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  #31  
Old 09-29-2008, 10:33 AM
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Join Date: May 2007
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I just ordered the eprom from Jim. I will post back after install. Thank you all for your help.

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  #32  
Old 09-29-2008, 10:46 AM
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Join Date: Aug 1999
Location: Florida / N.H.
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Good. That will give you more % and as an engine and parts wear, the adaptations required go up anyway..so it is not a waste.

..and if you get a returning code, then you know you have a system failure for sure.
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  #33  
Old 09-29-2008, 11:31 AM
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'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
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Ok, received your order and it's one the way . . .

Comes w/ a detailed instructions to install and the original MB TSB issued in '96. I always laugh when I read it b/c they waited until the car(s) was out-of-warranty before issuing the TSB.

Many cars have had the problem for model years '92 thru '94 so if you didn't report the problem, you were out-of-luck as far as having it fixed under warranty. Most didn't so they ponied up for a new module, around $2K!

BTW, I'm from "Rochester". . . my home town. Went to school and moved in '69 to So Cal.
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  #34  
Old 09-29-2008, 12:57 PM
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I got the car from my father who bought it used at 89000 miles. The car had 122000 miles when I got it. As Jim would know, snow + rear wheel drive is not the best even with snow tires. So my father finally decided to get an SUV when she developed the ETA problem.

I needed a used car for my wife to learn how to drive on so I got a free car. Well almost free. I had to fix the ETA which was quite expensive. Currently 145000 miles and still counting. The engine and the tranny are strong. I hope to keep her until 200000 miles then see how she is holding up.

Thanks to this forum most of the repairs have been parts only otherwise she would have been junked long ago. The dealer here wanted $7000 to fix the ETA problem when $1800 (I decided to get a new one instead of a rebuilt one) fixed it. Thank you all.
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  #35  
Old 09-29-2008, 01:12 PM
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'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
You are entirely welcome . . .

I remember Rochester's winters. . . my 'stud' tires on my first new car, 1960 Bonneville. . . and how it used to eat the bottom/fender wells of all cars . . .
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  #36  
Old 10-03-2008, 01:37 PM
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It has been 2 days since the eprom install and code 19 has NOT returned. I believe the problem is solved. Thanks to Jim and all of you who has helped.
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  #37  
Old 10-03-2008, 06:10 PM
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'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Yes, and it won't return . . so just drive it and at those Rochester winters!

If you find (or acquire) a scanner such as the AST Retreiver (or equivalent), then you can read the S/A numbers directly and see how it's trending.

When mine tripped the limits at 0.85 (limits are +/- 15%), I replaced the eprom and it continued to trend downward. The new eprom has limits of +/- 32%, meaning it won't trip again until 0.68 is exceeded. That probably will never happen.

If I remember correctly it got to about 0.83 and I replaced the MAF and O2 sensor (b/c I got them almost new very little $$). The S/A was reset and after checking every month or two, the S/A was just on the "good" size reading 0.88. It has continued to rise to it's present value of 0.92 or so. And that's where it stayed.

Steve Brotherton (stevebfl) tried some experiments placing a 600 ohm resistor in the line which immediately changes the "precentage" and it raised the S/A to the "good" side of 0.85. He may comment if he read this.

But this is a nice fix and if you feel "rich" (or get a MAF and O2 cheaply), you might try replacing them. With new parts, it's a very expensive "fix" if it even works.
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  #38  
Old 10-06-2008, 11:38 AM
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I am content with I have. No code so far and I am happy. Thank you all.

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