Question about 2000 Pontiac Grand Prix

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I need to know the size of the exhaust pipes

I need to know the size of the exhaust pipes that go into a muffler on a 2000 grand prix gt. I heard it was 2.25 in.

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You can call any parts store and ask them in inlet size of a muffler for your car and engine

Posted on Nov 24, 2009

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1 Answer

When removing the fuel tank on a 2006 grand prix, do you have to remove any exhaust pipes to get it down.


  1. Support the exhaust system.
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How do I replace muffler in 2002 grand prix se?


if the exhaust is all one piece meaning no joints/connections then cut the old muffler out by cutting the pipe in front and behind the muffler leaving enough pipe for the new muffler to slide around the exhaust pipe and then using muffler clamps clamp the pipes in place on the muffler until its tight.

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I have an 03 grand am GT that I bought 3 months ago, its been a great car up until a few weeks ago, it starts and runs fine but when I hard accelerate it bogs down, I cant make highway speed 110 kmh, when...


The screaming and high RPM means the transmission is downshifting as it should be.
The code 420 is for catalytic converter low efficiency bank one, which could be an exhaust restriction or a fuel problem.
The easiest way to find out if it is a restricted exhaust is to remove the exhaust system where the cat connects to the pipe from the motor and test drive it a short distance. The restriction could be in the connector pipe between the cat and the muffler, or inside the muffler. A mechanic could also use an inferred heat thermometer to check the pipe temp from the engine back to the muffler while the engine is running.

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Can the muffler be replaced WITHOUT replacing the whole exhaust pipe system?


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Where is the oxygen sensor located on a 2000 grandprix gt


2000 Pontiac Grand Prix 3.1L SFI OHV 6cyl
The Oxygen Sensor is located under hood, center, rear engine area, above exhaust pipe flange, mounted in exhaust manifold.

Application: Number one

1be58c4.jpg

Fig. Locations of the heated oxygen sensors in the exhaust manifold and the three-way catalytic converter-3.4L (VIN E) engine shown, others similar

Hope help you with this. Good luck.

Sep 11, 2009 | 2000 Pontiac Grand Prix

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I need to know where you would locate a o2 censor and 2 map censors for a 2000 Pontiac Grand Am..V-6? I have no idea where to even begin looking on the car.


The O2 sensors are found on the exhaust pipe. They screw into the pipe and has wires coming off of them. The MAP sensor has a 3 or 4 wire plug with a vacuum hose connected to it commonly found on the intake or firewall.

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