Hey guys, my dad called and said the water pump failed in his '06 E320 CDI. It's got just under 100,000 miles on it I believe. Sounds like the seal failed then the bearings, the pump locked up and threw the belt.

Anyone heard of this happening? Like is it common or a random mechanical failure? Also, how bit of a pain is it to replace?

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Brian Rogers
'96 E320 traded in at 292,000 miles
'09 C350

Hi Brian,

I can't offer much help but I can say that I haven't seen anyone else post this type of problem on the CDI cars. I'm assuming it's out of warranty because of the mileage..?

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

100k on a 2 year old car?! wow....

I'd just replace the pump, probably a random mechanical failure.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Waterpumps were not built for high mileage. 100k miles is good. The longest I have ever had one last was 60,000 miles.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Thats odd, I replaced mine with 215k on the car, now I am at 277k and its fine still......thats 62k and still going...

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Don't tell my '99 that; its WP is at 252k currently.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

They are sensitive to fan vibration....we bent the fan blade installing the new motor into my dad's 300SD, and the vibration from the fan caused the pump to start leaking from the bearing seals after about 20 minutes of running! Replaced the fan blade and pump and 0 issues since.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Thanks for the input guys! I'll pass the info along. Sure seems like a fluke thing to me. Like Evan, I didn't see any reports of failures on CDIs on the board here.

Yeah, he puts a lot of miles on his cars. Almost all highway miles though, and he maintains his cars very well.

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Brian Rogers
'96 E320 traded in at 292,000 miles
'09 C350

Nor my '99 with 116K. Alternator fine too.

How about alternator mileage replacement, TMAllison? My 300SD would do about 130K per alternator.

My 300SD needed it's 1st WP replacement in the 150K+ range, the 2nd replacement in the 250K+ range.
Sold it at 305K, just when I was getting good at replacing them.
I was getting good at alternator removal & replacement on the 300SD too.

Your 99 and its issues as a garage queen are an anomally IMO.

In its life, other than wear items (brakes/rotors, some bushings, leaky orings, etc), mine has received the following: K40 relay, SOV, one set of GP's, acc belt tensioner, oil level sending unit, one window regulator, and a blower motor regulator.

Everything else on the car is OE.

Has never leaked nor dripped a drop of oil.

*edit* forgot to add one MAF replaced.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)