2002 Explorer 4.6L - dreaded P0340 code
Thread Starter
|
New User
Joined: Apr 2012
Posts: 19
Likes: 0
im having the same problem also wondering if a clogged cat would cause back up to causing everything to compensate for the vct and cam sensor codes?? i had both replaced already it all started with a misfire in cylinder 6 but ran it with the misfire for a while then truck just went hay wire n would barely run and got a bunch of codes replaced all the coils n plugs cam sensor vct both sides cam sensors on both sides n that was all from ford n still have a problem with the p0340 code coming back only if i drive the vehicle for like 3 miles.... n then runs rough barely runs.. shut it off for a day start it up n runs fine for like 3 miles.... so if u figure out whats wrong let me know ill try it also... 4.6 mountaineer
Thread Starter
|
New User
Joined: Apr 2012
Posts: 19
Likes: 0
still haven't done or tried to do anything else to my truck, just been swamped.
for some reason, i may have some suspicion in the alternator again. I put a new re manufactured one in, but you never know. I was reading up on the 4.6L SOHC mustangs, and 95% of the time, its an alternator problem and lots of people have had their new re manufactured ones mess up right away.
Also, while reading the code scanner, when the revs are above 2000rpm, the code is no longer present.
I'm planning to take it to the dealer and have them have a go at it. I hope they'll be able to figure it out and it wont be ridiculous.
for some reason, i may have some suspicion in the alternator again. I put a new re manufactured one in, but you never know. I was reading up on the 4.6L SOHC mustangs, and 95% of the time, its an alternator problem and lots of people have had their new re manufactured ones mess up right away.
Also, while reading the code scanner, when the revs are above 2000rpm, the code is no longer present.
I'm planning to take it to the dealer and have them have a go at it. I hope they'll be able to figure it out and it wont be ridiculous.
Thread Starter
|
New User
Joined: Apr 2012
Posts: 19
Likes: 0
my truck is going to the dealer this week, will keep updated. I tried another alternator (used, but working), didn't make a difference.
Thread Starter
|
New User
Joined: Apr 2012
Posts: 19
Likes: 0
well I guess I can say my truck is finally fixed thanks to the dealer.
It spent over a month there, and it sure made them scratch their heads.
The local dealer was puzzled, and checked everything externally and electrically on my explorer. Apparently they were going back and forth with Ford Engineering and being told what to do by them.
The end result: According to the dealer, The timing was off by one tooth, and the tensioners that was put in my engine were not the correct one.
I have the truck back, it seems to run good, if not the same but no more CEL. Cost me some pretty pennies. Hoping to take it for emission testing tomorrow
It spent over a month there, and it sure made them scratch their heads.
The local dealer was puzzled, and checked everything externally and electrically on my explorer. Apparently they were going back and forth with Ford Engineering and being told what to do by them.
The end result: According to the dealer, The timing was off by one tooth, and the tensioners that was put in my engine were not the correct one.
I have the truck back, it seems to run good, if not the same but no more CEL. Cost me some pretty pennies. Hoping to take it for emission testing tomorrow
New User
Joined: Aug 2014
Posts: 1
Likes: 0
HELP i have a 2002 ford explorer just recently replaced transmission and fuel pump in march. first gas window wasnt matching gas hand then about a month later my truck stopped on me. a blue mini 15 fuse is being blown eveytime i try to start the truck. all lights and radio still work fine. had two diagnostics done one at a shop and the other at the dealership no answers now the dealership want to test my PCM. im already out of alot of money with towing and diagnostic fees! What should I do. they saying if i have to replace my pcm for everything it will cost 1500$
Senior User
Joined: Oct 2013
Posts: 145
Likes: 0
From: South Mississippi
Fuse Location
If you don't mind can you tell me which fuse box and the fuse number or location of the fuse in the box? 
Thanks WER
Thanks WER
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
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
Thread
Thread Starter
Forum
Replies
Last Post
CdnArmyGuy
Explorer, Sport Trac, Mountaineer & Aviator
4
Oct 8, 2011 10:34 AM
copyman
Explorer, Sport Trac, Mountaineer & Aviator
2
Jan 8, 2007 10:10 AM
ttrolinger
Explorer, Sport Trac, Mountaineer & Aviator
4
Nov 7, 2001 09:31 PM
