2001 Nissan Sentra Two codes P0430, P0175

2001 NISSAN SENTRA
145,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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BIGGE
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My car started shutting off at idle, but would crank back up. One mech changed O2 sensor Bank 2 sensor 1 and also plugs. Car still ran rough, took car to another shop and they said catalytic converter was clogged, I did not fix but took it to Nissan dealer for further inspection they could not find codes but did a fuel and air cleanup, car ran good for 300 miles and still do but Im getting two codes now, P0430 and P0175. but car is running good
Nov 25, 2013 at 3:51 AM
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JACOBANDNICKOLAS
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Is the engine running smoothly now? I also need to know what size engine you have. Have the techs checked for vacuum leaks? Does the light ever go out?
Nov 25, 2013 at 6:09 AM
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JACOBANDNICKOLAS
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I forgot to ask... has anyone checked fuel pump pressure and the injectors?
Nov 25, 2013 at 6:11 AM
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BIGGE
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the dealership did a check but I don't know if they checked fuel pressure, the car is running good for now, I reset the codes and it ran about 20 miles then the light came back on, Im fixing to check what the codes are this time, the motor is a 1.8. Checked codes and now it is P0420 and P0430. Pulled hose off vacuum hose off of fuel regulator and there was nothing leaking out of hose
Nov 25, 2013 at 11:07 AM
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JACOBANDNICKOLAS
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When you removed the hose, did the pressure increase?
Nov 25, 2013 at 5:13 PM
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BIGGE
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if it did I could not tell engine idle did not change, I could feel vacuum from manifold side
Nov 25, 2013 at 7:45 PM
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JACOBANDNICKOLAS
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I would have thought it would have changed.
Nov 26, 2013 at 5:50 AM
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BIGGE
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I tried it again and nothing changed, I can hear air sucking from manifold
Nov 26, 2013 at 10:58 AM
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JACOBANDNICKOLAS
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I would have it checked.
Nov 26, 2013 at 5:01 PM