My 1998 Ford Explorer runs rough under hard acceleration

Was the fuel drained out and flushed ? The engine coolant temperature sensor may be bad and reading too low causing an overly rich mixture .

Engine Runs Rough, Stalls, Hesitates on Acceleration, Hard ...

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Ford Probe Engine Runs Rough, Stalls, Hesitates on Acceleration, Hard Starting, Poor Performance. This is a verified problem based on 9 reports. Learn more ...

Starting Problems - 1997 Ford Probe - RepairPal

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Dec 5, 2010 - Starting Problems on 1997 Ford Probe ... If the engine runs rough,stalls, hesitates on acceleration, is hard to start, or has generally poor ...

A new misfire/hesitation on accel. Problem.. - ProbeTalk.com Forums

forums.probetalk.com > Tech Section > 2nd Gen (93-97) V6 2.5L

givit a tune--new distributer cap--new plugs and cables--------also have air intake cleaned plus idle control--use a nonchlorinatd solvent sold a napa etc

Check the oxygen sensor for correct operation as it sounds like you are flooding the engine. The injectors are not getting the correct pulses from the cpu because it cannot correctly read the exhaust gas.

There is about a 90% chance that if you replace your Idle Air Control Solenoid (IAC) your problem will go away. The other 10% could be many other things including a faulty Coolant Temperature Sensor, Mass Airflow or MAP Sensor, etc.

Rough idle is usually a symptom of a vacuum leak especially if the engine runs good at full acceleration. You have 14 year old vehicle, so check all under hood vacuum hoses.

check for vacuum leak, look for dry rotten hoses or anything like that.

Try running some fuel injector cleaner through your fuel tank. What you may have are a couple of plugged or missfiring fuel injectors. I would suggest checking all of your wiring to your injectors to insure good connection, replace your fuel filter and check for vacuum leaks.

no problem. If you are getting that low of voltage on a load then you might want to test the alternator as well to make sure it is running at capacity.

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