JTS Rough running after MOT
I took my 156 veloce 2.0l JTS for an MOT this morning which it passed, but the garage said that they had to push it off their ramp as it would not build up enough revs following the emission test. I also noticed that the temp gauge was reading about 110 degrees, this despite the temp is usually at a rock solid 90 degrees since new thermostat fitted last month. The engine management light is also on now. The MOT garage plugged in their computer and it flagged up throttle response issues which I've never had before this morning.
The only other factor that could have any bearing is that I gave the car a dose of Redex petrol system cleaner last week and was wondering if perhaps the revving at 2500rpm could have dislodged a bit of carbon.
Any suggestions would be greatly received as up until this MOT the car has been running sweetly.
I've parked the car to let it cool down a bit and will see what happens later.