Started the car today and idle was very rough. After driving to work idle was down to rough. Idle is rough and accelerating up to 1500 rpm is rough.

I did just fill up last night - bad gas?

Just trying to see where to start looking.

Thanks

 

Any codes? Vaccum leaks?

 

I have a rough idle as well but I am going to start with the spark plugs since they have about 32,xxx miles on them.
Could be spark plugs, ignition coil, vacuum leak ect ect

 

No codes. Car sounds normal, just feel the rough idle like it is chugging along - only under 1500 rpm. Above that the car is normal.

Very confusing - might change the fuel filter just in case.

 

PCV valve...

 

do the usual. Fuel filter, PCV Valve, clean the Throttle Body and clean the Mass Air Flow with the proper cleaner.

 

What kind of cleaner do you recommend for this?

 

Throttle Body cleaner for the TB and MAF cleaner for the MAF (you can use the electrical connecter cleaner by CRC if you cant find the MAF cleaner) dont use the throttle body cleaner on the MAF.

 

I am also having similar problems recently, rough idle and chugging at low rpms 3rd gear and above. Changed the fuel filter and spark plugs but still this annoying problem persists. It's not a bad injector is it? With the car out of gear and E-brake on the exhaust has a distinct chugging as well, any thoughts?

 

guess i'm gonna have to take care of all of the above since i'm having the same problem plus the CEL on!!!

 

I used electrical contact cleaner and a Q-tip to very carefully clean my MAF and my rough idle went away. Before I did this I had tried new plugs and replaced coils and boots.