Question about 2001 Ford Explorer Sport

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2001 Ford Explorer Sport 4.0: Rough idle in gear

When I am idling, let's say at a drive thru or a really long red light, my engine starts to surge. The RPMs never move but I can hear a definite surge in the engine. I am also noticing the smell of exhaust at times too. My MPGs are suffering pretty bad too. I'm averaging about 9-10. Unfortunately, the engine light is on also. I'm in California so I can't take it down to AutoZone to have it tested. I'm hoping it's something I can fix myself instead of having to use my warranty which requires the shelling out of a high deductible just to find out what is wrong. Thanks for your help!

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  • 34 Answers

First you have to check for air leaking under the hood it may be evap sensor after check the fuel filter after you have to check valve cover gasket and then ]check catalytic converter it is all related to your problem

Posted on Dec 05, 2012

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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junkman1249
  • 552 Answers

SOURCE: exhaust blows black on ford explorer

look for a vacume leak. black smoke means it is running very rich

Posted on Mar 29, 2009

  • 420 Answers

SOURCE: 2001 FORD F150 ENGINE SURGES AND DIES AT IDLE

Check all of your vacume lines. If it isn't a vacume line it is most likely the O2 sensor.

Posted on Apr 16, 2009

chrischronic
  • 235 Answers

SOURCE: ENGINE SURGES AT IDLE

with the engine running lift hood and lisen for a vacum leak and check all your vacum lines. if no vacum leak can be found then replace the idle air control valve.

Posted on Apr 21, 2009

Molson02536
  • 3854 Answers

SOURCE: 2001 ford explorer sport,6 cylinder,rough idle and

If there is a Auto Zone around your area, have them scan the Explorer for any DTC codes since it's fee of charge. But in the mean time buy a can of MAF cleaner and follow the instructions and also buy a can of Trottle body cleaner and follow the instructions on the can. Clean the MAF and the Throttle body, also try to get the Idle Air Control falve cleaned too which is on the throttle body. So use up the whole can of Throttle body cleaner and it would not hurt to use two cans. Once everything is cleaned that should fix the problem, the other thing to that would cause your poor idle and stalling is a bad or dirty EGR valve which can be cleaned with Carburetor cleaner since it's stronger then the Throttle body cleaner, just remove the EGR and spray the Carbon build away and place back in place. Note: the Carb cleaner is to strong for the gaskets used on the throttle body so don't use it on the throttle body. Good luck and this should help get your Explorer running 100% soon.

Posted on Jul 09, 2009

  • 1201 Answers

SOURCE: 2003 Ford Explorer-Check engine light with codes lean bank 1 & 2

If you hear air in the engine, there must be a leak somewhere.
Check all the vaccum hoses for bad ones or dissconnected ones. All it takes is a pin hole in these darn emission systems to screw up the whole system.
It could also be a leaking intake manifold gasket.

Posted on Jul 13, 2009

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