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Engine coolingPart report

1984 Mercury Topaz Engine cooling Problems

Complaints
3about this part
Share
30%of 10 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the engine cooling of the 1984 Mercury Topaz, 30% of the 10 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Tfi module stopped functioning, causing car to stall. But now it won't start. Consumer has replaced 3 of these modules within the last three years. Consumer was very upset because there could be an accident.”

NHTSA complaint #873785, filed 2000-10

“When driving at 18 MPH the vehicle is stalling and cutting off. Consumer had the computer chip replaced, and the dealer can't determine the caus eof stalling.”

NHTSA complaint #852164, filed 1999-10

Engine cooling: other model years

YearComplaintsShare of year
19941321%
19931521%
19921423%
1991615%
1990613%
19891022%
1988419%
1987425%
1986333%
1984330%

Other parts of the 1984 Mercury Topaz

Electrical system
7 complaints
Exterior lighting
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 1984 Mercury Topaz

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology