i have 03 acura 3.2 cl type s 6 spd, car ran fine yesterday, started today and misfiring sluggish and even exhaust sounds different- check engine light came on and check codes- p300-p306,p1399,car has 137k on it, had timing belt replaced at 105k, any suggestions? i replaced plugs w oem ngks

 

first i thing i would check is coilpacks unplug each of them when engine is running the one that doesnt change engine sound or doesnt affect anything is the one that is bad... if that doesnt help check the compression on the cylinders

 

Check for a vacuum leak. Check the Intake Manifold on the driver side to make sure all hoses are attached. I had the same issue about yr ago. The Car was running fine with no CEL for about 2 hrs(Dallas) and about half hour from (Houston) the CEL suddenly came on and car began to drive crappy. I took it to Autozone to get it scanned and got the same codes you listed.

 

i blew motor and i had same codes

 

Did anyone find a solution to this yet, my car was fine when I shut it off and crap the next morning? I've cleaned out all the egr ports, just put fresh plugs in it. I don't really have the money to take it anywhere right now?

 

Anyone in this forum have any luck with this? My timing belt popped and I put it all back together. I did leak down tests and the like and didn't seem to bend a valve. After I got it all back together I had to replace the IAC and it ran fine but noisy for a lil. CEL came up for cyls 1,4,6 (sometimes all 6) and the p0300 and p1399 code. I adjusted the valves, but same results...

 

One does not get away with snapping a timing belt on these engines.

 

Spark plugs, coil packs and/or bad gas...

 

I had the same miss fire codes last summer. I have an Acura CL 3.2 S type with 132,000 miles. I used the advice of this forum and found a bad coil pack by disconnecting one coil pack at a time. The one that made no difference in performance was the bad one. Just couple of weeks ago I had the same faults appear. I did the same test with the coil packs but I could not detect any change. I change the plugs to NGK type and all my problems went ago. Good Luck !!

 

Check coils.

 

I have a 03 Cl s type and it started out with a bad 02 sensor and a ckp sensor .. I changed both components out and the car was able to go higher than 2ooo rpms until it warmed up then it wounldnt go higher than 2000 rpms... I changed out the spark plugs and now the dlcs are now what this guys are .. I'm at a loss and could use some help. Thanks

 

Just to clarify, when you state that you changed 'both components' I'm presuming that you mean the bad o2 sensor and the crank sensor A on the pulley side of the engine, correct?

Did you change the crank sensor B, on the transmission side of the engine, as recommended, on your original thread below, by Adam Kovach?

https://acurazine.com/forums/2g-cl-p...n-sens-959496/

 

Yes correct

 

As far as ckp sensor b, I checked continuity via the manual, and everything seemed fine! Do you think I should still change sensor B out?

 

^
It's worth a try, make sure you get an OEM one. If that does not work, unfortunately the next step is a new ECU.
Or take it to an acura dealer and have it diagnosed.