What is causing my 5.4 to backfire and run rough

25

Asked by Feb 11, 2013 at 09:33 AM about the 2005 Ford F-250 Super Duty XLT 4WD Extended Cab SB

Question type: Maintenance & Repair

Truck barely runs . backfires , catalatic converters glow red . truck will barely move. Computer shows no codes

4 Answers

No codes? Backfiring is usually timing problems or some reason unburned fuel explodes in the combustion chamber during exhaust stroke. If the spark fails in one or more cylinders while engine is running it will backfire, you have a spark and/or timing issue

1 out of 1 people think this is helpful.

Hold on I was not paying attention..the cat glowing...running rich...o2 sensor or some other reason too much unburned fuel in it

1 out of 1 people think this is helpful.
25

Have replaced cats , plugs and coil packs. also fuel pump no results

2 out of 2 people think this is helpful.
26,055

If the cat is glowing red it sounds likes its stopped up, came apart on the inside.that would cause your truck to run bad cant get the exhaust out. replace the cat that is glowing red you will probaly find chunks fallin out when you remove it

Your Answer

Add photo

Related Questions

F-250 Super Duty

Looking for a Used F-250 Super Duty in your area?

CarGurus has 43,492 nationwide F-250 Super Duty listings starting at $1,900.

ZIP:

Search Ford F-250 Super Duty Questions

UK Questions

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

Ford F-250 Super Duty Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 710
#2 FordNut
FordNut
Reputation 650
#3 kbro
kbro
Reputation 590
View All

Related Models For Sale

Used Ford F-350 Super Duty
415 Great Deals out of 26,396 listings starting at $3,495
Used Ford F-150
3,106 Great Deals out of 209,133 listings starting at $1,200
Used Chevrolet Silverado 2500HD
390 Great Deals out of 27,210 listings starting at $2,998
Used Dodge Ram 2500
161 Great Deals out of 5,650 listings starting at $2,995
Used GMC Sierra 2500HD
155 Great Deals out of 13,277 listings starting at $3,500
Used Chevrolet Silverado 1500
2,584 Great Deals out of 152,651 listings starting at $1,500
Used Ford F-450 Super Duty
48 Great Deals out of 2,647 listings starting at $8,497
Used Toyota Tundra
666 Great Deals out of 28,477 listings starting at $2,798
Used GMC Sierra 1500
991 Great Deals out of 60,344 listings starting at $1,299
Used Dodge Ram 1500
512 Great Deals out of 13,112 listings starting at $1,495
Used Dodge Ram 3500
97 Great Deals out of 2,336 listings starting at $5,000
Used Toyota Tacoma
713 Great Deals out of 32,259 listings starting at $2,750

Used Cars For Sale

2017 Ford F-250 Super Duty For Sale
7 Great Deals out of 19,817 listings starting at $25,148
2016 Ford F-250 Super Duty For Sale
37 Great Deals out of 7,684 listings starting at $23,756
2015 Ford F-250 Super Duty For Sale
34 Great Deals out of 2,421 listings starting at $19,500
2014 Ford F-250 Super Duty For Sale
17 Great Deals out of 1,047 listings starting at $13,950
2013 Ford F-250 Super Duty For Sale
27 Great Deals out of 969 listings starting at $12,500