Fleetwood V8-252 4.1L VIN 8 FI (1983)
procedure outlined in Bulletin 85-35, Group 6C, "Poor Performance and/or Reduction in Power." These breakpoints are:
1983 "C"
B.C. No. 229508
1983 "E"
B.C. No. 647667
1983 "K"
B.C. No. 821885
10.
Retorque intake manifold and check for leaks.
11.
Road test vehicle again as described in step #1. Proceed to step #12 only if the above steps have not corrected the condition.
12.
Check PROM I.D. (DFI parameter .1.3). If the PROM I.D. matches that listed below, proceed immediately to step #13. If the vehicle does not
have the recommended PROM I.D. listed on the following page, replace the PROM with the indicated service part.
SERVICE
BROADCAST
PROM I.D.
P/N
CODE
(PARAMETER .1.3)
1983 C Federal
1227321
CTK
100
1983 C California
1226834
CTL
26
1983 E/K Federal With Mechanical I.P.
1227157
CTN
132
1983 E/K Federal With Digital I.P.
1227158
CTS
162
1983-1984 E/K California With Mechanical I.P.
1226835
CTP
57
1983-1984 E/K California With Digital I.P.
1226836
CTT
87
1984 DM/DW Federal
1227322*
DMW
101
1984 DM/DW California
16042787
DRD
26
1984 E/K Federal With Mechanical I.P.
1227323**
DMY
133
1984 E/K Federal With Digital I.P.
1227324**
DMX
163
1984 E Federal Convertible
1227325*
DMA
134
1984 E Federal Convertible With Digital I.P.
1227326*
DMB
164
*NOTE ON 1984 FEDERAL EMISSION SYSTEM PROM'S:
A 1985 style PROM device was used for the 1984 Federal PROM's. Before installing the PROM's noted with an asterisk (*), perform the following
additional check:
A.
Check the ECM label for service part number. If the service number is 1226930, go to step C.
B.
If the ECM label service part number is 1226028, check the ECM side rail number, record the first three (3) digits. The ECM side rail
number is a 15-digit number with a bar code above it; refer to Serviceman Bulletin 83-86 (Group 6C), Figure 1, for an illustration of an ECM
side rail number. The first three (3) side rail number digits will be "609", "082" or "209".
1.
If the side rail number begins with "209", go to step C.
2.
If the ECM side rail number begins with "609" or "082", replace the ECM with service part number 1226930. On the yellow "Dealer
Core Information Tag" for the ECM removed, write the following "Dealer Technician's Findings":
REMOVED PER SMB I-84-55A, 84 FED SURGE REPAIR.
C.
Install the appropriate PROM using the procedure found in 1984 Cadillac Service Information Section 6D3.
** NOTE ON 1984 E/K FEDERAL PROM'S:
Before installing PROM's, see Bulletin 85-10, filed in Group 6C. Follow "PROM Replacement" chart. Make sure that P/N 17084704 EGR valve is used
with the surge PROM's.
If steps 1-12 have not corrected the condition, perform the following additional step:
13.
Reindex the torque converter 120 degrees.
For warranty purposes, use labor Operation No. T6092, HT4100 Surge Repair, at 4.2 hours for steps 1-8 and 10-11. Add the following additional hours
if steps 9, 12 and/or 13 were required:
Step 9
-
Add .4 Hours (1983 vehicles before breakpoint)
Step 12
-
Add .4 Hours
Step 13
-
Add .4 Hours
