Question about 2004 Ford Expedition

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2004 ford expedition idle rpm gauge fluctuates do you know what might be causing this,will I need the OBDII to check this problem?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2920 Answers

SOURCE: 2004 GMC Sierra Heater does not heat on low RPM

check your coolant level on the radiator

Posted on Feb 03, 2009

localwonder
  • 6784 Answers

SOURCE: RPM gauge

the wire that runs from the engine to the rpm Gage has been severed. you will need to take it in for repair.

Posted on Feb 07, 2009

  • 1986 Answers

SOURCE: 98 expedition battery light comes on with increase of rpm

There may be no loss of voltage, but is there a surge of voltage?

As for the battery itself when tested, it should read 12-12.5Volts across the
leads when the car is off. When the car is running, the battery should be reading 13-14Volts across the leads, anything lower means the alternator is not charging your battery, anything higher means the alternator is over charging and damaging your battery.

Another cause for the battery light could be your ECU has detected an error

Posted on Aug 20, 2009

Testimonial: "thanks, haven't seen a alternator discharge light go on and off, normally it's either worked or didn't"

czaa
  • 4514 Answers

SOURCE: 2007 Ford expedition won't start

ur oil pump may be failin-there r sensors everywhere on new cars-keepin u from starting as safety measure-computer systems r complex n things dont always show on 1 scan-they kinda hav the mindset of a pc

Posted on Sep 15, 2009

Testimonial: "Thank you. I have spoken with 2 other mechanics who said the same thing regarding the oil pump. It's being looked at. So I'll post more once I know"

  • 400 Answers

SOURCE: 2001 2500hd duramax idle surge. doesn't do it all

Well there are quite a few things that casue a "surge" in a common rail diesel. You will need to check injector flow rates (scanner only). Fuel pressure regulator for pulsing (scanner only). Supply side fuel system for air leaks (seeing if it is sucking air into the system).
My bet would be the injectors, because you say the rpms aren't going up and down, which is usally what happens when the regulator goes bad, and when you **** air into the supply they have an extended crank. Report back with your findings.

Posted on Nov 24, 2009

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I replaced the idle air control valve on my 2003 Ford Expedition, 2wd 4.6L, and disconnected the battery to reset the computer,but now the engine idles high around 1000-1200 rpm's and it will fluctuate...


hi there
re disconnect the battery wait ten seconds reconnect and then when you start the vehicle hold accelorator at the rpm you want it to be at you have to do this to reset the idle simple fix no worries hope this helps you have a wonderful day

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The rpm go up an down


Change your coolant temperature sensor for the computer.(not the one for the temperature gauge).They are located one beside the other,under the distributor cap.The parts supplier will know which one you need.When you start the car cold it usually idles 1800 to 2000 rpm for a minute or so and as the resistance starts to decrease,the rpm drops.after a couple minutes the rpm goes to 1000 rpm.People that are in the habit of driving the car right away at 2000 rpm are putting a huge stress on the axles,and find that they are replacing them every 100000 km.It also wears out your brakes faster .When the sensor goes bad,it causes a fluctuating idle .

Dec 30, 2010 | 1998 Honda Accord

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I have a 2004 Ford Expedition. What # fuse is the cigarette lighter.


Check in Passenger Fuse Compartment the position 41, 20AMP for CIgar Lighter and OBDII DIagnostic Conector.

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Additional details could find in the Ford Expedition Owners Manual (page 256).

Hope helps (remember to rate this).

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Should the oil pressure gauge fluctuate with speed


The oil pressure guage will fluctuate with engine RPM. At idle it should be approximately 20 lbs./sq.in, at high revs about 50-60 lbs./sq.in. Hope this helps any concerns you may have. Good luck!

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Engine vibration at idle, goes away after a little acceleration, mostly when the engine is still cold..


Check the rpm gauge while running. If the RPM needle fluxuates while idling that is caused by a defective spark plug and or a spark plug wire

Apr 08, 2010 | 2004 Ford Freestar

2 Answers

98 expedition battery light comes on with increase of rpm


There may be no loss of voltage, but is there a surge of voltage?

As for the battery itself when tested, it should read 12-12.5Volts across the
leads when the car is off. When the car is running, the battery should be reading 13-14Volts across the leads, anything lower means the alternator is not charging your battery, anything higher means the alternator is over charging and damaging your battery.

Another cause for the battery light could be your ECU has detected an error

Aug 20, 2009 | 1998 Ford Expedition

1 Answer

2004 GMC Sierra Heater does not heat on low RPM


check your coolant level on the radiator

Feb 03, 2009 | 2000 GMC New Sierra 1500

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