97 maxima, 95 ECU,

After driving around a little bit the EGR P1400 popped up. I have the EGR temp sensor and EGR solenoid plugged in.

Im wondering if the EGR green solenoid needs a vac source to not get a code. I have to be code free to pass emissions and that’s the only code I have right now after the 3.5 swap. Any thoughts? Suggestions?

I also have the 95 rear O2 swapped and wired in. No issues there.

 

Have you tried a different solenoid?

 

I haven’t. I have to look up how to test it and make sure it’s working. I guess I can buy another one.

You don’t think it needs vacuum? It probably doesn’t now that I think of it. How would it knows it has vacuum or not, it’s just an electrical gate valve.

 

I don't think vacuum matters, the solenoid wouldn't know. The ECU may want to see the EGR temp sensor change but that would be a different code I'd think.

Give it power see which ports open vs no power.

 

I have it plugged it. But again, I need to check and see if it’s doing anything. I’m pretty sure I’ve seen a procedure to test it in the FSM.

 

I realized 2 things.

1- the green plug is just sitting in the bay. I only have now the brown solenoid plugged in.

2- the brown solenoid wasn’t plugged in either. Now it is, are the Green and Brown solenoids the same or do similar things?

 

What ECU are you using again?

 

95 ECU, I thought I had the ECU that didn’t use the evap or EGR stuff. I guess not.

 

95 fed spec uses a simplified EVAP and EGR layout, no stepper motor. Less sensors and more mechanical in operation. I have a diagram somewhere.

 

 

Cool let me see if you could. I’ll take a pic of my ecu and post it later.

 

I assume if I plug in the green solenoid and it doesn’t clear to code then I’ll have to connect the vacuum lines. The EGR valve is gone though, don’t have that. Can’t see why the green solenoid would need to see a vacuum to clear the code. I’ll post my results once I have the Green solenoid.

 

You can trim the tabs off the solenoid to plug in the other connector. You don't need 2 solenoids on the fed spec.

 

So the brown or green one will do the same thing? You’re saying, Trim off the tabs on the brown solenoid and plug in the green harness plug to that?

 

I always assumed they operate the same, just plumbed differently. They open and close, connecting 2 ports to a device depending on what the ECU says.

They color code them so they don't get mixed up and they change the offset of the tabs so you don't plug them in wrong. But that's so stock stuff for the layman. Obviously this thread isn't about being stock lol.

Test that solenoid so we don't have to guess. Also I can't tell you which connector goes to the ECU. A 95 wire harness is different and wouldn't have the extra connectors.

 

Yea lots of extra plugs left over from auto. The green connector in the photo I assume is for the EGR solenoid. I’ll check for voltage at the green harness plug. I should read something if it’s opening the solenoid. I’ll aloe sure the brown solenoid works.

 

Green plug in brown solenoid

tested the solenoid and it works. Not sure if it matters if the green or brown one is used. I had to shave a part of the plastic on the solenoid to get the green plug on. Hopefully that will do it.

Does anyone know how to trick the Egr if this doesn’t work? I heard Aaron used 2 resistors but not sure where or what was done exactly.