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Trouble code 542. KOEO 542,yes. 1994 f250 460 7.5l. Checked
Yes. Checked the relay, inertia switch and tank selector … read more
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I have a 1992 Ford Ranger with a 2.3L engine. KOEO fuel pump
I have a 1992 Ford Ranger with a 2.3L engine. KOEO fuel pump runs all the time. Computer gave me these two codes: 452 and 542. When i can start it it doesn't want to start right away. Can you please t… read more
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Vocational, Technical or Trade School
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95 Mustang 5.0 just got a tester for my car. I've been having problems with it not starting, and when im driving, it just dies on me. Replaced spark plugs/wires, coil, and battery. got codes for ect s… read more
Ron
Ron
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Vocational, Technical or Trade Scho
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95 E250 that wont start. It died on my wife while I was out of town.
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Amedee
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91 f250: fuel pressure..obd..fuel pump relay,replaced pcm..stalled
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Bob
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asking about 1995 ford explorer starts then dies after 5 mins or so then wont restart changed fuel pump 1year ago , just changed the front fuel filter… read more
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My 1994 SHO runs fine on initial startup..misses..stalls when put
My 1994 SHO runs fine on initial startup, but after shutting it off it runs terrible when warm, The idle becomes irregular, it misses, and stalls when put in gear… read more
davehop
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I have a 1994 Bronco 5.8L EFI, the engine will crank but will
I have a 1994 Bronco 5.8L EFI, the engine will crank but will not start. There is no pressure at the fuel charging manifold, the fuel pump has been replaced, I have grounded the FP diagnostic lead on … read more
Tim
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91 f150: 5.0 / e40d trans..w/dual tanks...truck started bucking
I have a '91 f150 / 5.0 / E40D trans. w/dual tanks. The truck started bucking and snorting last week. Tried to change to the second tank to find it had died (pump won't kick in at all). After pulling … read more
EMRSR
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94 Aerostar: 35mph OBD code 542 tested ground..PCM..whats wrong
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A. Penland
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95 aerostar: 4.0L..OBD..Fuel pump relay..Engine runs (idels &
95 aerostar 4.0L EFI 109k --- OBD I, code #556 '' Fuel pump relay primary circuit failure.'' ------- Engine runs (idels & accelerates fine for 10 min.) Then runs ruff and rich untill stalls. Restart -… read more
A. Penland
A. Penland
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Vocational, Technical or Trade School
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Scanner..motor ground.I grounded the black wire going to the fuel pump
i am getting a 542 error code on my scanner-(fuel pump open connection electronic control assembly to motor ground.I grounded the black wire going to the fuel pump-no luck!. Where is the electronic co… read more
Tim Mohr
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94 Explorer: that ran fine last night..it wouldnt start.
I have a 94 Explorer that ran fine last night. Got in it this morning turned the engine over ... and nothing. It wouldnt start. It acted like it wasnt getting fuel. I ran the OBD test on it and got th… read more
JOHN aka Eauto
JOHN aka Eauto
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1994 ford bronco: a 5.0 that I just bought as a project vehicle..spark
I have a 1994 ford bronco w/ a 5.0 that I just bought as a project vehicle. The vehicle had been running on propane and suffered an engine fire. I purchased and replaced all ignition components and we… read more
Tim
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94 ford explorer: fuel filter..fuel pump relay..code reader..regulator
94 ford explorer- I'm getting spark, I hear the fuel pump when I first turn the key on, I've changed the fuel filter and the fuel pump relay, the code reader says 556 (primary fuel pump circuit failur… read more
Jim
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Ranger: Check engine light..rev..acceleration at r.p.m...Compression
I have a ''94 Ranger 4.0 liter 5-speed. Check engine light is not on but, I''m experiencing generally sluggish performance, intermittent poor take-off from stop (I have to rev it to keep from stalling… read more
Ron
Ron
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Vocational, Technical or Trade Scho
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1995 Ford Explorer: coded..the fuel pump relay, but didnt fix
I have a 1995 Ford Explorer that has fire but no fuel. I coded it to find 542 and 556 dianogistic codes indicating primary and secondary citcuits failed. I replaced the fuel pump relay, but didn''t fi… read more
POWERSTROKE
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94 f-250: fuel pump..mile..Today I drove it and now it wont start.
I have a 94 f-250 and have been having issues with the fuel pump. I would drive and it would quit then it would start and a mile down the road quit. Today I drove it and now it wont start. Have spark … read more
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Ron

Ron

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Chris (aka- Moose)

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Mike V.

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Richard

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

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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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