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190E 2.6 - no power AND electrical problem?

1669 Views 3 Replies 3 Participants Last post by  Kiwi_bloke
My 1991 190E 2.6L started having a serious acceleration problem this afternoon... from stop lights, when I started moving forward again I found that the car was really hesitating, almost no power at all... and would then suddenly kick in and start accelerating. This happened several times over the course of a 20 minute drive... and just as I was getting near home, as I tried to accelerate from a stop sign, it sputtered and almost stalled.

I then noticed that the radio wasn't working... wouldn't turn on at all. And the interior lights aren't working either.

This morning, on an earlier trip a few hours before, the radio and lights were fine, as was the acceleration... so it seems that the electrical problem, and the acceleration problem are either related, or it's a really odd coincidence of timing.

Any ideas of what I should be looking for to fix this?

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Several things at once...

Well, there was indeed a blown fuse (don't know how I missed it when I first looked)... replacing it fixed the radio and interior lights... but did nothing for the acceleration problem.

Drove it a bit this morning, and it seemed fine... at first. After a few miles, the acceleration problem started again... so, since I was in the area, I took it to my mechanic to have him take a quick look. We decided to start with the fuel filter - turned out it was almost completely clogged. So, we thought we had nailed it... I drove off and it seemed fine... for a few miles, then the problem resurfaced so I turned around.

After a little more testing and tinkering, we think we found a slight leak in one of the air control hoses (I think that's what it was, can't remember the exact name of it right now). Anyway, it was appearing to be a lean misfire problem, and spraying a bit of quickstart around that hose resulted in a brief increase in idle RPM. So, now I have to wait for him to get the hose and install it... we're hoping that'll do it... since the fuel pumps seem to be operating fine. My fingers are crossed.

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