2003 WRX Pulsing
 

My 2003 WRX has started pulsing if you are keeping a steady speed anywhere between 2000 - 3000rpm the car feels like its pulsing,

I have wd40 the throttle cable, Were else should i be looking??

Ive also noticed when starting it sometimes in the morning it goes to start then sounds like it won't then it starts, sounds a bit lumpy for 30 secs and its fine??

anyone

No error codes or CEL?



Jura

No mate nothing at all,

I was told possibly dump valve but its a standard OEM part

I don't know were else to look

Anyone??

Help please

Boost solenoid needs cleaning possibly? Search it on here.