1987 - 1996 F150 & Larger F-Series Trucks1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.
You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!
I have a 1995 F150 , 302 , 5 speed trans with 119,000 miles on it. My speedometer quit working on me about a week ago and I avnt a clue where to look 1st for fixing this problem. Any help will be gratefully appreciated, thanks (Oh this is my son truck)
Last edited by code_red; 05-08-2011 at 12:58 PM.
Reason: add on
First thing to do is check ALL of your fuses.. The speedometer is electronic.. Remember there is 2 fuse boxes..
__________________ No matter how carefully you choose your words, they'll always end up being twisted by others! 1993 Thunderbird LX 3.8L AOD.
1997 Explorer XLT 4X2 4.0L SOHC 5R55E
1997 F-250 HD Extended cab, long bed, 5.8L, E4OD.
If fuse #8 & #18 are good then:
Only wiring harness end of connector is to be probed.
Connect Digital Volt-Ohmmeter to Pin 4 (speed in +) and Pin 5 (speed in -).
Does the voltage increase smoothly and continuously from 0 to approximately 3.5 volts as vehicle speed increases from 0 to 48 km/h (0 to 30 mph)?
If available, a frequency counter may be connected to Pin 4 (Speed in +) and Pin 5 (Speed in -).
Does the displayed frequency of the signal increase smoothly and continuously from 0 to approximately 667 Hz at approximately 48 km/h (30 mph)?
If neither a voltmeter nor frequency counter is available, vehicle speed control may be used as a good indicator. If it works normally, then the speedometer module is at least receiving a speed input signal and the wiring and sensor can be assumed to be good.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.