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NHTSA — Engine And Engine Cooling: Exhaust System: Manifold/Header/Muffler/Tail Pipe Problems

2.2

hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
70,448 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mercury Grand Marquis exhaust system problems

exhaust system problem

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2004 Mercury Grand Marquis Owner Comments

problem #4

May 282016

Grand Marquis

  • miles

A D V E R T I S E M E N T S

The contact owns a 2004 Mercury Grand Marquis. While driving 30 mph, smoke emitted from the engine compartment of the vehicle. Upon inspection, the contact noticed that there was no coolant in the vehicle. The coolant was replenished and the vehicle was taken to an independent mechanic where it was diagnosed that the intake manifold had fractured and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

- Calumet Park, IL, USA

problem #3

Nov 272015

Grand Marquis

  • 96,794 miles
The contact owns a 2004 Mercury Grand Marquis. The contact stated that the exterior headlamps independently failed. The contact stated that the headlamps would sporadically work after a period of time. The vehicle was not diagnosed nor repaired. Prior to the failure, the intake manifold leaked anti-freeze. The vehicle was taken to the dealer where it was confirmed that the intake manifold needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failures. The failure mileage was 96,794.

- Chesterfield, VA, USA

problem #2

Oct 052013

Grand Marquis 8-cyl

  • Automatic transmission
  • 85,000 miles
The contact owns a 2004 Mercury Grand Marquis. The contact noticed that the vehicle continuously leaked coolant. The vehicle was towed to the dealer where they stated that the intake manifold needed to be replaced. The vehicle was repaired. The manufacturer was notified, but did not disclose that the part was modified from plastic to metal. The contact experienced multiple leaks before the part was modified to metal. The approximate failure mileage was 85,000. Remailed 08/18/14 updated 9/18/14 updated 02/11/2015

- Melbourne, FL, USA

problem #1

Jul 122004

Grand Marquis 8-cyl

  • Automatic transmission
  • 100,000 miles
Crack intake manifold because it's plastic. I had to pay for the repair and I was not at fault.

- Saint Louis, MO, USA

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