1998 Ford escort zx2 running sluggish?

Thanks for taking the time out to read my post. I bought this car about 6 months ago it has 150k on it. When i bought it the owner who is a friend, he showed me all the work he put into it he replaced the timing chain and put a new gas tank and flex pipe.

he told me that the car would stall every now and then but would start right back up and work fine after that during the 6 months the car never backfired didn't have any misfires ran fine. Until one day i felt a hesitation that led to a stall so like my friend said it started right back up and seemed to run fine. Later that day the car was running sluggish / hesitating / misfiring / loss of power.

there was a check engine light that came on I checked it and said my co2 sensors where bad. So i decided to give the car a complete tune up I changed the spark plugs wires coil pack air filter both 02 sensors fuel filter fuel sensor.

after i did all that the car ran fine for about an hr then it was just simply hesitating with a slight misfire so I checked everything to make sure i didn't leave anything loose and everything seemed to be fine. But still hesitating with a low idle so I thought it might be my fuel pump so I changed it with a rebuilt one. After that it ran fine for a few days.

it started again but now if i take a hard turn the car will stall and die so then I changed all the fuses and relays that helped but didn't fix the problem I was told maybe a mass air flow sensor or a throttle positioning sensor?

Sounds like your Catalytic Converter is clogged up. Tap on it with a your palm or a piece or wood when cold and listen for a rattling noise. You can also drill 2 small holes in the exhaust pipe, 1 just before the converter and 1 just past the converter and see if the air pressure out of the holes is about the same. You could also remove the converter and install a test pipe or bypass pipe in its place to diagnose the problem. This is much less expensive then continuing to throw parts at it.

We're expert in providing the sensor, PLC, encoder.
We're not only provide the world famouse brands of servo motors and drivers, but also we can provide the save-cost high efficiency equivalent solutions for you,
If you are worried about that you need some obsoloted servo motor or driver.
We can provide the accurate and workable equivalnt solution for you.
if you would like contact with more details,
Please search as-sensor
Then you will see me
86 13678008827
sensor@esmachinery.com

Tany Ling.
The brands we can provide as following:

Soney, Honeywell, Mitsubishi, Siemens, GE, Omron, Sick, Banner, Panasonic, Balluff, Turck, IFM, keyence, ABB, Gems, Baumer, Schneider, Autonics, Pepperl+Fuchs, IPF, Vti, Gefran, Schmersal, Optex, Fotek, Carlo Gavazzi, Heidenhain, Hohner, Hengstler, Kubler, Leine Linde, Lenord+Bauer, Fraba, TWK, Eltra, Lika, Tekel, Avtron, North Star, Dynapar, BEI sensor, Nemicon, Koyo, LTN, MTL, Copal, Delta, Elco, Hedss, Elap, Rockwell, CEDES, Contrinex, Banner, Leuze, Pinnacle, Reer, Triad, ABB, Toshiba, WAGO, Crouzet, Eaton, Emerson, Fuji, HITACHI, Yaskawa, Beckhoff, VIPA, FATEK, TECO

Would either one of these sensors be the problem? Or what else could it be please help