I have a 98 venture. For some time now it will stumble or chug when I
am going at hiway speed - it usually happens when I start to climb a
hill but it hasen't shifted down yet. Once it downshifts it smoothes
out and accelerates fine. It feels like it isn't getting enough gas.
I have had the intake manifold done, the ignition wires changed and
the injectors flushed with little improvement.
I have seen similar problems identified but have never seen a
This can be caused by a secondary ign. misfire like a bad plug, but is only
evident under load such as in o/d pulling a hill, or the trans lock up
clutch in the torque convertor is shuddering/slipping, but this is much less
Computer is fine. When I took it to the dealer they couldn't get it
to stumble (?). They reset the computer anyway but this didn't help.
Fuel filter was changed - a little better for a while (few weeks) then
back to the same.
Problem happens after about 1/2 hour of driving at hiway speed. It is
much more prounced when towing a trailer.
Hi Guys, I don't have an answer, but I have a 97 Venture with the same
Here is what I have replaced so far:
Engine at 89K miles,
Cleaned fuel injectors,
Coil for cylinders 1 & 2,
MAP module for coil,
Transmission checked 3 different times.
Still bucking up hills.
Occasionally I get a code for misfire on cylinder 1,
but this is never reproducable when in the shop.
Mine also is only apparent after about 1/2 hour of run time,
so it is very difficult to find.
I just picked it up from the shop again today,
and I will be driving it from Massachusetts to Delaware.
I'll let you know what I find next.
Good luck with your van,
Needless to say I really HATE mine!!
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