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Old 10-17-2016, 08:40 AM
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Join Date: Oct 2014
Posts: 7
1994 e320 rough idle

Hey, The old car has been running great until last week after a 500 mile trip 2 days later started up and now has a very rough and low (500) rpm, kinda hesitates when excellerating from a stop. got home ok ,another 500 miles still no check engine light. Could it be the MAF sensor?

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Old 10-17-2016, 07:02 PM
Join Date: Mar 2016
Location: Los Angeles, CA
Posts: 1,903
Check out the tech article below; hopefully it'll help you troubleshoot the idle issue.

Mercedes-Benz W124 MAF Sensor Replacement | 1986-1995 E-Class | Pelican Parts DIY Maintenance Article

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Old 10-24-2016, 09:22 PM
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Join Date: Oct 2016
Posts: 199
or your electric want to check if its been upgraded and has clean wiring and also could be the OVP relay which will cause this..low fuel pressure or...the pumps/filters which cause low fuel pressure..This car tends to hunt a bit for idle speed..will come and go at times steady and other times a bit lumpy..But should not be rough

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