can someone help!!!
Thread Starter
|
New User
Joined: Apr 2010
Posts: 8
Likes: 0
can someone help!!!
will ca clogged catalytic converter cause my 03 ranger and miss fire and die out at fwy speed it seems fine driving around the city but under any kinda of hard load when i step on the gas i slow down.
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
A number of things could cause your wimpy power problem. Right now it sorta sounds like a fuel delivery/fuel trim problem. Do you have a CEL lit???? If so, most autoparts stores will scan the computer for trouble codes at no cost, then post all the code Numbers, as they can provide good trouble shooting clues.
Thread Starter
|
New User
Joined: Apr 2010
Posts: 8
Likes: 0
Trending Topics
Posting Guru
Joined: Feb 2010
Posts: 2,057
Likes: 2
From: Newport, N.C.
That doesn't necessarily mean that everything is good.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
OK, good feedback on the P0306 trouble code. A misfire under load is usually a spark problem, so the spark plug, plug wire & their connections belong on your suspect list.
Closely inspect for improper/excessive plug gap, cracked, chipped, dirty internal or exrernal plug insulator, damaged plug wire conductor/improper resistance, contacts, loose contact on both ends, damaged insulation, or improper routing, use the factory route & all of the wire looms.
If no joy, maybe raise the hood after dark & look for arcs & sparks along #6 plug wire all the way to to the spark plug. If nothing, with the engine at warm idle, try a "wet down" test, all along #6 plug wire & plug boot with a spray bottle of water & look for arcs & sparks, or a rough idle.
Still Lots of unknowns, so you could have more than one problem, was the problem there before the new parts???
Closely inspect for improper/excessive plug gap, cracked, chipped, dirty internal or exrernal plug insulator, damaged plug wire conductor/improper resistance, contacts, loose contact on both ends, damaged insulation, or improper routing, use the factory route & all of the wire looms.
If no joy, maybe raise the hood after dark & look for arcs & sparks along #6 plug wire all the way to to the spark plug. If nothing, with the engine at warm idle, try a "wet down" test, all along #6 plug wire & plug boot with a spray bottle of water & look for arcs & sparks, or a rough idle.
Still Lots of unknowns, so you could have more than one problem, was the problem there before the new parts???
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
Had a misfire on my 4.0 and since I had just put in new plugs and wires less then 500 miles before started looking at injectors etc. In the end I took the plugs out and tested each one and found a bad plug. Yes bad at 500 miles. replaced it and the miss went away.
Thread
Thread Starter
Forum
Replies
Last Post