99 I30 issue

[EricFNJ]

Took my 99 I30 to get inspected and was failed because it threw p0100 and p0153 codes. So the MAF sensor and O2 sensors are causing these codes as far as i know. I took the MAF off and it looks extremely clean so i didn't bother cleaning it. If the MAF is bad would it casue the o2 sensors to throw that code? What is the best course of action to correct this? The car idles around 1200 and is not steady. It hesitates when trying to accelerate intermittently. THANK U

[EricFNJ]

up

[Kompresshun]

Check the plug and the wires connected to your MAF first, because sometimes the wiring can be faulty and cause the MAF to not function properly.

If that doesn't seem to be the issue, I would go ahead and plan on replacing your MAF and the O2 sensor as well. The MAF is the likely cause for the idle and acceleration issues though, but you probably won't be able to get around replacing the O2, so i'd go ahead and do them both.

[loystock]

Most of the time, a failing MAF sensor will not even throw a fault code. This time, you have P0100 and that definitely indicates a bad MAF sensor (or related harness). But there is no harm in checking the wiring continuity from the ECM to the sensor before replacing the MAF.

Have you noticed a rise in fuel consumption? This can be attributed to a failing MAF sensor. Unfortunately, if this condition goes on for extended period, unburned fuel will contaminate the O2 sensors and catalytic converters, causing premature failure.

Refer to the link below for more info about the trouble codes.

http://www.nicoclub.com/FSM/i30/1999/ec.pdf