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#1
12-05-2003, 09:34 AM
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New behavior at start-up..W124
I have never had this happen to me in this car before. 93' 300E.
Here in Atlanta it just started getting cold, about low and mid 30's yesterday. At startup, I always turn the key to the accessory postion for a few seconds, let fuel pumps engage, then crank engine. Upon doing so, i got a little resistance, as if the battery were low on cranking amps, it may be, then when car started, it immediately revved up to maybe 2,200+ rpm's briefly, then settled into its idle warm up mode. Did it yesterday morning, evening, and this morning. Other than that, everything else is fine. What should I look at? -battery cranking power -starter -some sort of idle issue -fuel pumps FQ Just wondering if it is the start of something.
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FAQ W124 Sportline Swaybars Bilstein HD Struts 16" E420 wheels 
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#2
12-05-2003, 12:19 PM
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sounds like your battery is dying. My (now sold) E320 acted the same way until I replaced the battery.
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#4
12-05-2003, 12:57 PM
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03/95-2 M104 WITH HFM INJECTION SYSTEM
In case of customer complaints of high idle (approximately >2200 rpm) for a very short period of time (< 1 second) immediately after cold start, an updated EA/Idle control unit is available from our PDCs. The updated control units can be identified by a software production date of "SW 43/94" and higher stamped on the housing in the area of the barcode label. The following control unit part numbers are affected: Electronic Accelerator Control Units Part No. 124 545 65 32 - E320 129 545 05 32 - SL320 140 545 49 32 - S320 202 545 01 32 - C280 Idle Control Units Part No. 124 545 55 32 - E320 129 545 19 32 - SL320 140 545 52 32 - S320 202 545 43 32 - C280
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Zafar 94 E320 58000 Miles
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#5
12-05-2003, 01:57 PM
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Zafar,
That is exactly my symptoms. So where do I locate the housing with the barcode label? Do both parts get replaced? EA/IU Or are they independent? What else do these parts do? Is it an immediate fix i should do? Any help is appreciated. Thanks FQ
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FAQ W124 Sportline Swaybars Bilstein HD Struts 16" E420 wheels
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