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My '91 $$$$4 automatic is stumbling like crazy till I get RPMs high and get it moving. It has dropped to a very rough (4 cyl?) mode intermittently at warm stoplight idles for a few months and yesterday just didn't want to run til I floored it, slammed it into gear and forced it to move. Once I got it rolling and ran it in third gear it cleared up........until I turned it off and came back a few hours later to drive again. Could it be a clogged fuel filter or am I looking at pump(s) or worse yet, MAF or LH? The plugs, wires, and caps are new and the intake has been refreshed with all new sensors, etc, by Davek9, about 6 months ago.
My mechanical abilities are only a decimal point above electrical (which is -.9) and Dave is 100 miles away so unless I get get it to him, I may be forced to have someone else look at it and I would rather give me a fighting chance of him finding the problem quicker than dicking around for days. Appreciate some help.
Be careful. If your problem is a failing ignition module (running on 4 cyl). Flogging the car can cause a FIRE. Don't run it hard to try and fix it. In fact don't run it at all until you determine whats going on.
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