Question about Ford Expedition
I have a 99 explorer with V8 that runs great! and I get
a whopping 13mpg. But it has high miles. So I was
going to change the catalytic converters as they may
have started to plug up. And any exaust restriction
will drop your mpg, even a bent tailpipe will cause a
drop. There are other possible reasons for this, such as the o2 sensor sending a signal to the pcm calling
for a more fuel rich, air fuel mix than neccesary. Or
the temp sensor failing to signal that the engine is
at operating temp, and stays to some degree in cold
start mode. But either of these conditions would be
noticed through dtc codes- a smell or engine performence. I hope I was of some help.
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
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