94 chevy cav. after driving for a while, the car shuts off when u break. it will start back up but stalls as soon as you put it in a gear. let it sit for half hour and it will drive again for a while then starts the process all over again. any suggestions?

Hello. Your car might have a 'cracked' vacuum hose that goes to the fuel pressure regulator. If that's the case, the engine will 'flood' and won't start. It can also be the fuel pressure regulator itself. One more thing: if the torque converter is malfunctioning, that will stop the engine as soon as it is put in any drive gear. Good luck and keep me informed; if you want to.

Have ODBII codes read and post here.

is the check engine lite on need codes could be anything from fuel issues to electrical issues

It sounds to me like you are having a problem with your Idle Air Control motor (IAC) Also known as AIS motor. See picture below.

throttle position sensor can cause the high idle as will a hole in the egr valve tube as far as stalling as soon as u put in to gear could be torque converter not unlocking but id check the egr tube first

pull off the transmission transition switch wire pluged on to tranny
start car drive should be fine never hook op again 0 money
or pay 700 dollars to install a new one
or buy switch pull tranny and install your self

I would recommend replacing the in-line fuel filter

check the park switch for wire problems

Have your transmission oil filter changed;
it is located under the transmission pan
The oil is what makes the transmission shift
When you shut off the engine it stops the transmission pump then when you start up again the transmission shifts until the filter clogs again

Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.