My car is losing RPM's going down the road

SOURCE: 2002 pontiac sunfire has check engine light

Your problem is typical for these cars. The throttle position sensor is bad. Go to Auto Zone and have them check the codes to confirm this. i've seen this many times, that's usually the problem. It makes the car feel like the brakes are on. Hope this helps. Let me know. Phil

SOURCE: car starts hard chugs going down the road

sounds like timing and tuning. or the carb is sticking

SOURCE: 1998 Pontiac Grand Am GT 3.1 V-6 Engine RPM Surge

might be ur throttle position sensor

SOURCE: Loses power and starts chugging

i think its your computer. but first chek your alternator

SOURCE: while im driving down the

try a tune up first. new plugs and wires. then look at the rods, be sure all the supports are in place. some times bolts come loose, dropping the rods.