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- - Engine Problem (https://mercedesforum.com/forum/mercedes-e-class-9/engine-problem-2842/)

Ovanin

11-07-2004 09:50 PM

Engine Problem

I own a 1994 E420. 56K miles.
In the past 18 months, after the car sits for 7+ days, it starts fine but after 2-3 miles, begins to misfire, huge power loss and some backfiring.
Brief shut down and the catalytic converters are going snap, crackle & pop. If I then let it sit for 7 hours, it runs fine.
Mechanic says it shows no codes.
Help, please!

sleepwalker

11-07-2004 10:53 PM

RE: Engine Problem

catalyst not blocked?
ignition timing fine?
ignition coil resistance is fine?

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