2002 nissan sentra se-r 1.8 liter ticking noise from front, loss of power in acceleration between 35-45 mph and uphill, "pop" noise when decelerating between 2000-1500 rpm. 145,000 miles, mostly highway. recently replaced muffler nad exhaust hangers. also headlights low and high beams won't work, but emergency flashers, parking lights and brake lights are fine. fuses are all ok.

Take extra caution while performing dirve cycles on public roadways. Drive cycles can be difficult to follow under normal driving conditions. Begin by: - Start the engine. Idle the engine in drive for two and a half minutes with the A/C and rear defroster on. - Turn the A/C and rear defrost off, and accelerate to 55 mph at half throttle. - Hold at a steady speed of 55 mph for three minutes. - Decelerate (coast down) to 20 mph without braking or depressing the clutch. - Accelerate back to 55 to 60 mph at ¾ throttle. - Hold at a steady speed of 55 to 60 mph for five minutes. - Decelerate (coast down) to a stop without braking. If all other emissions systems are functioning properly, completing the drive cycle above will set the "readiness flags" required to pass the smog check. It will not hurt to perform the drive cycle 2 or 3 times before the smog test.

Wheel nuts loose, or stones in hub caps, do you get the noise rolling down hill ? , if not its engine, retrace your repair.

Have the Mass Airflow Sensor cleaned

switch tiers front to back stabilizer bushing my bad axle made a constent grinding popping clicking type noise

lOOK BEHIND THE GLOVE COMPARTMENT. Compartmet is probabily plastic and all you have to do is push in real hard to get them past dash board.

Nissan QR 2.5 engine produces a torque of 180 ft·lbf (244 N·m) of torque at 4000 rpm .

sounds like a computer module problem . have the computer diagnostic scan done at your nissan dealer. good luck mister bill

I have the same car and I know there was a TSB for the ECM . I know the ECM issue has cause some cars to stall while driving

you will have to take the whole front of the motor apart. it should be alot easier to go through the fender well to do this.

remove the front 02sensor and drive the car like that, remove means complety take it apart from exaust, if problem goes away or gets so much better then your catalitic converter at the exaust is restricted and need a new one