2003 chevrolet tracker code p0172 p0175 - Tracker Chevrolet Cars & Trucks

SOURCE: Check engine light. got 2 codes P0172 and p0175.

Unclip the 02 harness, then take out the 02 sensor. 5 minute job.

SOURCE: how do i change spark plugs on a 2003 chevy tracker?

I don't know if your vehicle is a 4 cylinder or 6 cylinder. This will make a difference in the # of cylinders as well as the placement. If it is the 4 c ylinder when you open the hood it says at Autozone.com that the spark plugs are on the front of the motor lined up 1-4. If it is the 6 cylinder then you will have 3 at the front of the motor and 3 at the back of the motor. Regardless it is the same concept. I don't know for this particular vehicle, but it is possible you may have to remove a large plastic engine covering in order to access the spark plugs. What I recommend is to replace the spark plug wires at the same time as the plugs. For all my vehicles I use NGK plugs and NAPA auto parts has the best plug wires I have used - Belden Maxx. Prior to starting you will want to check the "GAP" on each new spark plug. Using a spark plug gap tool available at parts places for about $1. Take the new plug and the non-porcelin end (the end that has the arc) insert the arc into the gap tool at the lowest end and slide the plug around until you reach the corresponding "GAP". For this vehicle it should be .44" (I checked on Autozone's website but you may want to check to be sure. At some of the part's places they may tell you that you don't have to check the gap, but believe me you alway's should. I just did a car where they insisted that I didn't need to check the gap and each plug was not gapped properly. The Arc on the plug has to be specific for your vehicle or you will have too much spark or not enough. After gapping the new plugs you are ready to start. Somewhere on the side of the motor you should see either 4 or 6 wires/cables branching out to the cylinders. Starting with whichever you prefer (do only one at a time to avoid confusion) trace the wire/cable to the cylinder and where it goes to the cylinder a "boot" covers the spark plug. Twist the boot until it comes off . If you are going to replace the plug wires take that one off and match it up to your new set (They will be different lengths). You will need a ratchet and a spark plug socket (available at parts places) The spark plug socket has rubber on the inside to protect the porcelin of the spark plug, and to provide grip. You may or may not need a small extension. Place the spark plug socket over the end of the spark plug and apply pressure until the spark plug begins to loosen. You may have to apply quite a bit of pressure if they are in there tight. Once it is loosened take the old plug out, and place the new plug in the spark plug socket. Don't use the ratchet at this point, just begin to thread the plug in by hand once it is in there as much as you can get it, tighten it down with the ratchet making sure not to over-tighten. Do the other cylinders in the same manner.

Marvin

• 85242 Answers
• Posted on Jul 17, 2009

SOURCE: what does the code p0175 and p0172 means

go to the link for poss causes
http://autorepair.about.com/library/images/bl406a-lib.htm

SOURCE: Check Engine light is on my 1997 F150 with a small

CODE PO171 SYSTEM ADAPTIVE FUEL TOO LEAN BANK 1. CODE PO172 SYSTEM ADAPTIVE FUEL TOO RICH BANK 1. CODE PO174 SYSTEM ADAPTIVE FUEL TOO LEAN BANK 2. CODE PO175 SYSTEM ADAPTIVE FUEL TOO RICH BANK 2. ALL CODES COULD BE CAUSED BY AIR LEAKS AFTER THE MASS AIR FLOW SENSOR OR LEAKS IN THE PVC SYSTEM.EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED.FUEL INJECTORS RESTRICTED OR NOT GETTING ENOUGH FUEL WEAK FUEL PUMP. LEAKING EGR GASKET OR LEAKING EGR VALVE DIAPHRAM.MASS AIR FLOW SENSOR DIRTY CAUSES PCM TO UNDERESTIMATE AIRFLOW.

Testimonial: "Thanks for the . I changed the PVC valve and fuel filter and was able to reset the codes (I couldn't before). So far so good."

SOURCE: I have a 97 Chevy Tahoe 4x4 with a 5.7 engine the

Hey. How many miles on it. If over 100,000, it may need new O2 sensors but unlikely both would go out of spec at the same time. You will need to install a scan tool with data stream abilitys. The pressure regulator could be ruptured which will drastically richen up both banks. If no tool, locate the pressure regulator, usually on the right side at the end of fuel rail. Make sure the vacuum line is attached and pulls vacuum. Unhook the line. The motor should sound very different and then correct itself when hooking the line back up. If there is no vacuum at the line, check for a broken or cracked area. Never overlook the simple stuff. Also need to check coolant temp sensor accuracy. It can be in tolerance but still read incorrect coolant temp. There are numerous other items that will cause a rich condition but check these first. TJ.