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Old 12-18-2009, 02:58 AM
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Join Date: Oct 2004
Posts: 25
190e 2.3 bogs and stumbles

I have a '92 190e. From a cold start the car will often run poorly for the first 2-3 minutes. It will struggle to get to 30 mph. After this spell, it runs better, though it has a mild miss at idle (once a second or so), and bogs if you press the gas past 1/2 throttle. Keep it below 1/2 and it performs ok, though doesnt get over 25 mpg.

Ive seafoamed, changed the plugs, and fuel filter.

What could cause this? EGR? Smog pump?

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Old 12-19-2009, 12:48 PM
mak mak is offline
Join Date: Jul 2006
Location: Westfeld .
Posts: 687
first thing to check is the OVP relay with the fuse . this powers the cold start relay The relay solder goes bad with age .best to replace this as well as the fuel pump relay both age related soldering faults .

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