Damn EGR!!

[david-b]

Ok, so I had in the past a Code P0401, which is something like a bad EGR valve. I replace the EGR sensor (with a used one[in good shape]), and still had the code. I then replaced the EGR valve (with a used one[in good shape]). It worked fine! Smooth idle, when I out the car in neutral, the rpms dropped perfeclty... everything was fine. This was a bout a month ago now.

Now, the CEL came on again, and it's the same code. However, the car is idleing fine and everything is acting normal. WTF? I replaced the 2 main components of the EGR system, it runs fine, but Im still getting the error. Any ideas here?

[Killa]

man your car start give you problem now, may i suggest "boost time"

[david-b]

Originally Posted by Killer7

man your car start give you problem now, may i suggest "boost time"

Umm yeah... This can happen to anyone. It's the EGR system, not a blown motor or anything.

[Killa]

Originally Posted by david-b

Umm yeah... This can happen to anyone. It's the EGR system, not a blown motor or anything.

yea i know, dint your 4 and 5 hard to put in ?

[ez1286]

Did you check the egr solenoid?

[david-b]

Is that the little sensor thing?



If that's it, that's been replaced with a slightly used one also.

[gthompson97]

Yes it is, and the valve is the silver piece that sits right next to that. What I did to help mine was take the pipe off that runs up to the intake mani and clean it out a bit.

[david-b]

Yeah, I was thinking of that. I dont want to tho. lol. Is there anyway to test the solenoid if it's working right? Maybe I should put my old one back on and see if that works. The problem was the EGR valve before, so maybe the new used one that has a lot of miles on it just sucks. IDK.

[gthompson97]

Well if it has alot of miles on it then it probably wasn't in the best shape in the first place. Check out how much a new one is and if you don't want to spend all the money on it, I think I have like 3 or 4 laying around here. One of them is pretty damn new and one has less than 70k.

[Thor06]

EGR block off time? Will that hurt anything, make it run shitty, or anthing else besides emissions?

[gthompson97]

It's not worth the effor to try block the EGR, then you'll just have a code ALL the time.

[david-b]

Im not blocking off the EGR. I replaced the solenoid with the original one from the car, not the one I got from another and reset the CEL. The car continued to run great. It was crappy at first, but I think that had something to do with the ECU reset and then the SAFC trying to mod it right away.

I didn't get a CEL with the original solenoid, so who knows. I also forgot I had a little hose going from the solenoid to somewhere at the back of the IM(?) that had a spliter in it. I forget why the one hose was out, but I remember I took it out for a reason. I didn't realize that it was such a strong sucking, so I blocked that off with a screw. Basically, jsut fixed a little open hose. I hope the original solenoid works fine.