>----------
>"Upon further review", how about codes 12 17 15 55 ??
>
>From what I've gathered so far, it seems to be pointing to a distributor
>replacement. Is this something that a good local garage usually can handle,
>or is this best done by a dealer? I bought the truck used in Sept, "as is"
>with no warranty, and since I'm a little pressed for $$, I don't want to
>pay the dealer rates unless I really have to.
>
>
>Thanks, Russ
>93 Sport V6, 2wd, 5spd
Russ ,
Here is a copy that I have of the codes listed. They may or may not be
exactly what you need, use at your own risk. Looks like a
thermostat/temp sensor or a speed sensor problem. Does your temp gauge
read low on the scale, or does your speedo act up intermittently?
Regards,
Gayle
* Activates Power Limited/Check Engine light.
11 No ignition reference signal detected during cranking (bad Hall
effect)
OR timing belt skipped one or more teeth;
OR loss of either camshaft or crankshaft position sensor
12 Battery or computer recently disconnected
13* MAP sensor or vacuum line may not be working
14* MAP sensor voltage below .16V or over 4.96V
15 No speed/distance sensor signal
16* Loss of battery voltage detected with engine running
17 (1985 turbo only): knock sensor circuit
17 Engine stays cool too long (bad thermostat or coolant sensor?)
21 Oxygen sensor signal doesn't change (stays at 4.3-4.5V)
Probably bad oxygen sensor
22* Coolant sensor signal out of range
- May have been disconnected to set timing
23* Incoming air temperature sensor may be bad
24* Throttle position sensor over 4.96V (SEE NOTE #3)
25 Automatic Idle Speed (AIS) motor driver circuit shorted
or target idle not reached, vacuum leak found
26 Peak injector circuit voltage has not been reached
(need to check computer signals, voltage reg, injectors)
(SEE NOTE #4 BELOW)
27 Injector circuit isn't switching when it's told to (TBI)
OR (MPI) injector circuit #1 not switching right
OR (turbo) injector circuit #2 not switching right
OR (all 1990-) injector output driver not responding
- check computer, connections
31 Bad evaporator purge solenoid circuit or driver
32 (1984 only) power loss/limited lamp or circuit
32 EGR gases not working (1988) - check vacuum, valve
32 (1990-92, all but Turbo) computer didn't see change in
air/'fuel ratio when EGR activated
- check valve, vacuum lines, and EGR electrical
33 Air conditioning clutch relay circuit open or shorted
(may be in the wide-open-throttle cutoff circuit)
34 (1984-86) EGR solenoid circuit shorted or open
34 (1987-1991) speed control shorted or open
35 Cooling fan relay circuit open or shorted
35 (trucks) idle switch motor fault - check connections
36 (turbo) Wastegate control circuit open or shorted
36 (3.9/5.2 RWD) solenoid coil circuit (air switching)
36 (Turbo IV) #3 Vent Solenoid open/short
37 Shift indicator light failure, 5-speed
OR
part throttle lock/unlock solenoid driver circuit (87-89)
OR
solenoid coil circuit (85-89 Turbo I-IV)
OR
Trans temperature sensor voltage low (1995 and on; see NOTE 2)
41* Alternator field control circuit open or shorted
42 Automatic shutdown relay circuit open or shorted
42 Fuel pump relay control circuit
42 Fuel level unit - no change over miles
OR
42 Z1 voltage missing when autoshutdown circuit energized (whatever
that means)
43 Peak primary coil current not achieved with max dwell time
OR
43 Cylinder misfire
OR
43 Problem in power module to logic module interface
44 No FJ2 voltage present at logic board
OR
44 Logic module self-diagnostics indicate problem
OR
44 Battery temperature out of range (see Note #1!)
45 Turbo boost limit exceeded (engine was shut down by logic module)
46* Battery voltage too high during charging or charging system
voltage too low
47 Battery voltage too low and alternator output too low
51 Oxygen sensor stuck at lean position (lean condition)
OR
51 Internal logic module fault ('84 turbo only)
52 Oxygen sensor stuck at rich position
OR
52 Internal logic module fault ('84 turbo only)
53 Logic module internal problem
54 No sync pickup signal during engine rotation (turbo only)
OR
54 Internal logic module fault ('84 turbo only)
55 End of codes
61 "Baro" sensor open or shorted
62 EMR mileage cannot be stored in EEPROM
62 PCM failure SRI mile not stored
63 Controller cannot write to EEPROM
64 Catalytic converter efficiency failure
65 Power steering switch failure
88 Start of test (not usually given, don't expect it)
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