My car over the last 2 months has started losing acceleration mainly when I've slowed down coming to a junction. Sometimes even losing acceleration all together. My car doesn't cut out I have to turn it off for 5 mins and back onthen it's OK. But does this intermittently sometimes going days between. No engine management light comes on. I've had it in garage had a new fuel filter dpf clean and a new solenoid seemed to have worked until today its happend again. I've also had it in suzuki garage and they cannot find anything wrong just told me they have to be there when it happens to find out what it is. Its stressing me out as it doesn't happen all the time