OEM Mercury Grand Marquis Exhaust Heat Shield

Mercury Grand Marquis Exhaust Heat Shield Parts Questions & Experts Answers

• 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: The Air Suspension electrical power must be switched off before working on exhaust heat shields for the Catalytic Converter and Muffler because unexpected air spring movement could shift the vehicle while hoisting or jacking or towing. Remove power from the air suspension switch before you position the vehicle to NEUTRAL on a hoist. The exhaust system requires inspection for unrestraints and damaged or gone heat shields. Install worm clamps to fix loose heat shields by using F0TS-5A231-A or W705949-S300 parts and cut off any excessive clamp ear material. The procedure calls for heat shield replacement when those components show damage or absence alongside necessary exhaust system components replacements. Finally, lower the vehicle.