I need your help /o/, I'm stumped.
I've posted about my problem on three different Mustang forums now and none of them have been able to help.
My fucking EGR valves keeps breaking. I noticed that the stock one had a sizable crack in it, right where the exhaust hose screws in, so I replaced it. After driving at freeway speeds for about 15 minutes I got a check engine light, P1443. Lo and behold, the new EGR valve has a big ass crack in the same spot at the old one (pic related). What the fuck? I googled that shit up but I can't find very much. I did find a couple of threads suggesting that the cats or the muffler could be so clogged up that it makes the EGR valve blow chunks. The thing is, I live in California and the car passed smog last month so they must be flowing somewhat well right?
It also has a problem retaining pressure in the fuel system after the car is turned off but I don't that issue is related.
Any advice or ideas would be greatly appreciated.
I was just thinking that looks like a stress crack cause of how it lines up with the bolt.
I concur with this, seems like way over torqued or road vibration and shock is being transferred where it shouldn't be.
this could potentially help you out. EGR is a fucking waste of time, so what I did was remade the gasket out of a drinks can with no hole in it - a blanking plate that once rubbed in grease meant no more EGR shite and the inspection guys never noticed. If it's returning a warning light (I didn't get one) then poke a hole in it to confuse it.
Seriously, fuck EGR valves.
the egr tube that goes into it might be bent, somehow its getting pressure against the egr somehow.
Also more than likely your using a Chinese part, you wouldn't believe the shit quality of the metal and parts in a Chinese 'OE' replacement.
Look into possibly replacing the EGR tube and EGR with FORD parts. If i remember correctly, ford egr's cost ~120$.
Just woke up guys, thanks for all the feedback.
Well the stock part had a crack in it, so are you suggesting that it came too tight from the factory? I don't think I over-tightened it, but I guess it's possible. Even then, it took the stock part 16 or so years to break, but the new one shat itself immediately. I guess
those guys may have a point then.
The brand is BWD, got it at O'Reilly for $70. It has a "limited lifetime warranty". You think I can convince them it was a defective part and get my money back?