Hi everyone, it's been a few days now that my car has been having a problem: when reducing the speed to either stop in a traffic light, at a stop or anywhere else, the vehicle stalls. Revolutions reach 300 per second and it stalls. This does not happen all the times, there are cases in which revolutions go high until reaching 900 per second and it stabilizes. Does anyone know which the cause might be? Both the filters and spark plugs of the car are new.

Recently ourchased this unit. Had jump to get unit to crank. Then when driving home not even mile - Mile and half came to stop sign and didnt shut off just wouldn’t drive. Patted throttle reved up was all after few moments it went back to accelerating. Did this process about 6-8 times in a 6-8 mile distance. Now want crank even with cables jumping. Looked at fuse box under hood driver side missing a lot of em