Isentropic

Good Morning everyone,
Hope all is well/safe. I have recently been having a rough creep (1st gear) at a stop light and low speeds. It also hesitates to accelerate when I press on the gas pedal. I also hear a road noise when ~45-50 mph, which I thought was tire noise. I had the tires balanced yesterday, the tires look fine according to the shop, but the noise is still there. The check engine light is also on (attached picture with codes).



1. Could it be a bad ignition coil?
-I changed all spark plugs 20k miles ago, but not the original coils.
2. Could it be a transmission/torque converter problem?
-I did have the fluid changed about 1.5 years ago.

I would greatly appreciate any suggestions. Thanks very much.

machadosl

I think you ave at least 3 problems, one is with the evaporative emission control, it may be clogged or broken an this is the reason for P0455.
Another one, relative to code P0410 is the secondary air pump of the engine, it maybe bad or the catalyst is getting clogged, so its important to verify the secondary air pump, the auxiliary air intake change over valve, the canister pump valve and the canister, the bypass valve.
And finally, the error P0016 and P0017 are relative to the camshaft position sensor located un the upper front of the engine, in your case I think it is relative to the left side sensors of the engine.
Maybe the error P0410 is being promoted by the P0016, so start verifying those sensors.
I wish you luck in this repair.

DennisG01

Start by deleting all those codes and see if that immediately changes drivability and/or how long it lasts. Then, see what codes come back.

Max Blast

Two issues; check engine light triggered by a P410 is because your secondary air pump isn’t blowing on startup to get the cats up to operating temp within a certain time limit, but has no effect on your engines perform once it is warm. So the cat codes may likely stem from that low temperature condition m on startup. Once the system is up to operating temp they’ll function as designed.

Issue #2; if your driveability symptom occurs when warm, these codes aren’t causing it and so are not related.

I’m thinking torque converter shat a blade or your transfer case chain slipping.

check for any cracking in flex discs as well.

Isentropic

Thanks very much for the suggestions; I really appreciate it. I went ahead and replaced two ignition coils today (cylinder 2, 6). It idles better now, but there is still some hesitation to accelerate. Perhaps there may be an issue with the torque converter or transmission fluid, as suggested. I also cleared the codes.

After driving for about half an hour, the CEL engine came back on. I already know there is an issue with the timing chain, because the dealer told me it was likely stretched when I went for a diagnosis three months ago. That is probably a separate issue, issue.

DennisG01

Hopefully, at this point, you will now only have one or two codes that will help point you in the direction of the system that is complaining and causing the code.

Isentropic

Thanks very much for the help everyone. Since the torque converter and transfer case was mentioned, I do hear/feel a "clunk" noise soon after driving the car forward (doesn't happen all the time, but ~15-20% of the time). It occurs occasionally at stop lights too. Could this be the transfer case chain slipping or something with the torque converter?

Thanks very much again.

machadosl

Can be two things: the driveshaft or the transfer case. First try changing the transfer case oil.

Isentropic

Thanks very much, I will try to look into this as suggested.

Isentropic

Thanks very much; I just changed the transfer case and both front + rear differential fluids today. Hopefully it drives smoother now, Amn. I am debating how much more I should do, considering the vehicle is at ~224K miles now. I guess I will just keep driving it iA.
Thanks much again.

Replacing the bad ignition coil.