Unknown problem after some work i’ve done, please help

im confused which one is it, because i took out one connector at the side and 4 bolts before removing throttle body

 

Sorry I didnt understand what you meant

 

Sorry But i didnt understans what you meant

 

im confused which one is it, because i took out one connector at the side and 4 bolts before removing throttle body

 

The problem now seems to be fixed,

I have bought a used EGR Valve + Cooler and replaced without cleaning them or unscrewing something, the question now is how to properly clean EGR Valve without damaging it
like I did

I didnt touch the throttle body, only EGR valve + cooler

 

Maybe I could have damaged the Cooler because i used with really strong pressure ?

 

Doesnt make sense, look.

1. Everything was working nice but I wanted to do cleaning before problem appears since its a car i have recently bought

2. I Bought additional egr valve + cooler and cleaned them ( when cleaning I unscrewed the two bolts of egr valve electronic part, one bolt has broke, inside was spring with bearings) I put back together and went on

3. I replaced the old egr + cooler with the ones i have cleaned and shiny

4. when I took off old egr + cooler I decided to check the inside how dirty it was out of curiousity so I unscrewed the two bolts of which one broke again

5. after puting everything back and starting the car the problem appeared

6. I deciced to put initial egr cooler + valve (dirty) back thinking I might have done something wrong when cleaning this way damaging the parts, That didnt help because engine was still not running good

7. I bought another set of egr valve+ cooler and i just replaced them without cleaning or unscrewing anything and this solved the problem.

I highly believe that by opening the electrical part with bearing spring I might have done something wrong

When I come back, I can take a video and share it so you understand exactly what I did, ok?