I recently acquired a 02 Grand Cherokee Laredo w/ 4.7 V8 as a dead vehicle. Had to replace the crankshaft due to spun rod bearing and replace a missing cam and a couple sensors... Anyway, the engine runs like a champ now. SO... test drive: Feeling things out paying attention to sounds, going easy on throttle (Don't want to break my engine already ;-P ) everything seems to be ok. Get out on the highway, try some brisk acceleration. Engine revs nicely, sounds like it should, shift points are a little higher, but hits all gears to 60mph. Next test is WOT accel from 60 to 80-90. Floor the gas, trans drops to 2nd, engine won't rev past 4 grand and speed drops abruptly to 55. Let off gas a bit and shift to 3rd and will accelerate, slowly to 70,,, And grades over 2% can't hold speed at all.
Changed fluid and replaced both filters with Oreilly's brand. Fluid is not burnt.
Thanks,
Joe B
Changed fluid and replaced both filters with Oreilly's brand. Fluid is not burnt.
Thanks,
Joe B