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Pre-facelift Monovalve

Kyiv

1993 400E | Azov мой кумир!
Member
It seems that pre-facelift heater control valve (monovalve) #001-830-20-84 has been discontinued. Various MB dealers' webstores show it as NLA. FCPeuro still has it listed and I got mine delivered today. Might be a good idea to stock up for people with roughly halfway through USA 1994 model year cars

 
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Gaaaa. For the sake of Pete...! What is up with the NLA flood? :banger:

FYI, the change from early style (001-830-20-84) to late style (001-830-25-84) monovalve is by VIN break, and the EPC VIN break is wrong. You MUST physically inspect your car to determine which type you have. The change occurred roughly halfway through USA 1994 model year production. The late monovalve is crazy priced at $470 MSRP, $350 Naperville, and is a dealer-only part... and is 034/036 specific.

:runexe:
 
It seems that pre-facelift heater control valve (monovalve) #001-830-20-84 has been discontinued. Various MB dealers' webstores show it as NLA. FCPeuro still has it listed and I got mine delivered today. Might be a good idea to stock up for people with roughly halfway through USA 1994 model year cars


Thanks @kiev, I got one as well. I ordered it from FCP Euro, which is on the East Coast, and, interestingly enough, I got it in 2 days ---- dropped shipped to me in California from a local CA dealer that is no more than 45 minutes away from me.
 
Thanks @kiev, I got one as well. I ordered it from FCP Euro, which is on the East Coast, and, interestingly enough, I got it in 2 days ---- dropped shipped to me in California from a local CA dealer that is no more than 45 minutes away from me.
Jlaa, did the part ship from the dealer, or from WorldPac? The box may have been labeled as coming from the dealer, but it was likely sold from the dealer to the WorldPac warehouse (where it sat, unsold, for a long time until FCP dumped the inventory). Looks like it is now OOS everywhere. Thankfully the monos have a very, very rare low failure rate.

😿
 
Jlaa, did the part ship from the dealer, or from WorldPac? The box may have been labeled as coming from the dealer, but it was likely sold from the dealer to the WorldPac warehouse (where it sat, unsold, for a long time until FCP dumped the inventory). Looks like it is now OOS everywhere. Thankfully the monos have a very, very rare low failure rate.

😿
Good catch. The box, which looked super old, had "Mercedes Benz of Walnut Creek" all over it, but the UPS tracking page showed the sender as WORLDPAC, and it shipped from Hayward, which is close to Walnut Creek but not the same.

So I'm just now learning a bit about how this industry works ---- Do dealers sell excess inventory to Worldpac for dimes on the dollar? Worldpac I am assuming has more reach/exposure to potential buyers than any individual dealer would...?

When I worked in consumer electronics some time ago, we, as a manufacturer, would dump excess inventory to folks like Tiger Direct for dimes on the dollar so that we could get SOMETHING for the inventory instead of having to write it off.
 
Woldpac stocks some OE/dealer parts, for either items that are not available from aftermarket sources, OR for parts where there is enough demand for them to stock the OE Genuine part alongside aftermarket. So, Worldpac buys from a dealer at deep discount (think below Naperville pricing). This is why you see some, but only some, Genuine MB parts on FCP's website. But when Worldpac has something sit on the shelf long enough, they just want to dump it, and will drop the price to firesale levels.

Some sites may list most of the MB part catalog as "Special order", priced around list/MSRP, then when an order is placed they buy from a dealer at discount, and re-ship (or drop-ship) to the customer. I think Pelican does this? Downside is, they often show NLA stuff on their site until someone tries to buy it, then the order is cancelled, then hopefully they update the site to show it as NLA.

:matrix:
 
Thanks. So in this case, as of right now, Worldpac shows nothing:

1574437776538.png

But FCPEuro show available:

1574437821630.png

I wonder if it is still available or if it is truly gone.
 
I thought FCP showed OOS yesterday? You'd have to either call and ask, or place an order and see if it's cancelled. Could be they found another one or two laying around a different warehouse. But with MB being NLA, once the dusty old boxes are gone, they aren't going to get any more (until MB commissions URO for a new production run at $7.99 MSRP.)

:hide1:
 
Worldpac, IMC and the other major parts distribution houses increasingly carry less and less actual MB parts in their inventories. Back in the old days (10 years ago and before) they used to carry significant REAL MB parts inventory, because they were able to get it for good prices and actually make money on it.

In recent years, MB has largely shut down the channels for their own parts, so that more and more MB factory parts are sold through MB dealer channels. This is the result of MB's effort to make their parts business more profitable and to steer more parts revenue through their own channels, and to shut down the aftermarket.

The parts distributors have been massively selling off NOS MB parts over the past 10 years, particularly stuff that doesn't move quickly. This is because it costs them massive amounts of money to stock stuff that may sell one part every year or 5 years. They'd rather stock stuff that they can buy and move quickly, resulting in booked revenue and turnover. And the fact that the margins on these companies' businesses has been shrinking for the past 20 years, so they need cash, and lots of it, to keep operating.

My friend Robert Fenton has been capitalizing on this shedding of inventory from the major distributors for many years, and this is a major source as to how he has acquired his Bay Area warehouse of MB NOS parts. For example, IMC would call him up and say, "Hey, we have 50 fuel pumps for Pagodas on hand, and we want to get rid of them ASAP." Robert would negotiate a price that would be perhaps 60-80% off the wholesale price, and then buy their entire stock of the fuel pumps in one shot. Then he can turn around and sell them, say for wholesale or dealer list, or higher to someone who is DESPERATE for these NLA pumps, and still make a HUGE profit on them. It's pure genius, but of course you have to have the cash on hand to buy these parts in bulk when they come up. And then the connections to sell them.

If the parts distributors ARE selling MB parts, it's as the @gsxr says, they custom-order them from MB at a slightly-under-wholesale cost (not much less than WE pay for them), and then sell them to the public at a slightly discounted price from list. It's why you see AutohauZ selling a $20.00 MB part for $19.00 ("see, we offer a great discount off of factory list!!!), when we can order that same part for 26% off of factory price plus free shipping.

When it comes to aftermakret / OEM parts, like a Lemforder or something, the game is completely different. Here, they can discount the crap out of things, because they get these OEM parts at good prices. Sometimes, as we have found, these aftermarket parts are the actual MB parts witih the stars ground off. Other times, they are the "discount" aftermarket versions of these parts, as is often the case with things like the TRW front LCAs for the 124 -- inferior quality parts from the get-go, as compared to the "professional" line of parts they supply to MB at a significantly higher price.

These parts distributors do the very best - and make the most bucks - on parts like URO and Febi and Meyle. They sell these parts to uneducated buyers and/or independent repair shops who don't mind shafting their customers and foisting crappy parts upon them. The better shops (with scruples) WILL NOT sell their customers these crap parts. But in these cases, often Meyle and Febi parts are "good enough" to install on customers' vehicles, and work at least for a year or three until they fail -- enough time so that the customer either gets rid of the car or enough time has gone by that the shop can say "Hey, it's not our fault, the part worked for two years !!"

The VERY WORST shops are those who resell crap (Meyle, Uro, Febi, Trucktec, etc.) parts to their customers for FULL MB RETAIL PRICES. That is just pure, unmitigated GREED.

And these cheap Chinese parts are a gold mine for the distributors, too! They buy a URO upper strut mount (MB part number 124 320 14 44) for $2.50 apiece, and sell it to a shop for $7.50. Bazinga!! They just made 200% beyond what they paid for the part. Pure gold !!

Then the shop or distributor turns around and sells the URO strut mount to a customer for $15 a pop, retail. Bazinga!! The shop/retailer just doubled their money on that part -- 100% profit !! If they are unscrupulous, the shop will do the following:

  • Buys the URO part for $7.50. (Note, the MB list price for the part is $87.00)
  • Sell the part to the customer for $65.00, loudly showing the customer the list price of $87, and the uninformed customer sees the $22 off of the list price and thinks the independent shop is a GREAT GUY for giving them such a major discount on the part)
  • Bazinga !! The shop just made a total of $57.50 (times two strut mounts....$115!) PURE PROFIT on a part that only cost them $7.50.
Do the math. It can get pretty lucrative for a shop selling Harbor Fright parts this way -- or at least help them keep the lights on and pay their mechanics.

I've also seen numerous cases where independent shops will sell their better customers good (OE MB or good OEM) parts, and will sell their unknown or low-end customers the crap parts. Sort of a bifurcated strategy depending on the customer profile and tolerance for having things done (fixed and out) vs. done RIGHT (a customer worth keeping for the long term).

Seems to me like customer discrimination and profiling....isn't that illegal in the state of California?

Cheers,
Gerry
 
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Very interesting how this works. Dave and Gerry, thanks for sharing.

My heater control valve also arrived in an weathered looking MB box. Next to a large barcode it says 07 - 04. Wonder if that is when it was made?

IMG_20191122_125410.jpg
 
Very interesting how this works. Dave and Gerry, thanks for sharing. My heater control valve also arrived in an weathered looking MB box. Next to a large barcode it says 07 - 04. Wonder if that is when it was made?
The top of your box label, the part with the blue MB logo, normally has a date on it (dd/mm/yy) which indicates when the label was printed... but the part in the box could be even older.

:wheelchair:
 
Found it. Say 17.03.2015. At a minimum then, this part has been laying around for more than 4.5 years.
 
One additional note:

Since the W210 and newer cars, there has always been much fewer parts ever offered as OEM/aftermarket parts. Meaning that "factory" / OE parts were and always have been the only way to go.

Many more parts were available on the aftermarket for the older cars 201, 124, 126, 107, 123, etc. The OEMs were tooled up and able to make parts at the time and since for the aftermarket. For the newer cars, MB squeezed the OE suppliers so that they could not offer the parts on the aftermarket as a condition of being an OE supplier to MB. This was part of the squeeze they put on starting about 10 years ago.

Not to mention that assemblies and sub-assemblies are MUCH more modularized in modern-era Benzes, so fewer indvidual components are available as replacements, even from MB. You have to buy the whole assembly or nothing. For the older cars, you could buy the individual components as well as larger assemblies for many things.
 
I replaced the mono valve in my 400E back in the spring and it came in a box which looked like it had been sitting on a shelf for a very long time. Glad I got it when I did.
 
Hi there gentlemans, I have an issue with my AC, now with over 100F here in IL it’s definitely not a fun drive. It only blows hot air, even if you turn everything off everything is hot around the vents and footwell area. If you turn it on it will only blow a little of cold air from the center vents (not the entire center vents are blowing cold I would say about 75% of them are blowing cold the rest is hot, and this is with AC fully on), the other vents are blowing hot as hell.

Is it this monovalve that’s causing my struggle?

My Car is a 1994MY.
 

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You’ll have to do a little diagnosing to get to the bottom on what is going on. I’d start with the wiring diagrams available on this site, and take a look at how the PBU and the monovalve work together to provide heat in the cabin.

Bottom line, the monovalve is just a solenoid that is controlled by the PBU. The futher its open, the more hot coolant flow you get into the heater core, and the more heat you get into the cabin. Any of the components in the system (PBU, wiring, or the monovalve) could be at fault. A good guess would certainly lead you to suspect the monovalve first, but only troubleshooting the system will remove you from just firing the parts cannon.

Sorry that info isn’t more immediately helpful.

PS- your facelift car will may use a different mono valve than the one originally called out in this post. [Admin edit: See post #2.]
 
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