Urgent Need help badly
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Elder User
Joined: Jun 2010
Posts: 854
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From: Salisbury NC
Urgent Need help badly
Ok im lost went out and cranked my truck just now and everything looked normal but then i saw the tack at 0 when it should be at 1100 for the high idle. I checked all the fuses guys i need your help bad i got no clue thanks. Tacks still remained still when i pulled it in the shop to try and fix with your help.
Senior User
Joined: Aug 2010
Posts: 399
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From: Central, Florida
Sounds like your tach sensor may have crapped out.....if you have an E4OD try not to drive it until you get it fixed.....the tach sensor not throwing a signal will cause your trans to go into limp mode.
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Elder User
Joined: Jun 2010
Posts: 854
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From: Salisbury NC
Oh great now no wait to start on the display and the volt gauge is not regestiring anything sits there and dont move would the sensor cause the other to
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Senior User
Joined: Feb 2010
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no it would not you have electrical problem i would check your fuses with test light sometimes they can look ok but are not.
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A dead tach sender should/would send the automatic (E4OD) trans into a "failure management mode" (limp mode) with harsh engagements and firm shift feel and an abnormal shift schedule. It has no effect on a manual trans only the Tach readings.
Check the wires where they exit the big nut on the oil filler housing , known to short out due to bare wire.....
Replace the tach sender on the oil fill housing a big 1" nut with 2 wires. Ford only part Engine RPM sensor E5TZ-17B384-A about $50. You can remove and clean it but usually changed later too.
You can test it too, hold it in the air away from ferrous metal, using an ohm meter lead on each wire you need DC resistance between 2000-3000 ohms.
You could cut the wire and slide a suitable sized piece of heat shrink over the bare wire(s) to isolate them from each other.
Check the wires where they exit the big nut on the oil filler housing , known to short out due to bare wire.....
Replace the tach sender on the oil fill housing a big 1" nut with 2 wires. Ford only part Engine RPM sensor E5TZ-17B384-A about $50. You can remove and clean it but usually changed later too.
You can test it too, hold it in the air away from ferrous metal, using an ohm meter lead on each wire you need DC resistance between 2000-3000 ohms.
You could cut the wire and slide a suitable sized piece of heat shrink over the bare wire(s) to isolate them from each other.
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Joined: Dec 2009
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From: Hagerstown, Md
Ok im lost went out and cranked my truck just now and everything looked normal but then i saw the tack at 0 when it should be at 1100 for the high idle. I checked all the fuses guys i need your help bad i got no clue thanks. Tacks still remained still when i pulled it in the shop to try and fix with your help.
Also you say your high idle is 1100? Is that what it is supposed to be? Mine only gets about 800
