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Tina Wilbert Posted on Sep 10, 2015
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What could be wrong with a check engine light on and O/D light flashing off in a 1998 ford explorer

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Christian Krentz

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  • Ford Master 694 Answers
  • Posted on Sep 10, 2015
Christian Krentz
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Joined: Mar 01, 2014
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You have a running code or its called limp mode if u have access to a obd2 scanner u can find your gremlin ! Thanks Chris

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How can I get the codes from check engine light on a 1998 ford explore 4.0 with out a code scanner

paper clip trick and ignition on
flash engine light count for codes list
might be online somewhere
anything on youtube to do this with the 1998 ford explorer ?

first you will need to know which pins to bridge on the diagnostic port

or you could fry the ECU

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O?D light flashing on 1998 ford explorer saying it is off. when you try to drive it the overdrive goes in and out.

the overdrive light flashing on a A4Od transmission is a fault signal for the transmission , just like a ck engine light but for the transmission only , get a code read to find the fault stored in the ecm and then you'll know what exactly it is
its very common for engine swaps to have a few intermittent sensor failures on restart due to the connectors all getting maybe not all the care and protection they deserve in the swap (plastic baggies) and having a bit of dirt and corrosion in them now (spray contact cleaner)

with the od in/out/in/out an educated guess is that the engine throttle position sensor is not being read now , but a code reader will tell all
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I have a 1998 Ford Explorer that just hit 190,000 miles yesterday and runs fantastic. Earlier this week, I had a tune up done. Today the check engine light began flashing, stays solid for a while, goes...

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Check engine light will not go out

Mileage? O2 sensor? Scanner - 35.00 at Advance/Auto Zone - can be a big help accessing trouble codes.
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