Hi, I am Johnny from Spain, I got a Mondeo mk4 2.5t petrol from 07, since 2019 I am experimenting car jerks continuosly, when accelerate and when I go in a highway at constant speed, the jerks never follow a pattern, I change oil, filters, reset ECU, spark plugs.....sometimes check engine light got on and then off but never records a constant failure.... Im sure is fuel line problem (gas pedal, some sensors, fuel pump) but 5 mechanics didnt find the problem, so 4 years of this got me upset
Car Jerks dissapear when I change gears manually, and sometimes happens again a moments later, but when I dont change gears, jerks got worse and sometime gas pedal did not works and got me to a point where the car even shut off and force me to park and wait 5 minutes till the car turns on again
Pd: sorry for my english
Edit: I dont have them, My mechanic said that both time he checked the car gaves different codes.
other mechanic said the code he got was gas pedal and a sensor, I cant remember if it was CKP o CMP Sensors.
Can you please have the vehicle scanned and post all the stored trouble codes here?
Yeah, we could use the codes to get a better analysis. But of course change the fuel filter and have the fuel pump pressure tested and volume tested. A weak fuel pump will do exactly that their electric pumps as they age they can get a bit wonky and when the pressure gets too low it'll jerk and when the pressure goes back up it'll go normal
