Thread: 1404 code and EGR Valve

I would remove the EGR and clean it up.

Conditions for setting the code.

1. EGR Postition Sensor is .28 volts more than the EGR Learned Minimum Position parameter when the Desired EGR Position is commanded to 0% for 20 seconds
2.
The EGR Position Sensor parameter is more than 40% and is steady for .5 seconds after a test failure and before the next test will be run.
3. The above conditions are met 4 times.

I had mine off when I replaced my LIM gasket last year and I just cleaned every part of it that I could with regular brake cleaner.

As for where it is located, if you stand at the front of the car, looking at the engine it will be on the back side of the engine, right hand corner. Just behind the throttle body. Below is a picture of what it looks like.

FYI, you don't have to take it as far apart as Scotty did for a P1404 code. Just unplug the electrical connection then remove the two bolts at the valve itself and lift it off.

I picture is worth a 1000 words.

Yeah, I guess I should have clarified that. I was just using that more as a reference to what it looked like. But good point nonetheless.

Originally Posted by SyntheticShield

Yeah, I guess I should have clarified that. I was just using that more as a reference to what it looked like. But good point nonetheless.

not meaning to step on toes. I only mentioned the quick way because some people have trouble sealing those tubes up after removing them.

Originally Posted by IndeedSS

not meaning to step on toes. I only mentioned the quick way because some people have trouble sealing those tubes up after removing them.

You stepped on no toes and Im glad you pointed that out. If you ever step on my toes I will definitely let you know. One of my pet peeves is people that keep that stuff in and let it boil to such a point they explode on you later on for something completely unrelated.

Id rather explode on you now and enjoy the moment

Just kidding, I'll let you know if you cross me. I'll say my piece from my perspective, listen to yours and we'll move on down the road and it will be done with.

You are welcome, glad I could help. I have seen EGR gaskets in Autozone and Advanced Auto. Now whether they have them for our car is another matter completely.

I have never used seafoam, I use another product to keep the engine clean and it doesnt require a change in the plugs either and it does such a good job, I have been able to see it on oil analysis testing.

I've had my EGR off a few times and never had to replace the gasket. However, my car is an 04 so I'm not sure how much they will deteriorate over time. Better to have one on hand just in case.

Wellp,

I got a gasket from autozone. They didn't have one for an 04 but they had one from an older model where the surfaces were very similar. I put it on top of a 2004 EGR that they had. It fits almost 100% but alignment of the screws was correct. Plus it was metallic-like, similar to the old one.

The Advanced auto parts guy told me to try spraying and soak some Seafoam Deep Creep down there. It's Seafoam mixed with PB blaster. He told me to expect to see smoke because of the carbon.
Sea Foam--products

I'll let you guys know what happens.

Off-topic:
I put some seafoam in the gas tank. Probably won't see a difference for a while. I'm guessing its the same stuff lucas and all the others sell. Its 50 yrs old stuff so I assume its just probably just a strong solvent and nothing more.

Her is someone putting it in a SC400. I think the white smoke is the seafoam and not the carbon as so many people say.
YouTube - How to Seafoam Sc400

I'll have to defer to someone with more experience with the EGR, Ive never had any issues with it that I know of.

I for one would love to see the instructions to add to my library and, if you wanted, post in the How To section. This is all good stuff.

Who would have thought it that simple.