Fuel - Hard Start After Injector R&R, Application Chart

Bulletin No. T 85-45
File In Group 6C
Number 95
Date Jan. '85
SUBJECT-. HARD STARTING OR REDUCED PERFORMANCE - INJECTOR
USAGE 1980-1985

MODELS AFFECTED: 1981-1985 DEVILLE AND FLEETWOOD BROUGHAM (RWD) 1980-1985 ELDORADO AND SEVILLE 1983-1985 CIMARRON 1985 DEVILLE AND FLEETWOOD

FIGURE 1 - Injector:

Some 1980-1985 throttle body injection equipped vehicles may experience hard starting or reduced performance if the incorrect injectors are installed when servicing a vehicle. Injector flow rates vary, therefore, injectors with different production part numbers are not generally interchangeable, even though they may appear to be identical. The injector is identified by the production part number imprinted on the top surface of the injector, see Figure 1. The color coded paint spot which may appear on the top of the injector is used for manufacturing purposes only and must not be used to identify proper injectors.
It should be noted that the 1985 and 1985-1/2 FWD-C injectors and fuel meter assemblies are not interchangeable. These can be identified by the color of the ISC motor and throttle lever. The 1985 injectors listed in the attached chart must be used on a throttle body having a "gold" ISC motor and throttle lever. Likewise, the 1985 1/2 injectors, which were used in production beginning with B.C. No. 242505 (Engine Unit Number 350000) must be used on throttle bodies having a "black" ISC motor and throttle lever.

IMPORTANT: If exchanging a fuel meter assembly with one from a known good vehicle for diagnostic purposes, the two throttle bodies must have the same color throttle lever.

The chart, located on the reverse side, summarizes fuel injector usage on 1980-1985 throttle body equipped vehicles and should be used to determine if the vehicle has the proper injectors based upon the production P/N imprinted on the injector. Listed are the original equipment part numbers, the production part numbers of service parts and the GMWDD service part numbers of the service kit.

CADILLAC THROTTLE BODY INJECTION - INJECTOR APPLICATION CHART

ORIGINAL EQUIPMENT SERVICE
INJECTORS INJECTORS GMWDD SERVICE
YEAR PRODUCTION P/N PRODUCTION P/N KIT P/N

1980 6.0L (E/K) 5233565*DED 5234210*DED 17079012

1981 6.0L (C/E/K) 5233565*DED 5234210*DED 17079012
17061906*B

1982 HT4100 (C/E/K) 5233760*DED 5233760*DED 17078258
5233760*B OR
17071189*RPD 5233760*B
OR
17071189*RPD
OR
17071189*B

1983 HT4100 (C/E/K) 5234085*B 5234085*B 17079500
1984 HT4100 (DW/E/K) (5235204*RPD)1 (17111276)1
1985 HT4100 (DW & E/K EXPORT)

1983 2.OL EFI (J) 5234395*RPD 5234395*RPD 17079694
1984 2.OL EFI (J) 1985 2.OL EFI (J)

1985 TFWD C 5234085*B 5234085*B 17079500
IDENTIFIED BY "GOLD" (5235204*RPD)1 (17111276)1
ISC MOTOR & THROTTLE LEVER ON THROTTLE BODY

1985 HT4100 (DW/E/K) 5235132*RPD 5235132*RPD 17110659
1985 HT4100 TFWD C (EXPORT) (5235205*RPD)1 (17111277)1
1985-1/2 HT4100 TFWD C (BEGINNING WITH EUN 350000) IDENTIFIED BY "BLACK" COLORED ISC MOTOR & THROTTLE LEVER ON THROTTLE BODY

1 AVAILABLE MARCH 1985 - REPLACES EXISTING SERVICE KIT.