SR20DET helppp - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

flip3d · 02-11-2008, 05:54 PM

K, I just finished swapping in my redtop. I have spark, fuel, and she starts right up.

Now here's the problem. When I start it up, it immediately revs to 2000RPMs and stay for a few seconds before jumping to 4000RPMs. I kinda get scared and turn the car off before it gets any higher than that. ECU was throwing a code 34 which is the knock sensor. Turned out that it was bad gas and tons of rust in the tank. So I got that fixed. No rust in the tank and fresh 93, code 55, but the problem is still there. It smells like the car is running really rich. I'm not sure of the condition of the turbo. Could a bad turbo cause the RPMs to just go up.

02-11-2008, 05:54 PM	#1
flip3d Zilvia FREAK! Join Date: Feb 2008 Location: Ft Lauderdale, FL Age: 37 Posts: 1,473 Trader Rating: (1) Feedback Score: 1 reviews	SR20DET helppp K, I just finished swapping in my redtop. I have spark, fuel, and she starts right up. Now here's the problem. When I start it up, it immediately revs to 2000RPMs and stay for a few seconds before jumping to 4000RPMs. I kinda get scared and turn the car off before it gets any higher than that. ECU was throwing a code 34 which is the knock sensor. Turned out that it was bad gas and tons of rust in the tank. So I got that fixed. No rust in the tank and fresh 93, code 55, but the problem is still there. It smells like the car is running really rich. I'm not sure of the condition of the turbo. Could a bad turbo cause the RPMs to just go up.

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