Question about 2003 Ford Explorer
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Posted on Jan 02, 2017
silly question, however did you check the air box for nests. it is not uncommon for rodents to climb in and make themselves at home. i would also say to get a maf from ford. check ALL around the engine compartment and underneath for evidence of rodents and their leavings. youll be very suprised what you may find.cheers
Posted on Dec 19, 2009
there is a pressure feed back sensor going bad all the times
also check the two hoses connected to this sensor for crack or blockage
check the pipe that goes to the egr valve for crack
it won't hurt to pull the egr valve back out to check to see if there is any thing cause the valve to stay open
Posted on Mar 07, 2010
Testimonial: "thank you i will let you know if it works "
SOURCE: '03 Ford F-150, 5.4 L.
off, EGR valves seldom fail. Yours probably had nothing wrong with it in the
DPFE sensors, OTOH, have been a problem for Ford for years. Best results have been obtained with the upgraded Ford replacement.
Make certain the hoses to the DPFE sensor did not get reversed and are not clogged if you have the non-plug-on version. If the upstream hose is getting blown off or is over-pressurized, clogged cats could be the issue.
Check the Vacuum line at the EGR valve for vacuum at idle and while reving the throttle. It should not have and vacuum while the vehicle is not in motion.
It should not have any vacuum while the vehicle is not in motion.
If it does, you'll have EGR flow at the wrong time which usually causes idle problems and low speed stumbling/misfires. EVR solenoid is either dirty or sticking open. Try popping the cap off and cleaning the filter element and the top of the valve with compressed air.
It takes a minimum of two drive cycles in which OBDII runs the EGR test for it to turn on the MIL if there are failures.
When the code is cleared typically you have to run through a specific cycle. With Ford a normal driving can take a couple of days to a week or more. There is page that lists the cycle and you can run through it about 45 minutes
Click on the link directly:--
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Posted on Aug 28, 2010
SOURCE: when I come to a
The throttle position sensor [TPS] keeps the engine running when you stop at a light.
it is located under the breather it has a plunger that pushes out against the throttle to keep engine running.
Posted on Nov 13, 2010
Testimonial: "Checked the sensor, found it to be dirty, cleaned it with carb cleaner. Truck runs alot better now. Thanks "
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