Question about 2002 Ford Explorer
I have a 2002 Ford Exlorer. It would idle rough at stop signs and stop lights like it would cut off it we did not give it a little gas. Yesterday, I was driving it up a slight incline on a street and it cut off and it would not restart. We had to have it towed. I replaced the IAC valve. The SUV still will not start though. Any suggestions?
Check for OBD Codes
Check & Test the Battery
Check Fuel Pressure at the motor
or on scan tool data
Check for Vacuum Leaks
Get caught up on Preventative Maintenance
The fact it ran rough, tells you it needs work
& the shutting off is a different issue
Posted on Nov 07, 2014
Testimonial: "I already checked for vacuum leaks and checked the battery. But how do you check the fuel pressure at the motor?"
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Posted on Jan 02, 2017
This is a common complaint on these cars. I own a 96 myself.
Assuming that you engine is fine and runs smoothly under normal operation, and just is rough "feeling" at idle while stopped; then I would suggest changing the motor mounts...the mounts may not be broken, but the rubber isolators get worn and soft, and transffer normal engine vibration into the chasis of the vehicle. Mine was doing the same after changing the mounts good as new again.
Please note...don't use cheap mounts, by the better grade/quality mounts.
Posted on Aug 27, 2009
If it's not idling and has problems starting, it's probably the IAC motor. It's located on the throttle body. Follow the airfilter box all the way to the engine, where the rubber flex hose attaches. The throttle body should be the first aluminum part you come to. Attached to the side you'll find small little aluminum part with a small wire harness attached. Unplug it, take the IAC motor off and clean inside with carb cleaner. This should fix the problem with the idle.
Posted on Sep 11, 2009
4.9 litre ?? you having a laugh its a 10ton truck engine not a pick up -global warming machine,remove the pump/sender unit and check the gauze filter also look inside tank for a something floating around ,i think the idles is not a related problem to the vehicle losing power but their is a possibility you could have a problem with the little vac operated thing on the fuel injector line that allows the fuel through only when the engine is running
Posted on Mar 15, 2010
SOURCE: Just replaced EGR hose &
OK, if you replaced the EGR hose, did you go all the way to change the EGR Valve? A stuck open EGR Valve can cause a rough idle and almost make it cut off.
Also, a vacuum leak on the EGR valve can cause a rough idle.
Exhaust Gas Recirculation (EGR) Valve Removal & Installation 2.0L Zetec Engine NOTE: When the EGR tube is disconnected from the EGR valve, it must be discarded and a new EGR tube must be installed. The aluminum threads on the EGR valve must be inspected, and a new EGR valve installed if the threads are damaged.
3.0L (4v) Engine To Remove:
Posted on Aug 02, 2010
Check the fuel pressure at the rail assembly, there should be a min of 40 lbs at the rails. Do you have any loss of power under a load? You may have an issue with your o2 sensor that is causing the ecm to send an improper signal to the engine ign/fuel map.
Posted on Dec 07, 2010
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