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1994 Ford Crown Victoria with rough idling
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Neti
User
Dec 5, 2012, 6:28 PM
Post #1 of 6
(2321 views)
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1994 Ford Crown Victoria with rough idling
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Hello. I'm having a issue with my 1994 Crown Victoria (4.6L engine) in which during operation the engine idles very rough. Has about 100,000 miles. It seems to improve for a few seconds during acceleration , but goes back to being rough. I plan to check the electrical to see if that it is the problem , and other such things but so far I am baffled. Hoping it's not a stuck valve. This issue could be many things , so I apologize if this question is too vague , but I plan to do more extensive testing. Thanks for any possible help you can provide.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 5, 2012, 6:30 PM
Post #2 of 6
(2319 views)
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Re: 1994 Ford Crown Victoria with rough idling
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What's the status of the obvious things like plugs, wires and coil?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Mechman
New User
Dec 5, 2012, 6:49 PM
Post #3 of 6
(2307 views)
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Re: 1994 Ford Crown Victoria with rough idling
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Also , I forgot to add that while it is running rough , there is a very deep vibration that can be felt inside the cabin. While the car is cold or still warming up , when the heater is running there is a very slight smell of gasoline , but goes away when the car gets warmer. When the car hits high RPM , the engine runs fine for a moment , but goes back to being rough.
I do plan to check electrical , so I'll post my results when I can get to that.
Oops,sorry, I logged into the wrong account when I made this post.
(This post was edited by Mechman on Dec 5, 2012, 6:50 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 5, 2012, 6:53 PM
Post #4 of 6
(2301 views)
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Re: 1994 Ford Crown Victoria with rough idling
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Multiple accounts are not allowed. You need to stick with one account. I am blocking the last one
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 5, 2012, 6:53 PM
Post #5 of 6
(2297 views)
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Re: 1994 Ford Crown Victoria with rough idling
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Also check for vacuum leaks. Listen for hissing noises. The PCV elbow at the throttle body likes to become mushy and suck itself in causing a vacuum leak.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 5, 2012, 6:54 PM)
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Neti
User
Dec 5, 2012, 7:02 PM
Post #6 of 6
(2287 views)
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Re: 1994 Ford Crown Victoria with rough idling
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Sorry , I didn't check the rules. I'll stick with this account.
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