Stalls when driving?

Engine Performance problem
1997 Mazda Protege 4 cyl Automatic 131.00 miles

after I had a taken the car to the dealer, done a tune up, coil, distributor, one fuel injector replaced, and the computer, still I come home and the car have the same symptoms, runs better do, I had an engine light come on, it is the egr valve, I took it out cleaned, replace the hose and the gasket check, replace oil filter transmission fluid and pcv valve, while I was at it, the first test was I put back the platinum plugs, when I turn the engine on the lengine light went off.I test and drives almost the same but as before but stalling and esitating, I put back the nkg regular plugs and it runs better no stalling or choking, do you think the egr valve is bad or it could be someting else, it only gets worse when I put the platinum plugs brand new, but sometimes the car is running and it does a stall, almost fells like a small cough.I had a nightmare with the mazda dealer they charge me about 800$ and the problem it is still there, aprreciate your proffessional opinion, any help is appreciated. Thanks jack

I have owned this car for about 4 years and haven't had too many problems with it. It is easy on gas and with today's prices this is an issue. However, a few weeks ago, it started to not idle when waiting at a red light or even a stop sign. It would run just fine, but when you had to stop somewhere, the motor would race up and down like it wasn't idling right and would then die. I would throw it into neutral and things would be okay but last evening, it started "jumping" again and this time it totally died. I couldn't get it to start again. When you turn the key over, it acts like its out of gas, however it is not, just won't start. I was thinking that it may be the fuel filter but am not sure. I lost the manual book and do not know where it is located. Any suggestions?

The car doesnt seem to be overheating or anything like that. It died and wouldnt start again. Went out next day to try to start it and it did. Im too afraid to drive it anywhere because I dont want to be stuck on side of road with my kids. What are you suggestions on what to look at? Plenty of gas, good spark, fluids are topped. Car smells like gas really bad when it is running.

1996 Mazda Protege 1.5l. My car starts fine but when you put it in gear to take off it won't pick up speed, when idle it runs fine. I try and take off and it will barely pull or not pull at all. I have changed out the fuel pump, fuel filter, fuel pressure. The mechanic has changed out everything. He said the problem is electrical.

All these things have been checked.

He checked the exhaust system and catalytic converter, he said it wasn't those things.

My 96 protege just shut off while driving pretty sure the fuel pump is working but not sure its getting fire to the plugs any ideas

He changed the MAF, that is what the diagnostic test said it was, but it wasn't that. I will ask about TPS sensors. When he pinches off the fuel return line the car runs fine.

Its not getting spark but is getting fuel

He changed the fuel pressure regulator.