96 Ford Explorer is studdering (misfiring) when going up hill and feels like it is losing power on hills. Also, has a misfire when idling. Seems to be drinking gas with this problem. Spark plugs, wires are new. Problems are not as bad with Shell gas but acts up more with other gasolines. We have changed 4 or 5 sensors, cleaned intake, cleaned throddle body. Thanks
I have the same exact problem that just started immediately AFTER I got a tranny service where they changed the Trans Fluid, Trans Filter, Fuel Filter. Took it back and they say nothing is wrong with it. Took it to the dealer thinking I could get some REAL answers... they just told me to replace spark plugs, wiring & coil, for $900. Only studders when quickly accelerating above 40mph. I've check other forums, they say to clean the Mass Air Flow sensor. Haven't tried it yet. This seems the easiest before replacing spark plugs. Any other suggestions anyone?? Please.....
Sounds like a bad coil ?
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