Iat sensor stuck at same temperature. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Sterlingaidenk · 11-17-2020, 11:51 AM

My iat is stuck at -40 degrees, it is a two wire iat, with a grey plug. cel for the iat has been on for the past 2 yrs and emissions are coming up soon, cant pass unless it's fixed. Brand new engine wiring harness, 5 point ground kit. Swapped out ECU's and problem continues, currently a stock a/t ka24de s14. Also has egr delete, not sure if its linked up to anything else in a circuit some way(unused plugs).Tried different iat's from new, to some from the junkyard and all of them are the same way. What am I missing?

S14rebuild · 11-17-2020, 12:09 PM

How u gonna pass emissions with egr deleted?

Sterlingaidenk · 11-17-2020, 12:19 PM

I hid all the extra wiring. The car runs very clean too, it's just the cel that makes me not pass.

S14rebuild · 11-17-2020, 12:42 PM

Cel will come on for no egr aswell...

But id pull-out the multimeter and start proben the harness... voltage in and voltage out

Sterlingaidenk · 11-22-2020, 10:50 AM

I have tested for a voltage and have no voltage coming from the harness connector, I tested the other terminal on the harness connector for continuity and that was a success. So now it's just figuring out my voltage problem.

11-17-2020, 11:51 AM	#1
Sterlingaidenk Join Date: Jun 2019 Location: Colorado Age: 22 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	Iat sensor stuck at same temperature. My iat is stuck at -40 degrees, it is a two wire iat, with a grey plug. cel for the iat has been on for the past 2 yrs and emissions are coming up soon, cant pass unless it's fixed. Brand new engine wiring harness, 5 point ground kit. Swapped out ECU's and problem continues, currently a stock a/t ka24de s14. Also has egr delete, not sure if its linked up to anything else in a circuit some way(unused plugs).Tried different iat's from new, to some from the junkyard and all of them are the same way. What am I missing?

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11-17-2020, 12:09 PM	#2
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	How u gonna pass emissions with egr deleted?

11-17-2020, 12:19 PM	#3
Sterlingaidenk Join Date: Jun 2019 Location: Colorado Age: 22 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	I hid all the extra wiring. The car runs very clean too, it's just the cel that makes me not pass.

11-17-2020, 12:42 PM	#4
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Cel will come on for no egr aswell... But id pull-out the multimeter and start proben the harness... voltage in and voltage out

11-22-2020, 10:50 AM	#5
Sterlingaidenk Join Date: Jun 2019 Location: Colorado Age: 22 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	I have tested for a voltage and have no voltage coming from the harness connector, I tested the other terminal on the harness connector for continuity and that was a success. So now it's just figuring out my voltage problem.