Computer problem
1998 Acura Integra 4 cyl Front Wheel Drive Manual 110251 miles
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i have a 98 integra ls, i recently changed the o2 sensors, both before and after cat. that cleared the 02 trouble codes, then i got P0420 and i exchanged the whole exuast system with a new cat.Now i have code P0452, any suggestions on how to fix the problem without buying a new fuel tank sensor which costs around $199.00 and change?

please help!

reset the ecm by disconnecting the battery overnight, make sure the connectors and terminals do not touch to give power to the ecm. make sure that you have a good fuel cap and that it is tight.
re-connect the battery and let he car idle until the cooling fans cycle on and off twice.
let me know if it comes back and if you get the same code.
could also be a problem with the fuel tank's vacuum line but very uncommon.