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Crown Victoria, Marauder, Marquis

2000 Crown Vic Cylinder Misfire

5 posts 3 contributors 1,347 views
SH

Shawnf146OP

Sep 22, 2011 at 9:53 AM
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.
JD

jdmeaux

Sep 22, 2011 at 11:02 AM
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.
*******************
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

SH

Shawnf146OP

Sep 22, 2011 at 7:12 PM
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.
CC

ccappaul

  • Member since Sep 2011
  • 7 posts
  • Salt Lake , UT, USA
Sep 22, 2011 at 9:00 PM
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.
SH

Shawnf146OP

Sep 23, 2011 at 6:11 AM
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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