Rough idle and stalls, codes P0300 and P0014

DUC996

MEMBER
2013 NISSAN ALTIMA
2.5L
4 CYL
2WD
AUTOMATIC
134,000 MILES

It idles really rough and when I drive it it will sometime stall at a stop sign or light. The vehicle will shake while while I. Drive at a light or stop sign. The check engine light came on and I have taken it to Autozone and had it scanned and it pulled up code p0300 for random misfire. It also stated cam sensor failure. I purchased a 2 new cam sensors and installed it but, the vehicle is still running the same. I then went back to get it scanned again and now it pulls up two codes. P0300 and p0014, random misfire and variable valve timing solenoid. I purchased both valve timing solenoid and installed it myself and vehicle doesn’t run better. May I get some assistance on this issue I’m having?

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

The 300 is random missfire.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Did you change the plugs? I would start there.

https://www.2carpros.com/articles/how-to-change-spark-plugs

I would also check the compression to be sure the engine internals are good.

https://www.2carpros.com/articles/how-to-test-engine-compression

As far as the stalling, I would clean the throttle body as a start of all carbon deposits.

https://www.2carpros.com/articles/stall-at-idle

https://www.2carpros.com/articles/throttle-actuator-service

the 14 code is for valve timing. The most common cause is sludge in the oil passages from oil build up over time.

The oil system needs to be power flushed with an acid fluid to get the passages clean. I also attached some fixes for this from different shops.

Roy

4 Repair(s) Available
Verified Repair(1)
Will
07/06/2016 | 09:42:21
I replaced the vvt solenoid and changed the engine oil and filter. I performed a relearn on vvt timing and road tested vehicle. Problems went away and vehicle drove perfect.

Comment(0)
Suggested Repair
Daniel Mckay
06/28/2016 | 15:14:04
Thank you for reaching out to The Community.
I suggest that you check/ inspect the vvt solenoid for sludge.

Most of the time people will put the wrong viscosity oil and set these codes
The Exhaust Valve Timing Control Magnet Retarder (EVT) need to be tested:

Disconnect the EVT connector and use DVOM to check the resistance between terminal 1 and 2; the resistance should be between 9-11 Ohms @ 68*F.

If the resistance is within spec's, clear the codes. If not, replaced the EVT and perform the EVT relearn.

Hope this helps, Let me know what you find or need more assistance.

Comment(1)
The vvt solenoid was nice & clean no sludge. I checked the resistance of the vvt solenoid and it was 7.3. I ordered a new one and the resistance on the new one is the same. Does that sound right?

Will
07/01/2016 | 08:55:59
Suggested Repair
Hans wittlers automotive 121 elizabeth st ne
06/28/2016 | 14:15:11
- Would check Camshaft sensor. Also recommend removing sensor and making sure that the pick up wheel is still attached to the camshaft, as I have seen one come of on a 2014 Altima.

Comment(0)
Suggested Repair
Gary Seybert
06/28/2016 | 13:30:58
I think you should be looking for some type of timing issue > be it one of the sensors or actual timing . Follow diag info for code P-0014

Comment(1)
I'm pretty sure its not a timing issue because it runs great once you rev the engine and it returns to idle.

Will
06/28/2016 | 13:36:49