• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Check Engine - P0340 Cam Sensor

  • Thread starter Thread starter foned
  • Start date Start date Jun 21, 2009

foned

New Member
Jun 21, 2009
2
0
0
California
Jun 21, 2009
#1
  • Jun 21, 2009
  • #1
First i will say i have very little experience and knowledge in regards to cars in general, im not exactly mechanically inclined.

I have a 2001 Mustang GT, about 8 months ago i had my mechanic at work replace my plugs and boots on my car, I can't remember exactly but a short time after my check engine light came on, and i noticed that when i went to start my car it failed repeatedly, it would start to turn over and die, sometimes it had a sound similar to a small backfire, or sort of like a loud pop, sometimes it would just lug hard and then start. I had my mechanic at work check it out, he said the cam sensor was bad, he replaced it, the light came back on, he looked at it again and basically told me he didn't know what was wrong, that it could be a wiring problem, or computer problem etc. since then i haven't done much about it, i didnt know what to do exactly, and lack the funds to have anyone check into it. but now im being forced, i need to smog my car and with the check engine light on it wont pass.

Through my research i found it could be a problem with the alternator, i took it off and had it tested at auto zone (it was kind of janky the way they tested it, but it tested twice and failed twice) so i replaced the alternator and nothing changed. I had the cam sensor scoped, and was told it was functioning. Now im basically at a loss, except for taking it to a dealership and paying 100+ to have a diagnostic done, and who knows how much they are going to want me to do.

other things -

I cleaned my KNN out and re-oiled it today
I have a vacuum tube on top of my engine that appears to have a hole in it that im going to replace tomorrow
Some of my boots feel as if they could be loose, but i tightened the bolts and it didnt seem to help, so i figured it was just the rubber having give
I checked my fuses, some of them appear to have burn marks on the contact points but don't appear to be bad
I have 98,000 Miles on my car


Any help would be appreciated. thank you in advance.
 

stangnutlx

New Member
May 24, 2005
242
0
0
Coventry, RI
Jun 21, 2009
#2
  • Jun 21, 2009
  • #2
If it turns over but will not fire and the Cam sensor code is active. RR cam sensor!
 

foned

New Member
Jun 21, 2009
2
0
0
California
Jun 21, 2009
#3
  • Jun 21, 2009
  • #3
well it fires now off and on, it never fails completely, it usually takes me between 1-2 tries and it fires.

I'm unsure what RR means, re-replace? I had it scoped at a shop and i was told it was working.. do you still think its the cam sensor?
 
You must log in or register to reply here.

Similar threads

L
Electrical problems with passenger side downstream o2 sensor
  • Lexiii12
  • Sep 14, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
83
2005 - 2014 S-197 Mustang -General/Talk- Sep 14, 2026
Lexiii12
L
Engine Random Misfire at idle.
  • Gulftown980x
  • Jul 29, 2026
  • SN95 4.6L Mustang Tech
Replies
11
Views
447
SN95 4.6L Mustang Tech Jul 31, 2026
squeak93
A
Check Engine codes jumping around
  • azactor
  • Jan 9, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
3
Views
246
1996 - 2004 SN95 Mustang -General/Talk- Sep 24, 2026
DadLife0724
Engine Vacc leak detector
  • Creomod
  • Jul 19, 2026
  • Fox 5.0 Mustang Tech
Replies
4
Views
174
Fox 5.0 Mustang Tech Jul 25, 2026
Mustang5L5
F
Fox 1990 Mustang GT 5.0 A9L – Engine suddenly shuts off but immediately restarts when key turned
  • FishermansFriend
  • Aug 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
16
Views
531
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 30, 2026
General karthief
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?