Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - $10 if you figure out my emission problem. Different ecus giving different codes.

az_240 · 02-02-2010, 09:29 PM

How can an ECU detect a vac leak if the engine is not running? I get the P1445 code immediately after clearing them. That rules out vac leaks.

I checked resistance on the evap purge valve. 19.2 ohms. FSM calls for apprx. 30.
It's a little low but everyone I talked to says the valve should be fine.

If the purge control valve really was bad I should get the same code with BOTH ECU's.

I would just replace it but it is under the intake manifold which makes it a bitch to change and the valve itself is expensive.

02-02-2010, 09:29 PM	#5
az_240 Post Whore! Join Date: Jan 2006 Location: Phx Posts: 3,097 Trader Rating: (41)	How can an ECU detect a vac leak if the engine is not running? I get the P1445 code immediately after clearing them. That rules out vac leaks. I checked resistance on the evap purge valve. 19.2 ohms. FSM calls for apprx. 30. It's a little low but everyone I talked to says the valve should be fine. If the purge control valve really was bad I should get the same code with BOTH ECU's. I would just replace it but it is under the intake manifold which makes it a bitch to change and the valve itself is expensive. Last edited by az_240; 02-03-2010 at 03:53 AM..