EVP SENSOR CORE SYSTEM FAILED, KEEPING EGR VALVE OPEN, CAUSING ENGINE TO STALL. (FIRST VEHICLE ON 601573)
1984 Mercury Grand Marquis
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Grand Marquis years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 15 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Vehicle Speed Control. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Structure complaints
2 reportsHEAD LINER IS LOOSE, BLOCKING VISIBILITY.
Official recalls
183V134000 · Seat Belts:front:anchorage
Dec 20, 1983
THE BOLTS THAT ATTACH THE D-SHAPED RING FOR THE SHOULDER BELT ARE INADEQUATELY SUPPORTED BY THE MATERIAL IN WHICH THEY ARE MOUNTED. THE ATTACHMENT DOES NOT COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 210, "SEAT BELT ASSEMBLY ANCHORAGES".
Consequence & remedy
Consequence: Not supplied
Remedy: DEALERS WILL INSTALL NEW ATTACHING HARDWARE TO IMPROVE THE STRENGTH OF THE MOUNTING.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE91125 · Brake Line Punctures
Opened Sep 11, 1991 · Closed Jan 15, 1992
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available
Illustration