Two problems related to manifold/header/muffler/tail pipe have been reported for the 2007 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mercury Grand Marquis based on all problems reported for the 2007 Grand Marquis.
Tl- the contact owns a 2007 Mercury Grand Marquis. The contact stated that when the vehicle was started, the check engine light illuminated and flashed the vehicle was taken to an independent mechanic who diagnosed that the intake manifold was cracked and leaked anti-freeze into the oil. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 140,000. Fe.
Tl - the contact owns a 2007 Mercury Grand Marquis. The contact stated the while attempting to start the vehicle, he heard a loud noise. The vehicle was taken to the dealer where the technician diagnosed that a spark plug had blown out of the engine head. In addition, the contact mentioned that the vehicle started to overheat without warning. The vehicle was taken to the dealer and the technician diagnosed that the thermostat was defective and needed to be replaced. The failure recurred and the vehicle was taken back to the dealer, who then advised that the intake manifold needed to be replaced. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was repaired. The failure mileage was 108,000 and the current mileage was 118,000. Kmj.
| Engine And Engine Cooling problems | |
| Manifold/header/muffler/tail Pipe problems | |
| Engine problems |