I have a '05 rx-8, manual, has 74,000 miles. I bought the car a few months ago, car ran really strong , all was good till a couple weeks ago wen i went to pass a car it cut out and and jerked hard, got around the car it seemed to even back out, then a couple days later it started agian, only this time it would keep doin it till i had to pull over and then it would start to jump up and down on the rpms in idle and then shut down completely. After sittin for a few min it would start back up, run fine for a bit and then do it agian. i was told to replace the mass airflow sensor , so i did, still the same problem. its showin no engine lights, and all that it reads is a misfire code, does anyone hav any idea what might be causing this to happen? The nearest mazda dealer to me is well over 2 hours away, which would make one hell of a tow bill, so before that has to happen any help would be greatly appreciated

 

HHmmm...
Car is having acceleration issues. Car is misfiring once warm. Car is not holding idle well once warm. Car has an illuminated CEL which OP believes relates to a misfire. Geee, what could it be? Maybe a misfire?

When were coils, wires, and plugs last changed?

 

just recently purchaced the car, have no idea when anything was changed. its showing no cel light, just wen hooked to computer it reads misfire codes. after reading all these post on here i beleive the coils, plugs and wires to be the problem, having the mileage that it does, and seeing that the oe coils seem to be not all that great, so ill get em all changed out and hopefully thats all it is

 

Yes, you do that. Update us with the outcome, and it should be good news by then...good luck.

 

Try just plugs first, new plugs make a huge difference, then you can still go for coils if the problem remains.....

 

Goin to order the whole package from Mazmart tom, gotta love pay day. figured id go ahead and change it all so its all takin care of, and take a few things off the to do list. Thanks for the help, and as soon as i get em in ill give you all an update on it

 

well i got the plugs, coils, and wires in and still the same problem. guess im gonna have to tow it into mazda. anybody got anymore suggestions on wat it might be. car starts easier now but as it sits and runs for awhile and warms up it starts jumpin up and down on rpm and eventually just dies. having problems with keeping the battery charged in it to