My 1995 SL320 Model 129 with the M104 engine check engine light just came on, how can I find the code that is causing this without taking to a shop that will cost me a couple hundred bucks ? If I can find out what it causing the problem and replace the part it will save me alot of money, thanks to all in advance

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Jerry

2004 SL500 Black 55K Miles
2002 s500 Black 90K Miles
1986 300E Gold 233K Miles
1966 Twin Cessna 320D
1989 Jeep Cherokee 233K Miles
1994 Ford Van E150 399K Miles

Jerry,
Just do a search on a code reader, there are several methods of obtaining the trouble codes. I am not familiar with pre-ODBII cars, but as I understand there is a method of hooking up a light to the connector and counting the blinks to determine the trouble code. ODBII cars have a scanner you plug in and it gives a code number. I have seen several posts on people building ODBI code readers. Good luck.
Brian

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Brian W. Heitman

www.MBCA.org/northtexas

Join MBCA!!!

A 95 SL320 was an early OBDII adoptor and is supposed to be fully compliant - which should mean that you can go to Autozone and have the codes read for free. The connector must be within 3 feet of the driver. It also has a 38 pin connector for blink testing - this is under a little cap on the rear engine compartment, passenger side. You should be able to find more on Arthur Dalton's code reader with a search.

Can I buy a code reader ? where can I buy one and where do I plug it in?

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Jerry

2004 SL500 Black 55K Miles
2002 s500 Black 90K Miles
1986 300E Gold 233K Miles
1966 Twin Cessna 320D
1989 Jeep Cherokee 233K Miles
1994 Ford Van E150 399K Miles

You buy an OBDII code reader for about a hundred dollars or you can build the blink code reader for about ten dollars. Which code reader you get determnes where you plug it in. Have you checked to make sure you have both plugs? Again a search will tell you much about the blink code reader.

The car is OBD1

http://www.autolib.diakom.ru:8000/CARS2/pribor/cs1000/manual/cs1000_mb.pdf


Page 12/13 , in particular...

Thanks for letting me know about the 95 with early ODBII connectors. That is nice to know. I thought it was just 1996 and newer, but I guess MB got a head start. I got my code reader at Pep Boys for 79.00. I don't shop at Autozone because they are not compliant to HRC guidlines.

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Brian W. Heitman

www.MBCA.org/northtexas

Join MBCA!!!

Here is the diagram to build your code reader, I built one last week for my S320. You also need JimF's web page to translate the codes.

http://members.aol.com/ajdalton7/ledtool.jpg

My post on CEL:
http://www.peachparts.com/shopforum/showthread.php?t=141253&highlight=led

Jack

Unhooked battery for a few minutes, reconnected, started up, no check engine light drove for 125 miles on the highway, stopped a few times and restarted, no check engine light WTF ?

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Jerry

2004 SL500 Black 55K Miles
2002 s500 Black 90K Miles
1986 300E Gold 233K Miles
1966 Twin Cessna 320D
1989 Jeep Cherokee 233K Miles
1994 Ford Van E150 399K Miles

It's called " Computer PMS "!

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2007 C 230 Sport.

Take it to Autozone. Its free.

They still do it for free? After all,..... this post is 2 years old.

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2007 C 230 Sport.

Yeah, but that guy doesn't work there anymore.

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A Dalton

I thought I saw his twin-brother flipping burgers at Mc Donalds the other day.

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2007 C 230 Sport.

Yeah, that's him.. "Fries wit dat????"

The Auto Zone guy went to work down at the "Jenny Station"...

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A Dalton