AutoElectNG:
Vehicle history before this codes popped up?

Sounds more mechanical than electrical something to do with the Variable Camshaft Timing and the associated solenoid not working according to specification

Location?

com1234:
Total 5000 ....though planning to change to synthetic i am afraid of complications with abrupt change.

com1234:
Total 5000 planning to change to synthetic i am afraid of complications with abrupt change.

AutoElectNG:


10w40?

How many miles since last oil/filter change?

com1234:
. I changed it 2 weeks ago, i ve not really travelled since then....so less than 500. It still appears clean.

AutoElectNG:


Is that the first usage of 10w40? By the way wrong oil viscosity is just one possibility there are others....only physical inspection will zero in on the actual cause.

com1234:
.



No. That is what the previous owner has been using.

mayor2013:
Wrong oil problem. Any unusual noise at cold start or hot start

AutoElectNG:


That could cause this...wrong oil viscosity run long enough

com1234:
.


Occasional jiggling (as if one is holding keys) at start up.


Any recommendation for the wrong oil issue? I.e the way forward.



Can other causes like sludges, faulty solenoid and wrong oil viscosity make the timing chain not to be aligned? Cos i am planning to get a mechanic to help me check the timing and also the presence of sludges.

com1234:
.


Occasional jiggling (as if one is holding keys) at start up.


Any recommendation for the wrong oil issue? I.e the way forward.



Can other causes like sludges, faulty solenoid and wrong oil viscosity make the timing chain not to be aligned? Cos i am planning to get a mechanic to help me check the timing and also the presence of sludges.

mayor2013:


Check for sludge first by opening valve cover. Are you sure you are not the engineer handling this job

AutoElectNG:


Given your question about the way forward and not linking wrong oil to sludge, please take the time to go through this thread

https://www.nairaland.com/3842959/need-professional-advice-n-mechanic

Like I said before to pin it down on wrong oil, a physical inspection as suggested by the poster immediately above is the way to go

com1234:
thanks i followed the link and read the whole thread and links in it.

Inception:
there is an OCV strainer on that engine. locate it and clean it.

it is usually at either the alternator end or power steering pump end on the engine block.

another issue may be that timing has not been set properly.

com1234:
UPDATE: the problem was solved using :
the factory repair manual,
the inputs here
and DIY guide by other notable car talk gurus.

The Camshaft gears were kazeemed to be fixed so they were unable to reta. rd and advance when necessary. I replaced them and the problem vanished.

I waited several months because i wanted to be very very sure.

Thank you all for your inputs.

Showboyz:
@com1234

Please boss. I have that problem too. After my intake and exhaust camgear changed due because of rattling sound on cold start. Since then have been experienced p0014.. pls share me your number sir.

What should I do?
Which mechanic you used sir.
Goldencrownmotors@gmail.com

GAZZUZZ:
you startup a modern day vehicle from cold start, it rattles for a few secs (kakakakakakakakakakaa) then noise goes away like nothing happened. No performance issues, no noise. But when ever vehicle stands still inactive for about 5-6hrs and you startup again, you have the startup rattle.

If you have this problem, it is almost certain you have a defective VTC actuator.

VTC stands for Variable Timing control, As engine rpm builds, the VTC actuator - controlled by the engine computer that monitors cam position, ignition timing, exhaust emission and throttle position - advances or retards the intake cam throughout a range , optimizing engine output and reducing emissions.

So in summary, the intake camshaft is not static, but variable.

When defective it rattles for a few secs until a buildup of oil pressure keeps it stable, so basically it's inability to hold oil makes it rattle for a few seconds.

Causes of this defect could arise from the use of wrong oil grades (20w50 people unna weldone) and Defect in production.


Now here's the interesting part of this topic.

Once in a while I used to receive vehicles with very quite engines but re.tarded or advanced timing error codes on the engine computer, after advanced diagnosis we would notice that the intake VTC cam was welded firmly in place it was very common in the corrolas with the 2zr engines, and the honda with the K24Z engines, the symptoms exhibited were a terrible loss of power and correlation codes on timing.

So now that you know, before you buy that Nigerian used car, if you notice any funny timing codes and a previously breached timing cover just know that VTC might be welded in 1 position.

lawlified:


Hello boss. P0014 is one of the codes my car is displaying. I’m not sure I understand how you fixed it. Please help

oweniwe:

com1234:





As stated above, it is usually due to a faulty actuator or camshaft gear in most cases.
If you have a good mechanic, it is simple to solve. I am not based in lagos so unfortunately i can't recommend any.
It is possible that the " new/ replaced" camshaft gear is also faulty.
You should also check that the timing chains are set appropriately. ( I observed that average mechanics get the 2ZR timing wrongly set easily).


Other things that can cause the code to appear....

Incorrect Camshaft Timing
Faulty camshaft timing control solenoid
Failed VVT or VCT solenoid
Clogged oil lines( from oil sludge) to the VVT or VCT solenoid
Low Engine Oil
Low oil pressure
A faulty camshaft position sensor
Faulty crankshaft positions sensor
Damaged wirings
Faulty Timing Chain or Timing Belt
Faulty Timing Tensioner


My suggestion.

Get a good mechanic that understands 2ZR engines.
In case cant achieve the above or you want to try DIY then :

*Check and see if the timing chain is set appropriately ( There are coloured marks on the chain that are used to set this)

*Do active test with techstream software ( if you have one) to check the camshaft gear functions or simply replace the camshaft gears with a good one.
*For sludged engines... Don't forget to clean the oil strainer.