I have a 2008 Nissan Sentra Base model, and I bought a fitch fuel catalyst for it. However, when I went to get it installed the place told me that the connectors that came with the kit were for the old type of fuel line connectors and my car has a newer style of connection. I tried the get the size and pitch of the fuel line connectors from nissan so that I could relay that to Fitch or another company to make hoses with proper fitting connectors, but nissan couldn't tell me that information. Someone should be able to tell me this information. Can you help?

Question edited for clarity.
Question moved to model category.

'95-'99 Nissan Sentra Fuse Box Diagram

https://knigaproavto.ru > shemy > 720-1995-1999-nissa...

Oct 27, 2018 - Fuse Panel Diagram Nissan Sentra Base, XE, GXE, SE and GLE (B14; 1995, 1996, 1997, 1998, 1999)

Sensors come in different qualities and pricings. Some cheap ones made in Mexico fail in a few days. Always buy OEM quality sensors.

Your code is incorrect fuel mixture, sensor says running lean so it is dumping extra fuel.

Fuel Trim System Lean Bank 1

The code is thrown when the oxygen sensors detect that there's not enough oxygen in the exhaust system. This is commonly referred to as a "lean" condition.
The vehicle's ECM will add more fuel to the mixture in order to bring the air fuel mixture where it needs to be for optimal combustion. It also throws the code P0171 to let you know that it has done this.


Here are the typical symptoms that something is wrong when you have code P0171.

• Mileage- may or may not suffer depending on how much the air fuel mixture has changed.
• Misfire- If the air fuel mixture has gotten too far from factory specs, this can cause the Sentra to misfire.
• Idle Issues- With the air/fuel mixture altered, the vehicle can idle erratically as the computer compensates to keep the engine running.

https://www.google.com/search?q=Nissan+Sentra+code+p0171

Ideally you need an auto electrician with a pro grade scan tool...

P0420 refers to the catalyst system efficiency below threshold. This code is not easy to fix since there are many possible root causes like the Three way catalyst (manifold).
Exhaust tube. Intake air leaks, Fuel injector, Fuel injector leaks. Spark plug. Improper ignition timing. Repairs can be costly if not pinpointed early the most likely cause. The best approach is to have it monitored thru a scan tool, plot and record some datas for careful evaluation.

Download 2008 Nissan Sentra Steering Control System Section STC PDF Manual...

https://carmanuals2.com/brand/nissan/sentra-2008-5010
Here is factory sevice info !

Download 2008 Nissan Sentra Power Supply Ground Circuit Elements Section...

If you want to replace the fuel pump regulator you are better off getting the whole fuel pump module I know its expensive.The problem is you went on line and there is a bunch of chatter about the fuel pump causing delayed starts. They are right. There is a TSB Nissan put out this includes the fuel pump and there is no mention of the regulator that I know of.

it is wher the engine meets the transmission..on the flywheel...and the oxygen sensors bank 1 is the one before the catalyst....and bank 2 is the one after the catalyst....

possibly. have you changed all your filters? check air filter and throttle body. may be ruined from the water. the throttle body can be cleaned with a fuel injection spray. does your check engine light come on?

try doing a fuel system cleaning service. most oil change places will do it for about 60 bucks or so, also have the fuel filter changed, may help a bit

Yep they installed the timing belt or chain incorrectly. They didnt have the cam and crank timing marks aligned when they put the timing belt on.

I had this question initially. However, the Nissan Sentra (starting in 2007) has an electric Power Steering. It DOES NOT need any power steering fluid. The electric power steering is suppose to give you better fuel efficiency and lower maintenance cost.