine started cutting out. So these two codes came up. I don't know why it would have thrown two of them since I don't think knock sensor really causes these types of symptoms. Anyway car has been in the shop for 3 weeks now and he is not sure what it is. Both sensors checked out ok. He thinks its in the wiring somewhere for the MAF. He said he thinks its a ground issue but needs to check some more. Any ideas?

silver350z05rb · 06-27-2012, 12:54 PM

Knock wouldn't cause that,but a MAF would

95se · 06-28-2012, 01:18 PM

Got it back today. It ended up being a ground wire to the maf harness. Hopefully that was also causing my car starting slowly at times.

badbob2121 · 06-28-2012, 01:21 PM

Yeaahh! Fuck the tech section!

Join Date: Dec 2002 =

95se · 06-29-2012, 08:47 PM

Issue still not fixed. Started happening again today. He said it was ground wire from maf harness to engine. Re welded it but same problem. Not quite as consistent as it was. Check engine light hasn't come on yet. I assume it will soon though.

JasianBlazin · 06-29-2012, 10:59 PM

Quote:

Originally Posted by 95se

Issue still not fixed. Started happening again today. He said it was ground wire from maf harness to engine. Re welded it but same problem. Not quite as consistent as it was. Check engine light hasn't come on yet. I assume it will soon though.

id say check the plug on the MAF, are the wires exposed?

06-27-2012, 12:51 PM	#1
95se Zilvia Junkie Join Date: Dec 2002 Location: Arlington, TX Posts: 383 Trader Rating: (0) Feedback Score: 0 reviews	Check engine (0100 codes mass air flow sensor and 0325 knock sensor) This is stock KA. Only mod injen intake. Check engine light came on a day after the engine started cutting out. So these two codes came up. I don't know why it would have thrown two of them since I don't think knock sensor really causes these types of symptoms. Anyway car has been in the shop for 3 weeks now and he is not sure what it is. Both sensors checked out ok. He thinks its in the wiring somewhere for the MAF. He said he thinks its a ground issue but needs to check some more. Any ideas? __________________ z32 front brakes, spl tc rods

06-28-2012, 01:18 PM	#3
95se Zilvia Junkie Join Date: Dec 2002 Location: Arlington, TX Posts: 383 Trader Rating: (0) Feedback Score: 0 reviews	Got it back today. It ended up being a ground wire to the maf harness. Hopefully that was also causing my car starting slowly at times. __________________ z32 front brakes, spl tc rods

06-28-2012, 01:21 PM	#4
badbob2121 Zilvia FREAK! Join Date: Feb 2010 Location: St. Louis Age: 33 Posts: 1,261 Trader Rating: (7) Rides Gallery: badbob2121 Feedback Score: 7 reviews	Yeaahh! Fuck the tech section! Join Date: Dec 2002 = __________________ FOLLOW ME ON INSTAGRAM = BOBBY_LS13

06-29-2012, 08:47 PM	#5
95se Zilvia Junkie Join Date: Dec 2002 Location: Arlington, TX Posts: 383 Trader Rating: (0) Feedback Score: 0 reviews	Issue still not fixed. Started happening again today. He said it was ground wire from maf harness to engine. Re welded it but same problem. Not quite as consistent as it was. Check engine light hasn't come on yet. I assume it will soon though. __________________ z32 front brakes, spl tc rods

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06-27-2012, 12:54 PM	#2
silver350z05rb Zilvia Junkie Join Date: Apr 2008 Location: California Age: 34 Posts: 432 Trader Rating: (9) Feedback Score: 9 reviews	Knock wouldn't cause that,but a MAF would