idling rough

[Mazdaspeedpro10]

this just started a few days ago, but when i cold start my car its fine but when it gets hot It has this really rough idle. Once it wamrs up and i drive around town, it will still shut off at when i come to a stop. It won't always shut off but it has that rough idl and tries to. I have to put the car in N and gas it. Once i get going the car is fine? o yea no check engine light?

 

[mazdaspeedp]

wastegate

 

[Mazdaspeedpro10]

wastegate is brand new

 

[mazdaspeedp]

lol my bad. well is your exhaust manifold in good condition? cuz maybe if it has a crack once it heats up it is making it run bad

 

[powderider87]

Well if there is a crack and it heats up usually it will expand the mani and seal up ( my previous 2 manis did this) I would say wastegate too first, but now i will say EGR.

 

[Mazdaspeedpro10]

my exhaust manifold is in good condition and i have no check engine light like really this car is makin put on fire

 

[powderider87]

Egr

 

[jms-msp]

i agree with powderider87, try taking off the egr valve and pipe and clean them with carb cleaner or some type of cleaner. could be carbon build up. i did it to my intake manifold, egr and the tube and wow what a difference. oh yeah, sea foam that mother too.

 

[Mazdaspeedpro10]

i just replace my EGR and its not that it was my intake mainflold gasket thanks for everyones HELP!

 

[HighSpeed]

so the gasket wasn't sealing?

 

[Mazdaspeedpro10]

it was cracked on the belt side