SR20DET bogs. Need some help... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ultimateirving · 12-26-2012, 04:18 PM

Quote:

Originally Posted by Jake_240sx

I agree with 12, MAFS.
My FSM says 34 is Knock Sensor.
Thoughts?
Jake

oops my bad, looked at wrong code, ur right 34 is knock.
This can be checked pretty easy too, but you need a multi meter

Jake_240sx · 12-26-2012, 06:37 PM

UPDATE:
Conducted another boost leak check, found a few pin hole leaks in silicone boot seals, sealed them up, and now no leaks(tested to 15psi).
Chased out the Knock Sensor code. Can't seem to find anything wrong.
When disconnected she runs no differently.
Chased out the MAFS code. Again, can't seem to find anything wrong.

I have noticed that during idle when she stumbles(feels like a misfire) that the A/F ratio leans out temporarily. I am hoping to borrow a know good fuel rail, FPR, and injectors from a friend and see if that's the issue.
Might not be able to get my hands on that until the day after tomorrow.
I'm open to other suggestions in the mean time, I've got a day to kill anyway.
Jake

ultimateirving · 12-26-2012, 09:02 PM

U should spend a few bucks and buy a multi meter, You can test so many things with it! so many activities with a multi meter.
Honestly tho, if u get one Id start testing voltage and continuity on the MAFS,TPS, and CTS.

Jake_240sx · 12-26-2012, 09:11 PM

Have a multi meter. I've been checking against fsm values. Resistance and voltage, etc.

12-26-2012, 09:02 PM	#3
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 37 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	U should spend a few bucks and buy a multi meter, You can test so many things with it! so many activities with a multi meter. Honestly tho, if u get one Id start testing voltage and continuity on the MAFS,TPS, and CTS. __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

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12-26-2012, 06:37 PM	#2
Jake_240sx Leaky Injector Join Date: Nov 2012 Location: VA Beach Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	UPDATE: Conducted another boost leak check, found a few pin hole leaks in silicone boot seals, sealed them up, and now no leaks(tested to 15psi). Chased out the Knock Sensor code. Can't seem to find anything wrong. When disconnected she runs no differently. Chased out the MAFS code. Again, can't seem to find anything wrong. I have noticed that during idle when she stumbles(feels like a misfire) that the A/F ratio leans out temporarily. I am hoping to borrow a know good fuel rail, FPR, and injectors from a friend and see if that's the issue. Might not be able to get my hands on that until the day after tomorrow. I'm open to other suggestions in the mean time, I've got a day to kill anyway. Jake

12-26-2012, 09:11 PM	#4
Jake_240sx Leaky Injector Join Date: Nov 2012 Location: VA Beach Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	Have a multi meter. I've been checking against fsm values. Resistance and voltage, etc.