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Number 8 cylinder is giving a code of misfire. 2009 4.6 L in
number 8 cylinder is giving a code of misfire. 2009 4.6 L in E150 van. I have replaced the coil, the spark plug, and injector … read more
Kurt Mulling
Kurt Mulling
Lead Technician/ now retired
High School or GED
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1998 Ford F-150 4.6 engine I keep getting the codes p0171
1998 Ford F-150 4.6 engine I keep getting the codes p0171 and p0174 . What can I check for ?'I have looked it over for cracks and air leaks and have sprayed with carburetor cleaning while running . Th… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,558 satisfied customers
Mustang GT: 1998 Mustang GT 4.6L SOHC auto. Symptom is noticeable
1998 Mustang GT 4.6L SOHC auto. Symptom is noticeable stumble/miss under load once in 4th gear and TC locks up. DTCs are P0306, P1151, P0174. Replaced coil pack that feeds #6, #6 spark plug, #6 inject… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
27,581 satisfied customers
f150: ford f150 1998, 8cyl, 4.6 ltr. Error code P0300 "multiple
ford f150 1998, 8cyl, 4.6 ltr. Error code P0300 "multiple random cyclinder misfires. Previously cyclinders 3 and 7. Components already checked/replaced: spark plugs and wires both coils crankshaft pos… read more
Pavlin Koev
Pavlin Koev
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2004 Ford F-150: my check engine light..spark plugs..speeds
I have a 2004 Ford F-150 4.6L my check engine light is on and when code scanned it says multiple mis fires in the number two cylinder. I have changed the spark plugs, put a new coil in and a new fuel … read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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2000 F150: V-8, 4.6 ltr truck..problem is intermittent...misfire
I have a 2000 F150, V-8, 4.6 ltr truck. The problem is intermittent. What happens is engine misfire. It feels like it's running on 6 or 7 cylinders when it happens. On the highway, even a slight uphil… read more
Justin
Justin
Vocational, Technical or Trade Scho
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2001 f-150: Have changed plugs, coils and dpfe..Truck chugs..rpm
I have a 2001 f-150 with 5.4. Have changed plugs, coils and DPFE with no change. Truck chugs between 1000 and 1600 rpm.… read more
BOBBYSS
BOBBYSS
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Associate Degree
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Check engine light..it idles and initial acceleration..fuel filter
my check engine light continues to come on. The truck has a small shimmy as it idles and initial acceleration. I changed the fuel filter and air filter which helped tremendously but still does it. Whe… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
24,894 satisfied customers
f150: under load..swapped..has a steady 18inches of vacuum at idle.
4.6 f150 with a miss under load on #5. have changed coil,boot,plug 2times, swapped injectors,good compression, cleaned injectors,ran upper intake cleaner through it,with some soak time. has a steady 1… read more
Dieseljunky2
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2002 taurus: no dtc, looking at cam sensor, vacuum sensor..maf cleaned
2002 taurus wagon 35K miles, 3.0 vulcan engine, has a recurring engine stumble miss at idle and steady load, accelerates fine, starts fine, good milage. stumble is cyclic ( ~8 times per minute) and so… read more
Dennis
Dennis
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Vocational, Technical or Trade Scho
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04 Aviator: V8..a very slight misfire intermittently
I have an '04 Aviator (4.6 V8) w/50K miles. Engine always had a very slight misfire intermittently. Lincoln/Merc dealer could not isolate problem. Check Engine light finally went on (cyl 6 misfire, co… read more
CTFordTech
CTFordTech
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Vocational, Technical or Trade Scho
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1992 Lincoln Town Car: with a 4.6 liter v..228,000 miles..coolant leak
I have a 1992 Lincoln Town Car with a 4.6 liter v-8. It has 228,000 miles. It has a coolant leak that seems to be coming from the rear of the engine. I have checked all of the hoses and they seem to b… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
27,581 satisfied customers
ford f-250: triton..misfiring..vaccum leak on it or other ideas thanks
I have a ford f-250 with the triton engine 4.6 and it says that the 2 and 5 are misfiring how do I check to see if there is a vaccum leak on it or other ideas thanks.… read more
Tim
Tim
Associate Degree
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2005 Lincoln LS: V..I have a part throttle misfire when accelerating
I have a 2005 Lincoln LS V-8 and I have a part throttle misfire when accelerating in 5th gear… read more
Richard
Richard
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Vocational, Technical or Trade Scho
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in idle and at speed but not when I am accelerating...die
in idle and at speed but not when I am accelerating. Sounds a little like the engine wants to die, but does not.… read more
Larry
Larry
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Bachelor's Degree
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2000 lincoln ls: cylinder..coil..injector..5 to 10 miles to set code
2000 lincoln ls v-8 has missfire no 2 cylinder intermitant new coil plug injector compresion test unable to clear code takes 5 to 10 miles to set code… read more
Chris (aka- Moose)
Chris (aka- Moose)
Ford Technician
36,247 satisfied customers
1998 F150: 4.6 liter, V-8 engine..my engine..egr valve..my battery
I have a 1998 F150, 4.6 liter, V-8 engine - my engine lite is on and won't go off, diagnostics states that a large leak exists in the evaporative emission control system and that there is insufficient… read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
25,325 satisfied customers
Have 1999 mercury marquis 4.6 efi. Car hesitates under load ...
Have 1999 mercury marquis 4.6 efi. Car hesitates under load when in traffic going appox 40-45 mph. If I step on it it seems to go away. Have noticed some sputter cruising at 60 mph. Had fuel injectors… read more
LBS Tech
LBS Tech
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Associate Degree
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Meet the Experts:

Ron

Ron

ASE Certified Technician

27,581 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Ford Technician

36,247 satisfied customers

24 years of experience diagnosing & repairing

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Mike V.

Mike V.

Auto Service Technician

3,021 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

1,558 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

Cam

Cam

Journeyman Automotive Technician

12 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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