Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - SR20det problems... $25 REWARD for getting this fixed for me!

anyotherone · 12-28-2007, 02:53 PM

I have been working on an SR20det and it is about to be the death of me. Here's the low-down:

It's a totally stock redtop swap in an S14. It runs pig rich at idle and goes dangerously lean under any boost. Here's what has been checked:

Fuel pressure is good

Mafs (Z32) is good, safc settings at 2in 6out, but changes make no difference!

Wiring harness checks out, only there is no knock sensor?

Coolant temp sensor new

TPS is good per fsm

compression good

New CAS, timing set to 15degrees using correct procedure

Two ECU's, both 62's, one starts the car and runs as stated above, light comes on but will not let you pull the code, the other ecu throws code 55 cranks, fires, and dies immediately... wideband reads lean.

Any help would be greatly appreciated!

12-28-2007, 02:53 PM	#1
anyotherone Zilvia Junkie Join Date: Jun 2005 Location: Dallas, TX Posts: 330 Trader Rating: (8)	SR20det problems... $25 REWARD for getting this fixed for me! I have been working on an SR20det and it is about to be the death of me. Here's the low-down: It's a totally stock redtop swap in an S14. It runs pig rich at idle and goes dangerously lean under any boost. Here's what has been checked: Fuel pressure is good Mafs (Z32) is good, safc settings at 2in 6out, but changes make no difference! Wiring harness checks out, only there is no knock sensor? Coolant temp sensor new TPS is good per fsm compression good New CAS, timing set to 15degrees using correct procedure Two ECU's, both 62's, one starts the car and runs as stated above, light comes on but will not let you pull the code, the other ecu throws code 55 cranks, fires, and dies immediately... wideband reads lean. Any help would be greatly appreciated!