My 1996 Chrysler Town & Country has a corroded exhaust pipe that extends from the engine manifold to the rear of the engine compartment. My mechanic said it was a "pre-heat" pipe and it was too big a job for him because a lot of engine parts would have to be removed to replace it. I just need to know the real name of the pipe so I can order it. Thanks
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if your asking where is sensor 1 bank 1 its in the exhaust pipe coming off the firewall side(rear) of the engine, sensor 1 bank 2 is in the exhaust pipe coming off the rad side(front) of the engine. they are the first sensor that you come to.
bank one sensor one is always before the catalytic converter. Crawl under the van and look at the exhaust pipe up where it bolts to the rear exhaust manifold. You will see the O2 sensor either coming out the top of the manifold or coming out of it on the drivers side.
DTC P0171 - System Too Lean (Bank 1) Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
Note: This DTC (Diagnostic Trouble Code) is very similar to P0174, and in fact your vehicle may show both codes at the same time.
I would suggest that you take a look at the front oxygen sensor. Typically speaking the oxygen sensor causes this code to appear. Here is the possible cause list from the manual for your car.
Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose
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There are 3 O2 sensors on your car model.
Two upstream sensors and one down stream sensor.
Upstream are before the catalytic converter and downstream is after the catalytic converter.
Its screwed into the exhaust pipe.---------
Right bank upper sensor which is on the side of the engine
closer to the fire wall and mounted on the exhaust manifold, right in the
middle above the exhaust pipe.
Find the exhaust pipe under the rear bumper. Follow its progress towards the front of the car. The first big bulbous thing you will find is the muffler, keep going. The next bulbous thing you may find is a resonator, keep going. Eventually you will come to a little thingy screwed into the side of the exhaust pipe which has some wires coming from it. That is your downstream O2 sensor. Next will be the catalytic converter, next thing will be the upstream O2 sensor, then the exhaust manifold, the the head of the engine.
It should be located near the outlet in the rear exhaust manifold, ahead of the converter. The downstream sensor 2 is the one located behind the converter or sometimes in the rear of the converter body.