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Old 05-17-2004, 02:12 PM   #1 (permalink)
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Date registered: May 2004
Vehicle: 97 E320 130k miles
Location: Boston
Posts: 46
97 E320 Check Engine Electronics light

Anyone have any advice or experience to share. My 1997 E320 w/ 103k miles just had a sputtering engine for around 100 miles or so and then the check engine electronics light came on. I haven't drove it since the light came on and was wondering if anyone has ideas on what to look for when I take it to the shop. The problem started when sitting at a red light I would notice that the rpm's would drop as the car would momentarily sputter. It wasn't a problem when giving it gas or in neutral. The problem then persisted to when driving it would sputter and shake somewhat... It still drives and responds to throttle but has the sputter. After describing to the dealer the "check Engine Electonics" light he said either emmissions or electronics problems. If anyone has any ideas before getting an estimate I'd appreciate the advice. Thanks.
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Old 05-17-2004, 11:33 PM   #2 (permalink)
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RE: 97 E320 Check Engine Electronics light

there is post elsewhere in this forum that shows how to get the climate control unit to initiate a diagnostic and display all error codes the computer finds.

that may help in finding what to replace.
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Old 05-18-2004, 09:38 AM   #3 (permalink)
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Date registered: May 2004
Vehicle: 97 E320 130k miles
Location: Boston
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RE: 97 E320 Check Engine Electronics light

Hi, thanks for the knowledge but I can't find that posting. Anyone know of where I can find this post or how to have the car self diagnose?
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Old 06-24-2004, 10:21 PM   #4 (permalink)
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Vehicle: W210 E55,E320,C240
Location: Boston, MA
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RE: 97 E320 Check Engine Electronics light

Go to autozone - they will read out the codes for you for free. Many local gas stations can also do this. Pretty easy to do if you the right equipment.

On another note, I had the same problem with my 1996 E320 - it would shake more at lower speeds etc. It turned out to be the oxygen sensor - dealer fixed it for a cost of around $550.
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Old 08-16-2004, 02:34 PM   #5 (permalink)
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RE: 97 E320 Check Engine Electronics light

an ODBII scanner costs less than $160 at car parts store.

Usually mechanics charge $80 just to connect their "computer" and get the same error codes.
The only difference is that they may have a better list of what may cause the error.
The oxygen filter for the example of the previous post probably costs less than 200 for both ones, so mechanics can make quite a bang in hours of learning at your cost.
Get a quote from a MB dealer as their mechANICS WOULD TEND TO KNOW MORE ABOUT THE CAR or else try a good german car mechanic with good references from friends in your area.
Let me know if you still need the info on how to use the climate control unit to tell you the error codes and I will go through my file ofnotes for this car.
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