04 ranger v6 3.0L misfire under 1000 rpm
30

Asked by MWalk Nov 30, 2014 at 05:46 PM about the 2004 Ford Ranger 4 Dr XL Extended Cab SB

Question type: General

check engine light stays on. starts blinking, after a couple of minutes, when under 1000 rpm. 3 codes: P0316, P0420 and P0304 (misfire cylinder 4). Fairly new plugs and wires. Just changed plug 4 again but did not help. Runs great above 1000 rpm.

3 Answers
30,955

Tom answered 10 years ago

When you removed plugs ... were they brown, grey or black? Black could be worn engine or head gasket problem

1 people found this helpful.
Mark helpful
30

MWalk answered 10 years ago

Plugs looked good. I am sure the engine is worn some as it has 313000 miles on it. However, I have kept it in good shape running syn oil and changing it often. Most all miles are long distance highway miles.

Mark helpful

Your Answer:

Related Questions

Ranger

Looking for a Used Ranger in your area?

CarGurus has 1,594 nationwide Ranger listings starting at $5,400.

Postal Code:

Shortcuts

Search Ford Ranger Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    4,420
  • #2
    Bob Beaman
    Reputation
    3,010
  • #3
    Jennifer Gorham
    Reputation
    2,630
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
318 Great Deals out of 13,848 listings starting at $1,712
Used Toyota Tacoma
47 Great Deals out of 1,068 listings starting at $9,998
Used Chevrolet Colorado
32 Great Deals out of 1,599 listings starting at $5,800
Used Nissan Frontier
22 Great Deals out of 851 listings starting at $4,795
Used Chevrolet Silverado 1500
196 Great Deals out of 5,897 listings starting at $2,975
Used GMC Canyon
35 Great Deals out of 1,247 listings starting at $5,995
Used Toyota Tundra
34 Great Deals out of 1,356 listings starting at $6,255
Used Ford Mustang
62 Great Deals out of 1,356 listings starting at $4,995
Used GMC Sierra 1500
129 Great Deals out of 6,505 listings starting at $3,975
Used Toyota 4Runner
19 Great Deals out of 301 listings starting at $10,800
Used Jeep Wrangler
134 Great Deals out of 4,983 listings starting at $4,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.