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Pavlin Koev
Pavlin Koev, CERTIFIED TECHNICIAN
Category: Ford
Satisfied Customers: 3435
Experience:  17 YEARS HANDS ON EXPERIENCE, TRUCK&COACH TECHNICIAN LICENCE
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Ford Mustang i get the cose p0340 i changed the cam sensor

Resolved Question:

i get the cose p0340
i changed the cam sensor , cleared the codes and code p0340 comes back. the car run rough under load at 1100 rpms . the rpms jump up and down like crazy . but if ideal is up car runs great
Submitted: 3 years ago.
Category: Ford
Expert:  Pavlin Koev replied 3 years ago.

Pavlin Koev :

Hi and Welcome to Just Answer! My name is XXXXX XXXXX I will do my best to help.

Pavlin Koev :

if wiring between sinsor and computer is good, you will have to check timing chain components.

Pavlin Koev :

you may have streched timing chain or tone weel for cam sensor may be loose or damaged.

Pavlin Koev :

also check crankshaft sysgnal, and if crank and cam are in sync.

Customer :

how do i tell if there in sync the cam sensor and crank sensor

Pavlin Koev :

use scan tool

Customer :

there not in sync . unplug cam sensor runs almost 100% . i take it i have a timeing chain issue ?

Pavlin Koev :

yes, there is problem in timing chain and camshafts timing area.

Customer :

how do i get the darn timeing chain cover of . would you have a pitcher on this please

Pavlin Koev : Will send you when I can
Customer :

any luck yet

Pavlin Koev :

remove battery, drain coolant/ remove crank pulley/ remove water pump pulley

Pavlin Koev :

remove power steering pump and braket/disconnect EGR valve tube

Pavlin Koev :

disconnect coolant hoses

Pavlin Koev :

remove cam sensor

Pavlin Koev :

remove heater water outlet tube

Pavlin Koev :

remove camshaft syncronizer assembly

Pavlin Koev :

disconnect lower rad hose

Pavlin Koev :

brb

Pavlin Koev :

disconnect crank sensor

Pavlin Koev :

record the location,type and size of the fasteners

Pavlin Koev :

remove cover

Pavlin Koev :

Full Size Image

Customer :

on the camshaft syncronizer . would you have a pitcher of it - in the number one position ? a top view

Pavlin Koev :

Full Size Image

Pavlin Koev :

Full Size Image

Pavlin Koev :

sorry for the delay, but I am still at work

Customer :

im just trying to make sure i put this in right . i forgot to make marks on the camshaft syncronizer.when i took it out . i know how dumb was i

Pavlin Koev :


click here 1

Pavlin Koev :

clcik here2

Pavlin Koev :

click here3

Pavlin Koev :

You can print this

Customer :

can you also tell me what 1406 is please and what i need to do to get rid of it

Customer :

hello

Pavlin Koev :

hi

Customer :

you have been a great help and i want to thank you

Customer :

also code 1406 any ideas

Pavlin Koev :

You are Welcome!

Pavlin Koev :

1406 is problem with EGR differential pressure

Pavlin Koev :

inspect hose connections

Customer :

im lost on that one

Customer :

oh ok

Customer :

the hoses that come from the egr pipe ?

Pavlin Koev :

there are 2 small pipes coming from exhaust and going to D.P.F EGR Sensor

Customer :

yep

Customer :

seen them

Pavlin Koev :

it must not have cracks or not to be pinched or have dips in it

Customer :

ok let say i put new hoses on it well that take care of it

Pavlin Koev :

if old hoses were bad -yes

Customer :

if is a big word

Pavlin Koev :

yes it is more of that involved, but that where you start

Pavlin Koev :

I will send you a test

Customer :

lets say hoses are good what would be my next steps so i dont have to keep bugging you

Pavlin Koev :

Click here to see

Customer :

your such a kind man thank you

Pavlin Koev :

click here-2

Pavlin Koev, CERTIFIED TECHNICIAN
Category: Ford
Satisfied Customers: 3435
Experience: 17 YEARS HANDS ON EXPERIENCE, TRUCK&COACH TECHNICIAN LICENCE
Pavlin Koev and 9 other Ford Specialists are ready to help you
Expert:  Pavlin Koev replied 3 years ago.
Expert:  Pavlin Koev replied 3 years ago.
Thank you for the bonus.
Customer: replied 3 years ago.
timing chain wasnt what was wrong . it still runs rought underload at 1100 rps.
Expert:  Pavlin Koev replied 3 years ago.
do you still have code for cam sensor?
Customer: replied 3 years ago.
i took the car for a long ride when i came home i check for codes and they all pass . but it feels like its missing at the low rpm
Customer: replied 3 years ago.
any ideas
Expert:  Pavlin Koev replied 3 years ago.
Hi, ignition coil pack can cause this without leaving codes. Have you tried another one? MAF sensor will cause this as well.
Customer: replied 3 years ago.
new coil didnt make change. dont maf sensor throw a code when bad ?
Expert:  Pavlin Koev replied 3 years ago.
MAF sensor will throw a code if wiring problem, but not when bad performance. can you borrow one from another vehicle?
Customer: replied 3 years ago.
i bought both new maf and coil . but tonight when i took car i notice something that i didnt notice before. i smell gas in the morning ill be checking the plugs out there new but if i smell gas something ant fireing . also ive check each spark plug wire with timing light those are all fireing . was wondering if also if i was off a tooth on that cam would cause this ?
Customer: replied 3 years ago.

also i have re changed plugs and wires today.still have same problem . run rough at low ideal

Expert:  Pavlin Koev replied 3 years ago.
remove EGR vacuum hose and plug it, then retest, you can also remove EGR and plug egr port to test. leaking EGR will cause this. do not buy new parts just test it first.
Customer: replied 3 years ago.
car seems to run better when i pluged the egr vacume hose just hessatates with a quick snap of peddel . but does run better
Expert:  Pavlin Koev replied 3 years ago.
ok so problem is most likely EGR control vacuum solenoid, follow vacuum hose and it will lead you to it. And looks like camshaft syncronizer may have been off a tooth. and you have positioned correct now.
Customer: replied 3 years ago.
this car came with check engine light on.come with p1309,p0303,p0304 ive changed plugs and wires took apart fuel rail turn key and seen all fuel injectors working.i put another engine in this car cause this guy changed oil and forgot oil plug and fried moter.now i have these codes p1309,p0303,p0304
Expert:  Pavlin Koev replied 3 years ago.
Hi, this is new question, and you have to post it. Thank you

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Pavlin Koev
Pavlin Koev
Ford Mechanic
3435 Satisfied Customers
17 YEARS HANDS ON EXPERIENCE, TRUCK&COACH TECHNICIAN LICENCE