Hello

I have a 2000 cali-spec Maxima. My original engine retired so I swapped in a fed-spec engine. I realized afterwards that there are few key diferences. My main concern is the lack of a swirl control valve on the fed-spec engine. When my project was complete, I have an open vacuum line that attatches to the swirl control valve actuator under the intake manifold. I had to check my Haynes manual to find out where it went. I used my original wiring harness and intake manifold part that has the VIAS/Swirl Control solenoid valves on the side of the manifold, so those vacuum lines and sensors are connected. But now, my service engine soon warning is on.

P1130 - Swirl Control Valve
P0505 - Idle Control System Malfunction

Is there a known work around for this? - Thank you

 

Have you triple checked all your connections? Wire harness connection to the valve? All of the vac lines involved?

 

An extra check I can do, but the only vac line I noticed open is the one to the swirl valve actuator

 

When the IACV goes out, which it ultimately will, the circuit to the computer shorts out causing the ECU to burn up. There should be a fuse of some kind to protect it, but there isn't. When the ECU goes out, it is a very costly repair, and anybody knows how to put fuse and on which wires?

 

is that true? i know some people who run thier engines w/o it?

 

w/o what? ecu? u can't run ur engine w/o ecu! first this cars has immobilizer, 2. ecu controls engine.

 

Your comment was about the IACV, he replied directly after you, which leads us to assume he meant the IACV.

With as little faith as I have with people on this forum, even I don't think he could've meant the ECU.

 

""""When the IACV goes out, which it ultimately will, the circuit to the computer shorts out causing the ECU to burn up. """"


I've never heard that before...

Lol @ pmohrs comment

 

That's what happened with my car, v starih maxima ya eshyo ne slishal chtob takoe bilo, e'to tol'ka u 00-03 Max bivaet.

 

moi novi motor iz 2001....

 

Welcome to America! Now speak english!

Hero, weren't you the one saying 90% of Maxima owners have replaced there O2's and 70% had to replace there IACV?

 

America is free country u can speak any Language u want and i'm talking to him only, don't worry it's not about u

Yes. i am! and still didn't fix my car yet, i already ordered new ECU so i'm waiting for it, u so worry about this? u better try to find where to put fuse for ecu it would be very helpful for a lot of 00-01 Maxima owners.

 

anyone found out where to put the fuse for that iacv? i just had to buy a new ecu, my last one was toast, where can i find the iacv anyhow on my car? i need to inspect it and see if maybe that thing fried my last ecu, i would need to replace it before installing the new one i just got in

 

 

If you want to protect your ECU, add 2 5amp fuses at the IACV harness for pin 2 and 5. I have enclosed a schematic and the red box is where the fuse modification should be made.
The STA309a chip maximum amps specs for the Drain are 3 amps and 6 amps when the signal pulses.

When the IACV seizes it will push up to 15 amps from the designed circuit (fuse 58) which will fry the chip which is rated at 6 amps max.

 

thanks guys

 

well, just an update. regarding the swirl control and code P1130, since the Fed-spec engine doesn't have one, I just taped off the end of the vacuum line that goes to it. The swirl control vacuum check switch thinks that it's applying vacuum to the valve, when it's perfectly happy sucking on itself . As for the P0505, I found that my cruise control throttle cable somehow became too tight. It kept the throttle open just enough to be out of the range that the IACV could compensate for. I never really use my cruise so I just disconnected the line. Idle is perfect now. No codes for the past 4 months(first time since I bought the car) and no damaged IACV or ECU. So if you have a P0505, I'd start with my throtle cables first and see if they're out of wack.

 

want to trade ecus? i have a cali engine, and fed spec ecu sitting on my desk that is going in to replace my burnt cali ecu

 

How would you suggest for the cables to be? not tight, kind of loose? I have po505 but my idle is not jumpy at all. the car just dies without warning