Question about 1985 Ford LTD
The battery may be the cause but, it could be lots of things. if the battery is bad then just replace it no matter what your symptons are. if you want to test your tp sensor then get a voltmeter and probe the wires at the sensor. there are 3 wires: one is a ground, one is a 5 volt supply, and the third is the return signal to the pcm. turn key on (engine off) test the ground, and check the 5 volt supply wire for voltage (approx 5 volts), then check the third wire with throttle closed it should read about 1.0 - 1.5 volts, then open throttle all the way and voltage should rise to 4.5 - 5.0 volts. if these check out then your tp sensor is good.
Posted on Sep 12, 2008
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Posted on Jan 02, 2017
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