i'm not getting spark or fuel.
i have a vats bypass wired in.
i'm getting 12v to the coils and injectors.
i have tested continuity on the grounds and they are good.

here is the info i found on this site as to what is in an aftermarket harness.
the wires marked with *'s are wires that are not in my harness.
have i removed something that needs to be there for the car to start?

BLUE

1 BLK PCM GROUND
2 LT GRN CRANK. POS. SENSOR B+ SUPPLY
3 PNK/BLK INJECTOR 3 CONTROL
4 LT GRN/BLK INJECTOR 2 CONTROL
8 GRA TP SENSOR 5V REF
11 LT BLU KNOCK SENSOR REAR
12 DK BLU/WHT CRANKSHAFT POS. SIGNAL
17 DK BLU TRANS. RANGE SIGNAL B
18 RED TRANS. RANGE SIGNAL C
19 PNK IGNITION. POS. VOLT.
20 ORG BAT. POS. VOLT
21 YEL/BLK CRANK POS. REF. LOW
26 TAN HO2S SIGNAL LOW BANK 2 SENSOR 1
29 TAN/WHT HO2S SIGNAL LOW BANK 1 SENSOR 1
*33 PPL TCC BRAKE SWITCH
*34 ORN/BLK PNP SWITCH SIGNAL
36 BLK INJECTOR 1 CONTOL
37 YEL/BLK INJECTOR 6 CONTROL
40 BLK PCM GROUND

*41 BLK EGR PINTLE POSITION. SENSOR GROU
*42 DK GRN ENG. COOLING FAN RELAY 1 CONTROL
43 RED/BLK INJECTOR 7 CONTROL
44 LT BLU/BLK INJECTOR 4 CONTROL
*45 GRA A/C REFRIG. PRESS. SENSOR 5V REF
*46 GRA FUEL TANK PRESS. SENSOR 5V REF
*47 GRA EGR PINTLE POS. SENSOR 5V REF
48 GRA MAP SENSOR 5V REF
51 DK BLU KNOCK SENSOR SIGNAL FRONT
*53 BLK TRAN. TEMP. SENSOR GROUND
54 ORG/BLK MAP SENSOR GROUND
*55 BRN EGR PINTLE POSITION. SENSOR SIGNAL
57 ORG BAT. POS. VOLT
58 DRK GRN SERIAL DATA
60 BLK TP SENSOR GROUND
61 PNK/BLK CAMSHAFT POS. SENSOR REF. LOW
66 PPL HO2S SIGNAL HIGH BANK 2 SENSOR 1
69 PPL/WHT HO2S SIGNAL HIGH BANK 1 SENSOR 1
73 BRN/WHT CAMSHAFT POS. SENSOR SIGNAL
74 YEL ENG. COOLLANT TEMP.SENSOR SIGNAL
76 BLK/WHT INJECTOR 5 CONTROL
77 DK BLU/WHT INJECTOR 8 CONTROL
*79 GRA OR WHT SKIP SHIFT SELENOID CNTROL (M/T) OR 2&3 SHIFT SELENOID CONTROL (A/T)
80 BLK ENG. COLOLANT TEMP. SENSOR GROUND

RED

1 BLK PCM GROUND
*2 BRN TCC CONTROL SOLENOID
*6 RED/BLK TRANS. PRESS.CONTROL SELENOID CONTROL HIGH
*8 LT BLU/WHT TRANS. PRESS.CONTROL SELENOID CONTROL LOW
*9 DK/GRN FUEL PUMP RELAY CONTROL
10 WHT ENG. SPEED (TACH) OUTPUT SIGNAL
*14 RED/BLK A/C REFRIG. PRESS. SENSOR SIGNAL
15 RED ALTERNATOR TERMINAL
*17 DRK GRN/WHT A/C REQUEST SIGNAL
*18 DK GRN A/C STATUS SIGNAL
*20 LT GRN/BLK VSS REFERENCE LOW
*21 ???? Not supplied ????
24 DK BLU TP SENSOR SIGNAL
25 TAN IAT SENSOR SIGNAL
26 PPL INGNITION CONTROL 1
27 RED INGNITION CONTROL 7
28 LT BLU/WHT INGNITION CONTROL 6
29 DK GRN/WHT INGNITION CONTROL 4
*30 DK BLU VDT FUEL ENABLE SIGNAL
31 YEL MAF SENSOR SIGNAL
32 LT GRN MAP SENSOR SIGNAL
*33 DK BLU ENG. COOLING FAN RELAY 2 & 3 CONTROL
*36 BRN AIR PUMP RELAY CONTROL
39 RED CAMSHAFT POS. SENSOR B+ SUPPLY
40 BLK PCM GROUND

*41 GRA EGR POSITION SENSOR GROUND
*42 TAN/BLK TCC ENABLE CIRCUIT
*43 DK GRN/WHT A/C CLUTCH RELAY CONTROL
*44 LT GRN REV. INHIBIT SOLENOID CONTROL
*46 BRN/WHT MALFUNCTION INDICATOR LAMP CONTROL
*47 YEL/BLK TRANMISSION. SHIFT SOLENOID B
*48 LT GRN TRANMISSION. SHIFT SOLENOID A
*50 DK GRN/WHT VEHICLE SPEED OUTPUT CIRCUIT
*51 YEL/BLK TRANS. TEMP. SENSOR SIGNAL
57 PPL IAT SENSOR GROUND
60 BRN INGNITION CONTROL REFERENCE LOW BANK 1
61 BRN/WHT INGNITION CONTROL REFERENCE LOW BANK 2
*63 PNK TRANS RANGE SIGNAL A
66 PPL/WHT IGNITION CONTROL 8
67 RED/WHT IGNITION CONTROL 2
68 DK GRN IGNITION CONTROL 5
69 LT BLU IGNITION CONTROL 3
76 LT GRN/WHT IAC COIL B HIGH
77 LT GRN/BLK IAC COIL B LOW
78 LT BLU/BLK IAC COIL A LOW
79 LT BLU/WHT IAC COIL A HIGH

 

I would think you need this one "*9 DK/GRN FUEL PUMP RELAY CONTROL".

 

the fuel pump is working because it is wired on it's own cirtuit.
maybe the computer needs to see something there, i wouldn't think so, but i dunno.

 

What do you have your VATS bypass wired to if you don't have #30 VTD fuel enable signal?

 

the vats bypass is going to pin 30.

 

What are you working on? You have an aftermarket wiring harness, but what's the PCM out of? Was just thinking if it's a truck PCM, the bypass won't work. Just a thought.

 

i trade for this car and it was already half done.

i don't know what this harness is from honestly. all the wires that have been removed were done so by the previous owner. it had all of the connectors chopped off when i got it. i modified all the wires to the correct lengths and put connectors on them. the wire colors are consitant with the 2000 fbody diagram i got off of this site.

the computer is marked stock 99 and the guy told me it was from an fbody.

rah!

 

A long time ago, I had modified a 5.3 harness for a guy. We got in a hurry and wanted to hear it run, and hadn't finished wiring up the fuel pump relay. We hot wire the fuel pump and went for it, nothing. When i scanned it , there was a code P0230 for fuel pump control. We wired up the fuel pump relay and then it started. now I don't know if that was it or not, but might be worth a shot..let us know...

Not sure if the PCM would shut down fire/fuel for a relay circuit not working.

Hey, also make sure you have power to injectors/coils/pcm DURING CRANKING

Regardless if VATS was disabled or not, you should always have spark, and injectors should fire for a few seconds..then die.

Also, injectors like to stick after sitting for a long time, might try priming the intake with fuel when you get spark going and still have problems.

 

hmmm, i guess i will move the fuel pump relay trigger from the key to the computer.
i already figured out the hard way the i need to wire up key hot AND the start position on the ignition key