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-   -   1994 e320 rough idle (http://www.peachparts.com/shopforum/tech-help/381463-1994-e320-rough-idle.html)

stumpedhans 10-17-2016 07:40 AM

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?

Dmitry at Pelican Parts 10-17-2016 06:02 PM

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


-Dmitry

puzzler 10-24-2016 08:22 PM

or your electric throttle..you 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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