tach trouble
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More Turbo
Joined: Dec 2003
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tach trouble
Ok, my E4OD problems I beleive to be from the tach.It doesn't work at idle but as soon as you start to rev the engine,it starts working.The tach works going through the gears and going down the highway but when it gets to 1000rpm when slowing down,it just drops to 0.The OD light on the shifter starts flashing and if you are just cruising around 30-35mph,it shifts up and down constantly.If you turn off OD,it does OK and just running through the gears and going down the road,it is fine.What kind of power should I have at the sendor and where do I get one if that is the problem?I couldn't find a listing for the tach sendor on rockauto.
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Joined: Jan 2010
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From: dirty jerzy
is there arelay?, my tach ,doesn't work either, and i changed that sensor 1990 7.3? if so where is it? i followed the wires back,they went to a motorcraft regulator, short circit protector , part # on the unit is (fopu-10316-aa) . could that be my problem. thank you
2020 if i get mine working, i post what i did
2020 if i get mine working, i post what i did
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More Turbo
Joined: Dec 2003
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Thanks for all the replies.My tach works as soon as you press on the throttle,at idle it just drops to 0.The OD light starts flashing when the tach drops all the way when you are slowing down.I haven't found a listing at NAPA,Autozone or Rockauto for the tach sensor.
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Joined: Feb 2010
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Spare Part #
Hi at all,
I bought a 1992 F250 7.3 IDI with E40D just last Friday. I have exactly the same symptoms as 2020 mentioned.
I've scanned the computer and got two codes:
23 and 14
14 says:
Ignition pickup (PIP) was erratic - Ignition Systems E4OD Transmission diesel RPM sensor - Diesel RPM sensor
23 says: Throttle sensor out of range or throttle set too high - TPS
those information i got from Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical
I understand that the tacho sensor need to be replaced but my question is can i adjust the throttle sensor or needs it replaced too?
I read that this parts are ford only.
Does anybody can provide the original current Ford part # for it?
Many thanks
I bought a 1992 F250 7.3 IDI with E40D just last Friday. I have exactly the same symptoms as 2020 mentioned.
I've scanned the computer and got two codes:
23 and 14
14 says:
Ignition pickup (PIP) was erratic - Ignition Systems E4OD Transmission diesel RPM sensor - Diesel RPM sensor
23 says: Throttle sensor out of range or throttle set too high - TPS
those information i got from Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical
I understand that the tacho sensor need to be replaced but my question is can i adjust the throttle sensor or needs it replaced too?
I read that this parts are ford only.
Does anybody can provide the original current Ford part # for it?
Many thanks
New User
Joined: Feb 2010
Posts: 3
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thank you for this tip.
One problem less. I'll try to read the computer tomorrow again.So than i just ask for the part # of the tacho sensor.
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More Turbo
Joined: Dec 2003
Posts: 510
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I took the sensor out and cleaned it good.The wires and insulation looked OK so I put it back in and found the connector at the left fender,unplugged it and made sure it was clean and tight.So far the tach is working and the OD light is staying off.