2000 chevy cavalier stalls

my wife’s chevy cavalier has been stalling recently. it usually happens while shifting between 1st and 2nd gear ( it has a manual transmission ). after having the car for two years she had the fuel pump replaced because of similar behavior, however it was mostly taking place on the highway at this time. we’ve looked at several possibilities from the fuel pump, to a faulty ignition switch, tic solenoid to a little hose between the inlet manifold! we would hate to replace a bunch of unnecessary parts and pay for unneeded labor…can anyone help???

Are your getting any CELs (Check Engine lights)?

  A CEL (check engine light) is just a kid in class waving her hand trying to get you attention because she has the answer. You need to have the codes read. Some places will read them for FREE. Try Autozone or Advanced Auto Parts. Get the exact code (like P0123) not just their translation into English and post it back here.

No CELs

If you want to avoid blind part replacement then test things first. You don’t have to guess about a fuel pump. You check the fuel pressure - while driving if you have to. Solenoids, switches, etc. all testable. Intermittent problems can be hard - but then you just have to get more clever.