Chevrolet Repair: tbi troubble, throttle position sensor, best bet


Question
HI Steve  im not used to englisch but i will try.  I have a 1990 chevy silversdo 1500c with 350tbi engine, the problem i have is that when i`m crousing at normal speed the engine suddenly lose power, i step on the gas but nothing happens, it don`t respond to the pedal, the speed is the same , and as suddenly as it lost power it comes back on, a new fuelfilter, i workt thro vacum possibilitys, fuel pressure is ok, hope you can help  regards  pehr

Answer
have the TPS checked or change it yourself if you with, the TPS is the " Throttle Position Sensor " and can cause the problem you are having, another possibility is the ECM itself is starting to go bad, your best bet for something like this is going to be to have it professionally checked out, hope this helps