99 expedition runs fine then every so often under a load acts like ignition module is breaking down when gets to operating temp.

Asked by Jul 08, 2014 at 10:53 PM about the 1999 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

At first for about a year it would flutter exactly at 1200 rpm. Replaced throttle position  
sensor, not successful.
Now it does it at random rpm after warm up.

4 Answers

61,305

Is engine light on?

4,745

Have you checked the coil packs?

I wish it had a check eng. light and have hooked up a scanner any way but no codes at all. The 5.4 has a coil for each individual plug / no coil pack. I also discovered it has no ignition module. Replaced cam sensor. Next step is crank. If that doesn't do it I'm gonna replace the fuel filter that my wife first suggested since we had a similar issue back 8 years ago and the fuel filter which is regulerly changed now was clogged. Will keep youall posted. Thanks

4,745

Sorry, I called them a coil pack but, yes, they are individual coils. I would think if you had a bad fuel filter, after over a year, it would be so clogged nothing would pass through. I still think it is ignition.

Your Answer

Add photo

Related Questions

  • 2003 ford expedition 4.6 7 answers

    My 2003 expo 4.6 started dying and then restarting during acceleration. It started saying check charging system so i discovered the alternator was bad. So i changed it. Charges fine now but after ...

    2003 Ford Expedition Eddie Bauer

    -

    Maintenance & Repair

  • 1999 Ford Expedition EB 4WD 5.4L Sputter Shutter on Load Heavy Acceleration 5 answers

    1999 Ford Expedition EB 4WD 5.4L 200K sputters and shutters under load / heavy acceleration, low or high RPM's. Normal driving 1/3 peddle and under 2K RPM's NO sputter or shutter. Initially told mis...

    1999 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

    -

    Maintenance & Repair

  • temp guage jumping from cold to hot then back to the middle. fluid lights come on and off. 6 answers

    hello I have a 2001 ford expedition my temp guage ( the one with the 'H' and 'C' on it) was going from the 'C' to the 'H' and then the middle for some reason and the oil and I guess transmission fluid...

    2001 Ford Expedition XLT

    -

    Maintenance & Repair

  • replaced heater core in my 99 expedtion warm air in front cabin and cold air in the rear cabin. 3 answers

    just to help narrow down the options to my problem with my 99 expedtions heat. i noticed late last fall that my expedition wasn't blowing hot air in the front at all but hot air in the rear when turne...

    1999 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

    -

    Maintenance & Repair

  • 1990 tempo dies while running 13 answers

    car runs great until it gets to a certin temp. then it dies. and wont start back up until it cools down. I notice it has no spark after dying. I did a complete tune up and the tfi module on the side o...

    1990 Ford Tempo 4 Dr GL Sedan

    -

    Maintenance & Repair

Expedition

Looking for a Used Expedition in your area?

CarGurus has 24,740 nationwide Expedition listings starting at $1,999.

ZIP:

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,780
#2 Larry Sturgis
Larry Sturgis
Reputation 1,220
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
775 Great Deals out of 28,451 listings starting at $1,500
Used Ford Explorer
936 Great Deals out of 73,994 listings starting at $750
Used Chevrolet Suburban
462 Great Deals out of 18,781 listings starting at $1,399
Used Lincoln Navigator
118 Great Deals out of 5,623 listings starting at $1,299
Used Ford F-150
2,700 Great Deals out of 212,349 listings starting at $1,000
Used GMC Yukon
519 Great Deals out of 17,127 listings starting at $1,799
Used GMC Yukon XL
359 Great Deals out of 12,480 listings starting at $1,995
Used Cadillac Escalade
308 Great Deals out of 10,692 listings starting at $1,900
Used Ford Excursion
17 Great Deals out of 790 listings starting at $1,900
Used Dodge Durango
299 Great Deals out of 24,117 listings starting at $1,500
Used Ford F-250 Super Duty
395 Great Deals out of 45,079 listings starting at $2,000

Used Cars For Sale

2017 Ford Expedition For Sale
3 Great Deals out of 12,034 listings starting at $31,990
2016 Ford Expedition For Sale
68 Great Deals out of 2,106 listings starting at $26,901
2015 Ford Expedition For Sale
38 Great Deals out of 1,262 listings starting at $22,711
2014 Ford Expedition For Sale
35 Great Deals out of 831 listings starting at $15,995
2013 Ford Expedition For Sale
71 Great Deals out of 994 listings starting at $14,988