Ford explorer exhaust system

Ford Explorer: Exhaust System — 2.3L EcoBoost (201kW/273PS) / Description and Operation — Exhaust System — Overview

NOTICE: Do not use leaded fuel in a vehicle equipped with a catalytic converter. In a vehicle that is continually misfueled, the lead in the fuel will be deposited in the catalytic converter and completely blanket the catalyst. Lead reacts with platinum to «poison» the catalyst. Continuous use of leaded fuel can destroy the catalyst and render the catalytic converter useless. The addition of lead to the catalytic converter can also solidify the catalyst, causing excessive back pressure in the exhaust system and possibly causing engine damage.

NOTICE: Extremely high temperatures of 1,100°C (2,012°F) or above due to misfiring or an over-rich fuel/air mixture will cause the ceramic substrate to sinter or burn, destroying the catalytic converter. Do not continue to operate the vehicle if the engine is misfiring, there is a power loss or other unusual operating conditions, such as engine overheating and backfiring.

NOTICE: Do not use oil or grease-based lubricants on the isolators. These lubricants may cause deterioration of the rubber. This can lead to separation of the isolator from the exhaust hanger bracket during vehicle operation.

The exhaust system provides an exit for exhaust gases and reduces engine noise by passing exhaust gases through the catalytic converters and a muffler assembly. The catalytic converters also play a major role in reducing air pollutants.

• a catalytic conveter assembly

• a muffler inlet pipe with exhaust flexible pipe

• a central resonator assembly

• two rear mufflers

• isolators between the the muffler and tailpipe assemblies and the vehicle body

The catalytic converter plays a major role in the emission control system by operating as a gas reactor. Its function is to speed the heat-producing chemical reaction of components in the exhaust gases to reduce air pollutants.

The catalyst material inside the catalytic converter consists of a ceramic substrate.

The catalytic converter is designed to provide a long life. No maintenance is necessary.

Sound insulators and shields, attached to the underbody, protect the vehicle from exhaust system heat and should be inspected at regular intervals to make sure they are not dented or out of position. If a sound insulator and shield is damaged or shows evidence of deterioration, install a new insulator and shield. The sound insulators and shields for the muffler, muffler pipe and catalytic converter pipe are installed separately.

Some exhaust fasteners must be discarded and new ones installed as indicated in the procedures. Discard any damaged or heavily corroded fasteners and install new ones as necessary. Some exhaust fasteners are of a prevailing torque design. Use only new fasteners with the same part number as the original. Tighten the fasteners to the specified torque during reassembly to make sure of correct retention of exhaust components.

Description and Operation — Exhaust System — Component Location

Diagnosis and Testing — Exhaust System

Symptom Chart(s) Symptom Chart: Symptom Chart — Exhaust System Verify the customer concern. Inspect the components of the exhaust system for obvious signs of damage or other mechanical concern..

Other information:

Ford Explorer 2020-2023 Service Manual: Removal and Installation — Crankshaft Position (CKP) Sensor

Special Tool(s) / General Equipment 303-1521Alignment Tool, Crankshaft Position SensorTKIT-2010C-FLM 303-507Timing Peg, Crankshaft TDCTKIT-2001N-FLMTKIT-2001N-ROW Removal NOTICE: Do not loosen or remove the crankshaft pulley bolt.

Ford Explorer 2020-2023 Service Manual: Description and Operation — Jacking and Lifting — Overview

Stay in Neutral Mode NOTE: Always put your vehicle in Stay in Neutral mode when entering an automatic car wash. Failure to do this could result in vehicle damage not covered by warranty. Stay in Neutral mode allows your vehicle to stay in Neutral when you exit your vehicle.

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Ford Explorer: Exhaust System — 2.3L EcoBoost (201kW/273PS) / Removal and Installation — Catalytic Converter

WARNING: When the engine and exhaust system are hot, they can cause severe burns or injury. Turn off the engine and wait until they are cool before removing the exhaust system.

NOTE: Removal steps in this procedure may contain installation details.

1. Refer to: Health and Safety Precautions (100-00 General Information, Description and Operation).

1. Remove the HO2S from the catalytic converter.
   Refer to: Heated Oxygen Sensor (HO2S) (303-14A Electronic Engine Controls — 2.3L EcoBoost (201kW/273PS), Removal and Installation).

1. With the vehicle in NEUTRAL, position it on a hoist.
   Refer to: Jacking and Lifting — Overview (100-02 Jacking and Lifting, Description and Operation).

1. Remove the muffler inlet pipe assembly.
   Refer to: Muffler Inlet Pipe (309-00 Exhaust System — 2.3L EcoBoost (201kW/273PS)) .

1. Remove the catalyst monitor sensor.
   Refer to: Catalyst Monitor Sensor (303-14A Electronic Engine Controls — 2.3L EcoBoost (201kW/273PS), Removal and Installation).

1. Remove the front Driveshaft.
   Refer to: Front Driveshaft (205-01 Driveshaft, Removal and Installation).

1. Remove and discard the catalytic converter to turbocharger nuts.

1. 1. Remove the PIA nuts.
   1. Remove the bracket nuts. Remove the bracket and the catalytic converter.

1. Remove and discard the gasket.

1. Clean all exhaust connections before reassembly.

1. 1. Clean and inspect the gasket surface and the studs. Replace the studs if necessary.
      Torque: 18 lb.ft (25 Nm)
   1. NOTE: Make sure that a new gasket is installed. Install a new gasket.

1. NOTE: The nuts are only finger tight in this step. Install the catalytic converter. Install the mounting bracket and the nuts.

1. NOTE: Make sure that new nuts are installed. Install the catalytic converter nuts.
   Torque: 35 lb.ft (47.5 Nm)

1. 1. Tighten the nuts.
      Torque: 18 lb.ft (25 Nm)
   1. Tighten the PIA nuts.
      Torque: 18 lb.ft (25 Nm)

1. Install the front Driveshaft.
   Refer to: Front Driveshaft (205-01 Driveshaft, Removal and Installation).

Diagnosis and Testing — Exhaust System

Symptom Chart(s) Symptom Chart: Symptom Chart — Exhaust System Verify the customer concern. Inspect the components of the exhaust system for obvious signs of damage or other mechanical concern..

Removal and Installation — Downstream Catalytic Converter

Removal NOTE: Removal steps in this procedure may contain installation details. Refer to: Health and Safety Precautions (100-00 General Information, Description and Operation).

Other information:

Ford Explorer 2020-2023 Owners Manual: Switching Adaptive Cruise Control On and Off

The cruise controls are on the steering wheel. See Cruise Control. Switching Adaptive Cruise Control On Press to set the system in standby mode. The indicator, current gap setting and set speed appear in the information display. Switching Adaptive Cruise Control Off Press when the system is in standby mode, or switch the ignition off.

Ford Explorer 2020-2023 Service Manual: General Procedures — Cylinder Block Core Plug Replacement

Special Tool(s) / General Equipment 100-001 (T50T-100-A) Slide Hammer Materials Name Specification Motorcraft® Threadlock and SealerTA-25-B — Repair All core plugs NOTE: Cylinder block core plug shown, cylinder head core plug similar.

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Fastening the Seatbelts

The front outboard and rear safety restraints in the vehicle are combination lap and shoulder belts.

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