Hey there. My Infiniti was recently tuned up and has been running great until today. When stepping on the gas, after 25mph the car will not accelerate. The Engine revs but will not go faster then 25. When I turned off overdrive it would go up to 40 before hesitating. Is this a major fix?
I thought it may have been not letting the car warm up enough in the winter weather, but even when warmed up it has the same problem.
Make sure the trans fluid is clean and full. If the engine revs and you don't accellerate, it sounds transmission related. If the check engine light is on, have the computer scaned to see if there are computer codes related to the transmission.