740 boggs down....intermittently

  • Thread starter Thread starter Tammy
  • Start date Start date
T

Tammy

Hello,
I am having an occasional problem with my 1990 740 Turbo wagon.

I was driving for about 15 minutes when the car started to bog down
when I pushed the throttle. As long as the throttle was only slightly
open, the car would run, but when I tried to accelerate, it would bog
and the engine would start to "miss" and almost stall. I put the car
in neutral while coasting and was able to rev the engine as long as I
barely opened the throttle. Once again the engine would miss and
almost die when I tried to rev the engine quickly in neutral. The
further I drove, the worse it got. At first I could not go over 2500
rpm without it bogging down, then I could maintain 2000 rpm, then 1500
then..... it would only run when idling. As soon as I would hit the
accelerator, it would almost stall, however, I could quickly release
the throtle and it would return to idling. The problem continued to
worsen until the car finally stalled on its own. However, here is the
interesting part: after the car stalled, I started the engine again
and it worked fine!!? It has now been running perfectly for a couple
of days.

This is the second time my car has done this. I have checked the
computer trouble codes, but it flashes 1-1-1 (everything normal). It
is hard to troubleshoot further until it starts acting up again, so I
don't even know where to look.

Has anyone ever enocounterd this problem before? I would be greatful
for any advice.

Thanks,
Tammy
 
Clogged Fuel Filter
Had
79 245 D,
81 240 D,
86 240 320,000mi and running fine when traded
94 944 Green 257,503 mi CRUNCH Parted out
Have
94 944 White 149,000 The New one
94 944 Maroon 135,000 mi
 
Yes. I'd have to say it has something to do with the fuel system. In tank
pump filter, the other pumps filter.
 
I have similar problems with my '89 240 wagon... found that if I shut the
engine off, then remove and reattach the connector to the Air Mass Meter
several times (to clean the contacts) it does fine for months before it
repeats... might be worth a try!

m9876c at yahoo dot com
 
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