Question about 1998 Ford Explorer
Fuel economy is down
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Posted on Jan 02, 2017
SOURCE: trouble shoot low fuel economy
try any of the following::::new spark plugs, fuel injecter clean(if it has any), using cruise control on long flat roads,new fuel filter, new after market air filter, pcv valve helps a little.. very easy to change to.......thats all i can think of..
Posted on Jul 20, 2010
Testimonial: "I'll check plug gaps (?) and double check the dates of my fuel filter and air filter. I keep the box tab with the date and mileage on them. Could an EGR also be a problem. The engine has no signs if trouble but just seems not 100%. Thanks for the help, John"
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Dec 05, 2014 | Holden VT Cars & Trucks
The Manifold Absolute Pressure (MAP) sensor
responds to changes in the intake manifold pressure (vacuum). 5 Volts is
supplied to the sensor from the PCM (powertrain control module). Inside the MAP sensor is a
resistor that moves in relation to manifold pressure. The resistor varies the
voltage between about 1 volt to 4.5 volts (depending on engine load)
and that voltage signal is returned to the PCM to indicate manifold pressure
(vacuum). This signal is essential for the PCM to determine fuel delivery. A
P0107 DTC is set when the PCM sees that the MAP signal voltage is less than .25
volts which is too low.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Potential Symptoms
The causes of a low MAP sensor signal
circuit (P0107) could be
any of the following:
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How to Check? The MAP has three electrical
pins, one for 12 volts (or 5 volts) reference, one for ground and the third
(the middle one generally) is the 'signal' output. Put a voltmeter positive connector on the 'signal'
pin of the connected socket (back probe by inserting a bit of wire). Apply suction to the vacuum input, even
sucking on it with your mouth, should result in a measurable voltage output. At normal air pressure (open throttle) the
voltage seen should be 0 volts. As
vacuum is applied the voltage output should change to about 5 volts (throttle
closed at idle). If no transition seen
the MAP is faulty.
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