my engine light came on... Power loss... What does this mean?

Asked by Aug 04, 2015 at 04:43 PM about the 2003 Ford Expedition XLT

Question type: Maintenance & Repair

03 ford expedition 5.7L... Power loss? when engine is running there is a hissing sound.

2 Answers

160

Check your vacuum lines, a hissing that loud should be easy to spot, but will cause both. To be sure go to parts store and have your code read, sometimes a sensor will break inside and cause the noise.

1 out of 1 people think this is helpful.

my 99 just did that, and it turned out to be the water T that screws into my manifold. the nipple on it was cracked and it finally broke. I replaced it and my engine light went off and the car runs a lot better.

Your Answer

Add photo

Related Questions

Search Ford Expedition Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,670
#2 oldtimer37
oldtimer37
Reputation 1,140
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
868 Great Deals out of 28,110 listings starting at $1,700
Used Ford Explorer
1,104 Great Deals out of 72,088 listings starting at $1,000
Used Chevrolet Suburban
562 Great Deals out of 19,304 listings starting at $1,964
Used Lincoln Navigator
128 Great Deals out of 6,002 listings starting at $2,495
Used Ford F-150
3,134 Great Deals out of 208,988 listings starting at $1,200
Used GMC Yukon
570 Great Deals out of 17,251 listings starting at $1,875
Used GMC Yukon XL
355 Great Deals out of 12,038 listings starting at $2,200
Used Cadillac Escalade
294 Great Deals out of 10,296 listings starting at $1,900
Used Ford Excursion
20 Great Deals out of 805 listings starting at $2,900
Used Nissan Armada
169 Great Deals out of 7,523 listings starting at $3,900
Used Dodge Durango
379 Great Deals out of 23,257 listings starting at $1,500
Used Toyota Sequoia
160 Great Deals out of 6,028 listings starting at $1,495
Used Jeep Grand Cherokee
922 Great Deals out of 66,789 listings starting at $1,500
Used Ford F-250 Super Duty
472 Great Deals out of 43,396 listings starting at $2,750
Used Chevrolet Silverado 1500
2,606 Great Deals out of 152,725 listings starting at $1,500

Used Cars For Sale

2017 Ford Expedition XLT For Sale
1,791 listings starting at $36,527
2016 Ford Expedition XLT For Sale
78 listings starting at $27,991
2015 Ford Expedition XLT For Sale
158 listings starting at $22,811
2014 Ford Expedition XLT For Sale
5 Great Deals out of 89 listings starting at $20,968
2013 Ford Expedition XLT For Sale
8 Great Deals out of 111 listings starting at $16,944