I'm looking for an air diverter valve ; see discussions on them. Has anyone found them yet?

Looking to purchase a new one (air diverter valve GM part #17090215)for 90 Caddy DeVille 4.5 L FWD

Statech- thanks but, no, it is not the right part. What I'm looking for has a whole lot of ports on it, is black, looks like some sort of spaceship, more cylindrical or tube-like than square, . Looking for used or prefferably new. Not even Cadillacs Only has one. GM part 17090215, AC Delco #214-123 SMP #DV84

No, sorry. The AC Delco # is 214-123 The other is Standard Motor Products (or Parts?), But SMP DV84. Sorry for the confusion.

This is a discontinued AC Delco part, also discontinued by SMP, and has been called 'the holy grail' of Caddy parts by noneother than Cadillacs Only in CA.I found one place that says they have 3 of them, but they are unable to find them in their 45,000 square foot warehouse amongst their 32,000 parts bins.I even told them that I would buy all three. Whether they are looking for them, they didn't sound too enthusiastic even though I offered them extra money to look.

Being replaced because it is failing( according to my local Caddy dealer) and, though it does so not instantly, it goes quick; when it does, the car will not operate. It is behind the rear valve cover, on top of the motor, with a handful of hoses and a couple of electrical connects on it. It is impossible to find. Though the dealer had cleared the trouble code, my Service Engine Soon light just came back on today, which means failure is immenent. Once this happens, I'm letting this car go. It won't be possible to fix unless that part can be found. Anybody!

Just was at my mechanic today with code e049. Confirmed it was diverter valve 17090215. Do not panic. This part is an emissions only part. It moves air from intake to exhaust and back. He told me only consequence is worse gas mileage and you will add pollution to air. I am disabled so this is important to me. He guaranteed this will not cause my car to break down and leave me stranded. Anyone else hear different, please jump in and post your info. I spend hours every week looking online, salvage etc. Have ads everywhere no luck, but i'm still driving my 90 eldorado and it drives fine. I don't know who told you it will just die suddenly. What could cause that in respect to this part? I think there is a lot of bad info out there. I should be panicking because I can barely walk. Let's hear from some others with experience on this subject. I also don't want to lose my 68,000 mile mint car. I hope I got right info.

My car is throwing e049 so I had diverter valve physically taken off the car and mechanic confirmed it was one of the solenoids. Air pump is providing air to valve so it is doing it's job, but my original question still is, what makes anyone think a total failure of diverter valve would cause your car to be inoperable and need to be junked? My mechanic who only works on classic cadillacs, did mine because he loves my car, emphatically told me that it will not affect the driveability of the car. It is strictly a part that recycles air to efficiently burn any excess fuel in the exhaust which is why it starts off diverting air to exhaust and then when warmed up, back to intake. Can anyone tell me why or how this will cause your car to die even if failure is imminent as dealer told 1st poster. It does not make sense. None of the answers adressed this. You can live with ses light on. If another problem comes up your dic will inform you with new code. Someone please comment on this aspect. Yes we all want the diverter valve, but it just might not happen. Do we all have to sell our cars for salvage? I for one have invested much of my own time and money to make my car look and run perfectly which it does still with ses light on throwing code 0e49. Let's hear some different answers besides look for the part in junkyards. Is this part absolutely necessary to keep your car running or just an emissions part? This subject is on every forum and is controversial, but there is only one truthful answer. Dealers have no interest in working on your 22 yr. Old car. I called 4 dealers and got that same answer. The part is discontinued so that's the end of the story for them. Unless you have a new escalade where they can throw an overpriced part in and then overcharge you for labor, they want nothing to do with you. That's how they make their money, not keeping old cars running. They can't even diagnose things anymore. They are just parts changers. Since they don't have this part they can't make money. They'd rather tell you to junk your car and buy a newer caddy. Anyone have the definitive answer, is my mechanic right or do you believe the dealer's scare tactics? I am losing sleep over this too, so let's hear some logical explanation of how the failure of this part will cause your car to be terminally inoperative. Sorry for long post, but this is not as simplistic as try to find one in a jnkyard. What if we can't. Thanks