What precautions should be taken before servicing the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?

Switch off the air suspension system before servicing the exhaust heat shields of the catalytic converter and muffler, to avoid vehicle movement. Lift the car up and check on loose or missing heat shields. Install new catalytic converter, or secure loose shields with worm clamps. Lower the vehicle afterward.

OEM Mercury Grand Marquis Exhaust Heat Shield

Heat Shield

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Mercury Grand Marquis Heat Shield, Driver Side Part Number: 3W7Z-9Y427-AA
$15.12 MSRP: $21.45
You Save: $6.33 (30%)
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Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Exhaust Manifold Heat Shield, Left; Exhaust Heat Shield; Heat Deflector
- Manufacturer Note: Shield exh. manifold, LH
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS

Mercury Grand Marquis Exhaust Heat Shield

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Mercury Grand Marquis Exhaust Heat Shield Parts and Q&A

Heat Shield, Driver Side
3W7Z-9Y427-AA
Q: What precautions should be taken before servicing the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?
A: Switch off the Air Suspension system before servicing the exhaust heat shields of the Catalytic Converter and Muffler, to avoid vehicle movement. Lift the car up and check on loose or missing heat shields. Install new catalytic converter, or secure loose shields with worm clamps. Lower the vehicle afterward.