SuperMotors.net Forums
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 Posted:9/22/2011 09:53 |
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I have a 2000 Crown Vic P71, the car runs great but has one problem. Whenever I'm in 2nd gear and give it a little gas it starts to misfire. But it doesn't seem to misfire when I give it a bit more gas. The check engine light has stayed on for the most part and it flashes when I go up steep hills. I checked the codes on the engine light and it says cylinders 3 and 7 are misfiring. I know it could be a number of things, does anyone have any idea what the problem might be?
2000 Crown Victoria P71
*Stock*
Ex-State Highway Patrol
This thing could keep up with most mustangs out there. |
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Posted:9/22/2011 11:02 |
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Google the EXACT code you got from the engine. You may be surprised at what the results are for fixing it.
I once got the code for a bad O2 sensor. It turned out to be a vacuum leak. Saved $85..doing a search FIRST.
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PROUD MEMBER of www.crownvic.net
It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified. 
13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter
.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos
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Posted:9/22/2011 19:12 |
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I appreciate that, but I got the codes for it, 303 and 307 which I was told were cylinder misfires by a guy at autozone. So I'm not really sure where to go from there.
2000 Crown Victoria P71
*Stock*
Ex-State Highway Patrol
This thing could keep up with most mustangs out there. |
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ccappaul
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• Salt Lake , UT, USA |
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• Registered on 9/21/2011 |
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• 7 posts |
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Posted:9/22/2011 21:00 |
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Shawn, I have been learning alot lately.
Take your coils and swap the missing cylinders for ones that are not. If the miss follows Its your coils.
Also same with your injectors. |
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Posted:9/23/2011 06:11 |
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Alright I will get back to you when I have that done, thanks very much though, something strange happened last night. I started up my car to go home from work and the check engine light had went off. I tried to see if it would misfire but as far as I could tell the car did not misfire the whole drive home?
2000 Crown Victoria P71
*Stock*
Ex-State Highway Patrol
This thing could keep up with most mustangs out there. |
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