Chysler Sebring Fault Help Please

[Grandy]

we got the sebring 5 months ago it is a 2007 2.0 petrol vvti engine.

 

I will explain what happens and what I have done to try to fix it.

 

first thing in the morning when it is cold I start the car with no problems and it ticks over grat at around 800 rpm.

if you press the accelerator it starts to cough and splutter and rough ild but if you then floor it to over 4000rpm and let if go down again the fault clears for the day and you can drive stop start no problems then the next day the same thing happens again.

 

I have removed the throttle and cleaned it with carb cleaner and a wire brush and replaced the air filter, temperature sensor and removed all other sensors and cleaned them. also changed oil and filter and spark plugs. 

 

any ideas please

thank you in advance