One problem related to other fuel system fuel injection system has been reported for the 1999 Mercury Cougar. The most recently reported issues are listed below.
Vehicle hesitation upon start up due to faulty fuel regulator and intake gaskets.
| Other Fuel System problems | |
| Other Fuel System Fuel Injection System problems | |
| Other Fuel System Delivery problems | |
| Other Fuel System Pump problems | |
| Other Fuel System Tank Mounting problems |