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Acceleration problems
Hey everyone,
2002 4runner seems to drive fine around town, until you accelerate onto the highway. At about 50 mph, car starts to shake and shudder. However, if you floor the gas pedal, it will work right through the problem. Check engine lt. finally came on a couple of weeks ago, and I took it to the same mechanic, but he told me the code read: random misfire, I guess from me flooring it. He told me it could possibly be dirty injectors, so I've put the cleaner in a couple of times; I even put in a full bottle at a 1/4 tank and ran it until almost empty, but still have the same problem. I had close to the same problem about 6 mnths ago, and the check engine lt came on, and the mechanic told me I had to replace one of the coil packs. Replaced and problem went away until now. Starting to get nervous after reading some threads on different boards about people describing the same problem, and mechanics fixing the problem, only to have the same symptoms pop up a couple of mnths later.
Thanks for any input.
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