Grand Marquis V8-302 5.0L VIN F TBI (1984)
Technical Service Bulletin # 841910
Date: 840912
Fuel Gauge - Concern Summary Reprints
Article No. 84-19-10
GAUGE - FUEL - INDICATOR LEVEL - SUMMARY OF 1983-84 CONCERNS
FORD 1983-84 ALL
LINCOLN-MERCURY 1983-84 ALL
Several production and service improvements in fuel level gauge indication have been incorporated in 1983 and 1984 vehicles. Listed below is a
summary of all TSB's that have been issued which refer to the fuel system concerns. The articles listed have also been reprinted for your convenience.
Model Year
Concern Description
and Vehicles
Cause/Service Action
Date
Page
Gauge - Fuel - Reads
1983-1/2 T-Bird/Cougar
Fuel filter mispositioned causing
83-24-5 37
1/4 Full When Empty
with 2.3L T EFI,
inaccurate fuel level indication -
12/1/83
5.0L CFI
replace filter
Gauge - Fuel - Reads
1984 Mustang/Capri
Fuel tank sender float hangs-up on
84-2-8-S
37
3/4 When Full
tank top - replace fuel tank
2/28/84
Gauge - Fuel - Reads Lower
1984 T-Bird/Cougar
Pinched fuel system vent tube on
84-7-8
39
Than Expected After Short
vehicles built prior to 1/15/84
3/27/84
Period of Driving
causes slight fuel tank expansion -
service vent hose routing
Gauge - Fuel - Level
1983 T-Bird/Cougar
Fuel tank reservoir empties while
84-8-3
39
Fluctuation While Driving
with CFI or Turbo
driving - slow refill causes
4/10/84
gauge to fluctuate - replace tank to minimize fluctuation
Gauge - Fuel - Level
1984 LTD/Marquis
Fuel tank reservoir empties while
84-18-15
40
Fluctuation While Driving
with CFI
driving - slow refill causes gauge
8/28/84
to fluctuate - replace tank to minimize fluctuation
Gauge - Fuel - Erratic Indica-
1984 Escort/Lynx,
Vehicle built before 5/28/84 may
84-18-16
40
tion Caused by Sticking Fuel
Mustang/Capri, LTD/
have sticking fuel sender pivot -
8/28/84
Sender/Fuel Pump Sender
Marquis, T-Bird/Cougar,
replace fuel sender unit
-
Car Runs Out of Fuel Tempo/Topaz, Mark VII, Continental; 1983 T-Bird/Cougar
Gauge - Fuel - Reads 1/4 Full When Empty
FORD 1983-1/2 T-BIRD - 2.3L T EFI, 5.0L CFI
LINCOLN-MERCURY 1983-1/2 COUGAR - 5.0L CFI
A fuel sender filter on CFI vehicles, that is mispositioned or bent upward may cause an inaccurate fuel level indication at empty. A replacement filter is
now available for the following applications:
Vehicle
Application
T-Bird
2.3 TC EFI, 18 Gallon Tank
T-Bird/Cougar
All CFI, 21 Gallon Tank
T-Bird/Cougar
All CFI, 21 Gallon Tank
Electronic Cluster
Service Procedure
1.
Refer to Shop Manual Section (33-20) for fuel sender removal.
2.
After removing fuel sender from fuel tank, verify that filter is bent upward, interfering with float movement.
3.
Grasp sender firmly at pump and pull filter off pump using a twisting, pulling motion.
