Another OD Question
Thread Starter
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Senior User
Joined: Jul 2010
Posts: 170
Likes: 0
From: Western SD
Another OD Question
am getting ready to buy a 94 f250. When I test drove it, the Od light flashed when stopped (dealer said it meant OD was off because we wern't moving - sure!) After searching I noticed all the posts about sensors.
Data:
7.3 turbo
174,000 miles
No light flash while moving.
Trans shifts normal
Light on at idle
At idle, tach reasd zero
Fluid is clean (may have been changed by dealer)
Question: Since there are no other problems but the tach, is it safe to assume the tach sensor sends inputs to the computer causing the light?
Data:
7.3 turbo
174,000 miles
No light flash while moving.
Trans shifts normal
Light on at idle
At idle, tach reasd zero
Fluid is clean (may have been changed by dealer)
Question: Since there are no other problems but the tach, is it safe to assume the tach sensor sends inputs to the computer causing the light?
Posting Guru
Joined: Dec 2005
Posts: 1,528
Likes: 0
From: Peterborough, Ontario
Sounds like it needs a tach sensor. Looking to the driver;s side of the oil filler on these you should see it. A common issue is the insulation separating from the sensor, leading to broken wires, or shorts. Unfortunately they are dealer only for the most part, wiht a few online places too. Hopefully someone will post a link for sources.
Thread Starter
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Senior User
Joined: Jul 2010
Posts: 170
Likes: 0
From: Western SD
Thanks. The blinking light scared me but the truck is perfect - no rust, perfect paint, sharp interior and a great price. I am afraid to pass it up.
I am hoping o take it to a place before final purchase to get the codes to make sure.
I am hoping o take it to a place before final purchase to get the codes to make sure.
Senior User
Joined: Feb 2007
Posts: 426
Likes: 0
From: Pukalani, HI
You may want to ask how long it's been flashing and if it's been shifting really hard. Does it only flash while idling? If left too long it can damage the trans. That should be taken into account while making an offer.
