In reference to my previous post about fuel/air issues on my '98 E300 the pocket code scanner arrived yesterday @ 5pm,read the booklet,hooked it up and scrolled down,here is what I found:

PO243 Turbo/sup wastegate solenoid A malfunction. I gather that's the dirty,oily component I mentioned that hangs under the air filter?

PO100 Maf or VAF A circuit malfunction, Bad MAF sensor like you guys said?

So whaddya think?

This code scanner,for $55.00 how could anyone NOT afford to have one?

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If you have not ordered yet, this might be worth additional investigation. Thanks for the updates.

http://www.peachparts.com/shopforum/showthread.php?t=105816&highlight=e300td

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raMBow

1999 E300DT Obsydian Black Metallic, Heated Full Leather Parchment options, E2, K2, 136,000+, best 36.5 mpg - GP's 12-04 & 11-12 Zero Stuck
2010 Honda Odyssey - The BrideMobile - best 26.5
(2) 2005 Honday Accord- (1 -Corporate 1 - Personal) - 110,000 4-cyl 30mpg
2000 VW Golf GLS TDI, Upsolute Chip (sold to Brother, now 300+k on it) 48.5 mpg like clock work
1987 Honda CRX HF - Sold 87,000 always over 50 mpg Max 67 mpg

On my 99 E300 I was told to replace my MAF when PO100 popped up. At that time on some cold starts the MAF operated properly and turbo power was available, on others starts it would malfunction and loss of power was such it was difficult to drive.

I dont know about your second code. Hopefully it is a malfuntion at the turbo caused by the malfunctioning MAF?

The scanners are handy, but, can be very misleading at times to those of us who are diasnostically challenged.

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Terry Allison
N. Calif. & Boca Chica, Panama

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

If yours MAF is the original you have been blessed. Mine went at 54,000 miles.

By the way where did you get a code reader for $55? It is OBDII, correct?

Manhattan Man- Sounds to me like you possess the Rosetta Stone of Mercedes Benz. Instead the DaVinci codes we now have the Manhattan Codes.

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"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

Well now, here's the one. The accompanying booklet shows you the fault codes that correspond to the numbers,clears the codes in the vehicle as well,so easy my 7 year old scrolled it down and read it out to me.

I've been following posts regarding your own E300 where you are,justifiably,madder than a wet hen.

Same symptoms as yours. I ordered a new MAF sensor assembly and pre-filter,we'll see if the wastegate solenoid will function on it's own with the new part.

http://www.amazon.com/gp/product/B0007LEG2K/sr=1-3/qid=1155318566/ref=sr_1_3/002-8987202-6744005?ie=UTF8&s=automotive

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Well,hardly.

But thanks loads for the ego boost,while I can do anything on prewar cars I'm still learning about these "modren"electronics.
And yes,2 Manhattans straight up and I'm thinking clearly.

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Speaking of which, my car is 1990 and hope it's the last car I'll ever have to own but when did Mercedes really start heaping on the electronic gizmos?

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"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

As the '90's progressed.
It can be gauged from the fact that this OBD II scanner is for,I believe,'96 and up.

Which is not saying you should be frightened of these electronics,at least the scanner very much simplifies do it yourself diagnostics to a degree that gives the confidence to learn more.

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If I only had a garage......for the time being I am adding to my mechanics retirement fund.

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"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

Thanks for the source. Here I thought that Amazon was just music, books, and videos.

I am not so angered by my E300 anymore. It is now just an object of great dissapointment. After owning my 1985 300D for a while I thought that all Mercedes would be at least as good as a W123. We found our E300 that literally looked brand new when we saw it. I bought it for my wife to drive. Today she looks at cars ads for something else. Perhaps we have both been spoiled as both of us were formerly GM drivers with very, very few issues outside of regular maintenance. I would like to think that purchasing a preowned E320CDI in a year or two would be a nice car, but now I am waiting for Honda to get the Accord diesel here for 2008.