Question about 1996 Ford Aspire
Code p 0470 and p0400 exhaust pressure sensor A circuit what and where is this ?
P 0470 is "EGR boost sensor" failure. replacement of the sensor without further diagnosis will most likley end with the check engine light still burning brightly. pull the egr valve off of the intake. the bottom port is exhaust pressure. the top runs through the lower and upper intake to just behind the throttle body. chances are the port through the intake is completely plugged with carbon. split the upper and lower intake and clean the egr passages. a good carb and choke cleaner and a stiff wire will break up most of the carbon.
Posted on Apr 11, 2010
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Posted on Jan 02, 2017
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