What could be causing my 02 Nissan Sentra to restrict revs then stall at highway speed?

SOURCE: 91 nissan Sentra losses power at highway speeds

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

SOURCE: 95 maxima rough idle

The injector could definitely trigger a misfire code, but you also mentioned that you had a mass airflow sensor code , that code code be responsible for te sluggish moment of the vehicle and rpm going up and down. However if you have a misfire onCyl#6 and the coil and the plug is good the ONLY other thing to cause a mis-fire would be the injector. To check the injector get a NOID light, you can get one at almost any auto-parts place. To use unplug injector plug from the bad injector and connect it to NOID light the light should have a steady PULSE/ligt flickering. If light flickers fine then injector is bad and will need to be replaced. If light doesn't flicker or flickers intermittently then you may have a bad wiring to that injector. Check if wiring is good, then you may have a bad cam sensor or sensor gear. Good Luck and contact if you need more help. Thanks for using FIX YA

Colin Stickland

• 22516 Answers
• Posted on Mar 31, 2009

SOURCE: 2004 Nissan Sentra 1.8 Crankshaft Sensor

difficult to diagnose withoutcar in front of me,best advice is what i said to another woman with a merc--get dolled up to nines and go to a local repair shop and start crying ,always works unless your unlucky enough to get a *** mechanic,and after 40yrs in trade their are not many *** mechanics that i have worked with,weird ones yes but ***?? Or take vehicle to nissan agent as the mechanics their will have product knowledge of the make and should be able to diagnose it in seconds.This is favourite of mine and that is if a particular model is playing up i will try to get into workshop to ask mechanics ,failing which i wait in local cafe at breakfast time and try to collar one their.

SOURCE: i have a 2000 nissan maxima and the problem that i

Idle air control valves short out all the time on these models. You can ohm the motor to check it, but the down side to a shorted iac valve is that it shorts out the ecm if not repaired quickly. when the valve shorts, 12 volts is supplied directly to the ecm and burns the circuit board. The other option is the air flow meter, this is also a very common problem but typically a p0171/p0174 would be stored in self diag.

SOURCE: My 2000 Nissan Sentra GXE has 143 k miles.

If the transmission OD (overdrive) light is on or flashing, it means the transmission controller has diagnosed an internal transmission fault. To diagnose the problem, a scan tool that can read transmission codes must be plugged into the vehicle diagnostic connector (usually located under the dash near the steering column). The scan tool will then display the transmission code(s) that turned the warning light on. What happens next depends on the code. If the code indicates an internal performance problem, the transmission will probably need the attention of a specialist. But if the code indicates an electrical fault, a bad sensor or solenoid, you may be able to fix the problem without having to take your vehicle to a transmission shop. Hope this helps.