So today I replaced all of the hoses under the air filter housing and the one coming from the throttle body too. Throttle body was filthy. I used new gasket when I put back the TB too.
So after the job was done, I let the car idle for 10 min- perfectly fine. Than I drove it and after maybe 10minutes it started acting up. First it started slightly lurching right before I come to a complete stop and when I am pulling away from a complete stop.
After that I put the car in neutral, car idling started going up and down from 900 to 1400. When I put in reverse and back to N car kind of slams into gear and idles the same way. I left the car in neutral or park and car was ideling at 900 and when I would depress the brake it would jump to 1300, I repeated few times and than stopped. When I got out of the car I can smell burnt rubber or plastic.
What can it be? Some hose got loose? Maybe TB gasket? Can it also bee the TB wiring, is that one bio gradable too? MAF?
I really dont know what it is and I just changed the harness recently and car worked great until today.