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View Full Version : No CEL/No MODS/rough idle ???


Jigga2-3L
08-10-2009, 11:29 PM
Here's the deal...I got an 04 mazda3 no mods, no CEL and I am having rough idling problems along with poor throttle response in 4th and 5th gear...any thoughts????
Donutz
08-10-2009, 11:32 PM
Manual or auto? 2.0 or 2.3L? And, have you had the car since 2004 (I.e., are you the original owner?). Also, what kind of maintenance have you done?

BTW, welcome to TM3!
em3
08-10-2009, 11:37 PM
I think hes a 2.3L as his name states ;)
Jigga2-3L
08-10-2009, 11:39 PM
ok..bought the car 2 years ago..its manual GT never had any problems until now..it has 118K I also did a tune up..about a month ago..and I thought that would solve the problem...guess not
Flagrum_3
08-11-2009, 08:20 AM
When you did the Tune-up did you have the throttle-body cleaned?


_3
Jigga2-3L
08-11-2009, 02:42 PM
When you did the Tune-up did you have the throttle-body cleaned?


_3

yep!!!!..the only thing i could think of is clean the maf..
dsichewski
08-11-2009, 05:28 PM
spark plugs???
Jigga2-3L
08-11-2009, 07:42 PM
spark plugs???

yep
dsichewski
08-11-2009, 07:55 PM
:)
Jigga2-3L
08-12-2009, 10:52 PM
Ideas anyone...
Donutz
08-12-2009, 10:56 PM
I was thinking dirty maf or spark plugs. How about a vacuum leak? Resident experts; would this cause rough idle?
Flagrum_3
08-13-2009, 07:39 AM
I was thinking dirty maf or spark plugs. How about a vacuum leak? Resident experts; would this cause rough idle?

Definately and whilst researching a CEL I had; Apparently our vehicles are prone to vacuum leaks.....(Hard to find sometimes as they can be quite small).


_3
hatthi
08-13-2009, 08:44 AM
I had a similar issue with my previous vehicle. It turned out to be a vacuum leak. The gasket around my throttle body had a hole.


Definately and whilst researching a CEL I had; Apparently our vehicles are prone to vacuum leaks.....(Hard to find sometimes as they can be quite small).


_3
mzkaye729
08-13-2009, 09:20 AM
I had a similar issue with my previous vehicle. It turned out to be a vacuum leak. The gasket around my throttle body had a hole.

Would this type of problem be noticed when the car is in for throttle body cleaning service ?
Jigga2-3L
08-13-2009, 12:23 PM
wouldnt a vacuum leak cause the cel to come on???....
hatthi
08-13-2009, 09:56 PM
Would this type of problem be noticed when the car is in for throttle body cleaning service ?

Depends on the mechanic I guess.
hatthi
08-13-2009, 09:58 PM
wouldnt a vacuum leak cause the cel to come on???....

Depends on the situation. I had a light come on at first. My IACV was bad. That was replaced and I still had issues but no CEL indicating a problem. That's when we found the gasket leak.