Question about 2002 Mitsubishi Diamante
Suddenly dureing accel the engine lost power,no tourqe then bogs down and stalls.will restart fine and idles well but problem reacurres.note has 150,000 miles
I would start with a complete tune up and a motor flush to rid the block of any sludge. after that, i would change the fuel filter and pump as well. it wouldn't hurt to reset the valves. this will help dramatically. due to the miles, this will give you sometime to save up for a re haul on the piston rings and valve springs and head gaskets.
Posted on Mar 12, 2009
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Posted on Jan 02, 2017
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Here are the common cause of surges, stalls at stops, slow idle speed, erratic idle, it is in most cases the idle speed control air-bypass valve and/or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving
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