Question about Ford F-150
Got a 720 code output speed sensor , changed sensor, started truck o/d light flashing idles rough will resetting computer clear this up?
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Posted on Jan 02, 2017
this trucks have very coming problem with the injectors stuck open or close, and some times they just works great and some does not, dealer has an updated injector assembly, i recomend you to install this update and spark plugs and plug wires, if you had replace plugs and wires recently just redo the spark plugs with the injectors
Posted on Jun 15, 2008
I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!
Posted on Oct 06, 2008
Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..
Posted on Nov 23, 2008
Tips for a great answer:
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P0700....Transmission Control System (MIL Request)
P0720....Output Speed Sensor Circuit
hope this helps
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