20 Most Recent 2004 Nissan Sentra 1.8 Questions & Answers

Have you had the exhaust flow tested? Especially the catalytic converter?

When it losses power have a fuel pump pressure gage hooked up, it may be the pump is badly worn and it is losing pressure after it heats up, have seen this many a time. Also run a fault code test on the engine control computer using an OBD2 code reader.

P1273 Nissan P1273 Nissan - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1 Possible causes - Faulty Air fuel ratio (A/F) sensor 1 Bank 1 - Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1 - Fuel pressure - Faulty Fuel injector - Intake air leaks - Faulty Air Flow Meter Most probable is you have a bad heater in your upper bank 1 O2 sensor. Replace all of your O2 sensors. Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgP7CTD8 Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgOwiMU8

code p 1273 refers to heated oxygen sensor (HO2S) 1 --lean mixture === causes --the HO2S sensor --fuel pressure , injectors , intake air leak ( faulty vacuum hoses to brake booster or dash vent controls ) I would start at the HO2S sensor as that would be the most probable unit that fails It is the one before the cat converter or in the exhaust manifold

P1273 Code Nissan Xterra Air fuel sensor Lean shift. Live ...

? 1:24 www.youtube.com/watch?v=rbgCdagdeEE May 4, 2013 - Uploaded by momoy02 2005 Nissan Xterra MIL ON P1273 air fuel sensor LEAN SHIFT.... what is the meaning of the Data and how to ...

Vacuum leak? Bad or dirty idle air motor?

Crank shaft sensors often fail without triggering a code. But in its early stages, a check engine light may be on. Symtoms of a bad crank sensor are: poor acceleration ( lack of power ) rough idle, ETC. sometimes you may be able to start it normally, and other times it takes 3 or more times. If the check engine light is on take it to a auto parts store and thy can read the code for free. To tell if that's the problem. God-Bless!

Did you replace the cat under the car or the one in the exhaust manifold? Is the check engine light on or flashing. Does the car run the same with the new converter?

Fuel filter is part of the fuel pump meaning you have to replace fuel filter and fuel pump as a assembly.

If the plugs and wiring are ok! Try changing the fuel filter. A clogged up filter will bog the car down, and it may also quit at stops. No power on hills ETC. God-Bless you! and your family.

• P0732 Nissan - 2nd. Gear Malfunction
• Check transmission fluid level and condition

you seem to have asked this question a few times, what is this valve?? to do . Is it vacuum? emisions?EGR? PCV ? Braking system? Just a little more specific, is there a Part number or do you have a picture??

Your talking about the interior blower? If the first 3 settings don't work, you have to replace the blower resistor. The relay is a different story. Though the relay could be built in the resistor. I'm thinking this is not your case. The resistor controls the speeds of the blower, until it gets to high. Then the relay kicks in to give the blower full power. I would say replace the resistor. I good thing to remember is, If you get any speed from the blower, the resistor is bad. If you get nothing,check the fuse, replace it, if it blows again, replace the blower. If the fuse doesn't blow, then start looking at the controller and wires. This advice goes for all makes and models.

There are three basic items that make a car engine run - ignition, fuel and timing/compression. If any of these are missing or bad, the engine wont start. To check for ignition, pull out a plug wire (any one) and place a metal object such as a smallish screwdriver into the plug cap, hold the metal part of the object near a metal part of the engine then have someone (the trouble and strife will do) turn the engine over. If the ignition is OK, a nice blue spark should pop from the metal object to the engine. Keep your hands away, the spark reaches upwards of 26 000 volts, not enough to kill you, but it can spoil your moment. To check for fuel, remove the fuel line from the carburettor and turn on the ignition for a second. A good stream of petrol should spurt from the pipe if you have an electric fuel pump, otherwise crank the engine to let the mechanical pump work. Finally, check for compression. Remove a spark plug, block the plug hole with a finger if possible, then have someone crank the engine. The compression should attempt to blow your finger out of the hole. Compression is dependent on good timing. If the compression is bad, you could have a broken timing belt, a blown head gasket or a number of other nasties.

CV joint? Is it louder when turning?

Did you check for fuel pressure at the motor? Timing Belt jump teeth ?

Well, it pumps water through the engine pulling the heat out of the engine and getting rid of the heat through the radiator.

Check for spark on any spark plug wire. If you have a strong blue spark, the ignition system is probably good, so then check for gas-is the fuel pump turning on for 2 seconds with key on, not start? It should and that will put gas up to the engine. If you don't hear the pump turn on briefly to pressurize the line and fuel rail (where the injectors are), you will need to troubleshoot the fuel pump circuit. Check the fuel pump fuse-probably under the hood in a fuse/relay block.