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2006 ford crown victoria police interceptor engine problems
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gill29501
New User
Jul 2, 2013, 3:13 PM
Post #1 of 7
(5120 views)
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2006 ford crown victoria police interceptor engine problems
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Hello I have a 2006 ford crown victoria police interceptor. It has a 4.6L v8. i got this car about three weeks ago. when i first got the car there was a slight jerk at idle no engine codes were thrown. i drove the car home and from 40 to about 50 mph the car would jerk if i leveled off at speed like holding at 45 for the speed limit. The check engine light then came on. i checked the code when i got home it was only throwing one code p0300 multiple random missfire. i replaced the spark plugs, spark plug boots and spring that connect the coil to plug, fuel filter, oil and filter, and air filter. i drove the car again and same problem check engine light came on again got it checked at the local auto parts store the same code was thrown. p0300 they checked to see were the missfire was. the computer said multiple coils were bad. i replaced all coils with accel super coils at that time i also replace maf sensor as well as the tps. when i finished those repairs i drove the car again still same problem, same check engine light code. i dont know what else it could be. Any help would be very appreciated me and my wife are tired off spending money on it hoping its something simple i am over looking. I thank you for your time.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 2, 2013, 4:01 PM
Post #3 of 7
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Re: 2006 ford crown victoria police interceptor engine problems
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Where's 'way2old' about now? Whatever. You've thrown a lot at this for nothing already and most for nothing. Get a pro diagnosis now but for cheap you could check for plain vacuum leaks and fuel pressure.
No doubt too late but was this (probably 95% sure) a former municipal hard use vehicle? You asked for it IMO and didn't even make it home before troubles started - checked it out well didn't you?
May have been a great price up front but bet you'll pay thru the nose to make it dependable for the long run,
T
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gill29501
New User
Jul 2, 2013, 4:38 PM
Post #4 of 7
(5077 views)
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Re: 2006 ford crown victoria police interceptor engine problems
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i checked the coils with a multi meter and two were reading low about .6 if i remember right i replaced all of them to be on the safe side i didnt trust the person at the parts place got the coils online. yes it was a municipal car and probably had the crap drove out of it i was planing on doing a full tune up when i got it anyways because of the abuse im sure it has seen. it was checked for.vacuum leaks at my local shop. thanks again for the input and time.
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Discretesignals
Ultimate Carjunky
/ Moderator
Jul 2, 2013, 4:47 PM
Post #5 of 7
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Re: 2006 ford crown victoria police interceptor engine problems
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Need to take it to a shop that can access mode$06 to figure out which cylinders are misfiring.
They can also do a cylinder power balance test, if they have the right equipment, to figure out which cylinders are missing, if it misses at idle enough.
http://www.youtube.com/watch?v=jOFL99D_f4Q
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 Jul 2, 2013, 4:48 PM)
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gill29501
New User
Jul 2, 2013, 5:45 PM
Post #6 of 7
(5048 views)
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Re: 2006 ford crown victoria police interceptor engine problems
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ok thank i am assuming that the ford dealership would have this equipment? If so i will make an appt to resolve the issue. thanks again
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 3, 2013, 3:10 AM
Post #7 of 7
(5019 views)
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Re: 2006 ford crown victoria police interceptor engine problems
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Yes, they would, although they would not be the only ones. There are many qualified independent shops also. I would stay away from the national chains though.
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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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