Zero or 77 miles per hour
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Junior User
Joined: Jun 2004
Posts: 54
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From: AR near Lamar
Zero or 77 miles per hour
Hi group,
I'm a newbie to this forum so please forgive me if I post in wrong place to start with. I am for looking for suggestions for a quick fix to a problem that cropped up when the battery failed. The truck is a 1998 F150 4x4 auto with 5.4L Triton V8.
Last Friday the battery had a total failure, since it was a Motorcraft battery with original covers and clamps, I immediately suspected a battery problem and I hauled out my battery charger(after cleaning clamps) and commenced to charging it. I came back about an hour later and still no start. So I put another battery in and no problem, started right up.
The problem didn't crop up until we started to drive it, the odometer reads either 0 or 77mph. 77 when u move , zero when u brake. I have to drive this truck to Georgia by weeks end so any quick ideas would be helpful. My house and shop burnt down 18 months ago so I'm limited on available test instruments including a code checker. I'm a social security recipient so extra cash for special tools is hard to come by.
I have a sensor tester plus and basic hand tools and a voltmeter. I will buy a code checker if I am convinced by you all that it is an absolute necessity at this time. Thanks and Good Day!
Sincerly, Andy McDonald
I'm a newbie to this forum so please forgive me if I post in wrong place to start with. I am for looking for suggestions for a quick fix to a problem that cropped up when the battery failed. The truck is a 1998 F150 4x4 auto with 5.4L Triton V8.
Last Friday the battery had a total failure, since it was a Motorcraft battery with original covers and clamps, I immediately suspected a battery problem and I hauled out my battery charger(after cleaning clamps) and commenced to charging it. I came back about an hour later and still no start. So I put another battery in and no problem, started right up.
The problem didn't crop up until we started to drive it, the odometer reads either 0 or 77mph. 77 when u move , zero when u brake. I have to drive this truck to Georgia by weeks end so any quick ideas would be helpful. My house and shop burnt down 18 months ago so I'm limited on available test instruments including a code checker. I'm a social security recipient so extra cash for special tools is hard to come by.
I have a sensor tester plus and basic hand tools and a voltmeter. I will buy a code checker if I am convinced by you all that it is an absolute necessity at this time. Thanks and Good Day!
Sincerly, Andy McDonald
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
Welcome to FTE!
The first thing that I would try is to unhook the battery cables and turn your headlights on....and leave it this way for atleast 15 min. Hopefully this will reset the pcm.
If this won't do the trick, then I would reccomend swinging into a local parts house like Autozone, Checkers, Napa, etc. They will often read codes for free for you.
Good luck, and keep us posted!
The first thing that I would try is to unhook the battery cables and turn your headlights on....and leave it this way for atleast 15 min. Hopefully this will reset the pcm.
If this won't do the trick, then I would reccomend swinging into a local parts house like Autozone, Checkers, Napa, etc. They will often read codes for free for you.
Good luck, and keep us posted!
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Junior User
Joined: Jun 2004
Posts: 54
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From: AR near Lamar
Thanks but no cigar
Hi again,
Thanks Super for the advice and I tried that but still the same. I also checked all the fuses in the power box and fuse box. Going to olm out vss and check for 5 volts from pcm next. If that is negative then I'm going to make the 50 mile trip to the nearest parts house and get codes tested. Will advice again after all these steps. Thanks again and would like to know if anyone has ever seen this 0-77mph jumping of odometer before.
Sincerly, Andy McDonald
Thanks Super for the advice and I tried that but still the same. I also checked all the fuses in the power box and fuse box. Going to olm out vss and check for 5 volts from pcm next. If that is negative then I'm going to make the 50 mile trip to the nearest parts house and get codes tested. Will advice again after all these steps. Thanks again and would like to know if anyone has ever seen this 0-77mph jumping of odometer before.
Sincerly, Andy McDonald
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