i know this has been asked before but...
07-23-2008, 08:51 PM
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i know this has been asked before but...
my search has failed... does anyone have a good wire diag for a 3b 91 200 20vt swap into a 87 4000csq? what wires go where and maybe a nice how-to .. i found one a while ago but google is not with me on this search tonight. can you guys help me out. i should have a rebuildible 20vt 3b by next week.
07-23-2008, 09:19 PM
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It's been a while, but I think the 20vt swap is the same as the 10vt..
As far as wiring goes. You only need like four wires from the ECU. If you have the Bentley's for both cars, it should be easy to figure out. They would know better on motorgeek.
07-28-2008, 09:10 AM
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Re: i know this has been asked before but...
1 TO HALL SENDER
2 INTAKE AIR SENSOR ALSO TO PIN 30 ECM
3 FUEL PUMP RELAY PLUG B TERM S
4 IDLE AIR CONTROL
5 PURGE VALVE CONTROL
6 IC TACH SIGNAL
7 AIR FLOW METER PIN 3
8 IGNITION COIL
9 NOT USED
10 GROUND
11 KNOCK SENSOR #1 SIGNAL WIRE
12 ALTITUDE SENSOR,TPS ,HALL SENDER
13 DIAGNOSIS CONNECTOR
14 GROUND
15 INJECTOR CONTROL CYL #3
16 INJECTOR CONTROL CYL#2
17 INJECTOR CONTROL CYL #1
18 FEED FROM FUSE 18
19 GROUND ALSO SHIELD WIRE GROUND O2,KNK,TIMING SENSOR
20
21 EMPTY
22 CHECK ENGINE LITE AND DIAGNOSIS CONNECTOR
23 WASTEGATE FREQUENCY VALVE CONTROL
24 GROUND
25 AIR FLOW METER PIN 4
26 AIR FLOW METER PIN 2
27 TO POWER VIA PLUG B PIN 15 ALSO COIL BLACK WIRE
28 O2 SENSOR SIGNAL WIRE
29 KNOCK SENSOR #2 SIGNAL WIRE
30 COMMON TO COOLANT SEN ,IAT,KNOCK ALTITUDE,TPS SENSORS
31 BOARD COMPUTER CONNECTORT10/9 DIGITAL BOOST SIGNAL
32 BOARD COMPUTER CONNECTOR T10/5 FUEL RATE?
33 BLANK
34 INJECTOR CONTROL CYL#5
35 INJECTOR CONTROL CYL#4
36 COOLANT COMBI SENSOR(3 OR 4 PIN) PIN 2R
37 POWER SUPPLY FUSE S 28 ALSO SUPPLIES INJECTORS ,AFM
38 T6F CONNECTOR CODING LOOP
39 T6F CONNECTOR CODING LOOP
40 TO A/C CLUTCH RELAY CLUTCH DEFEAT SIGNAL
41 TO A/C CONTROL HEAD IDLE UP SIGNAL?
42
43
44 ALTITUDE SENSOR SIGNAL
45 COOLANT TEMP SENSOR SIGNAL
46 ALTITUDE SENSOR
47 CRANKSHAFT SPEED SENSOR SIGNAL
48 TIMING / SPEED SENSOR COMMON
49 TIMING SENSOR SIGNAL
50
51
52 THROTTLE POSTION SWITCH
53 THROTTLE POSITION SENSOR
54 T6F CONNECTOR
55 DIAGNOSIS CONNECTOR
this is 3b ecm pin numbers device if you need more email me
2 INTAKE AIR SENSOR ALSO TO PIN 30 ECM
3 FUEL PUMP RELAY PLUG B TERM S
4 IDLE AIR CONTROL
5 PURGE VALVE CONTROL
6 IC TACH SIGNAL
7 AIR FLOW METER PIN 3
8 IGNITION COIL
9 NOT USED
10 GROUND
11 KNOCK SENSOR #1 SIGNAL WIRE
12 ALTITUDE SENSOR,TPS ,HALL SENDER
13 DIAGNOSIS CONNECTOR
14 GROUND
15 INJECTOR CONTROL CYL #3
16 INJECTOR CONTROL CYL#2
17 INJECTOR CONTROL CYL #1
18 FEED FROM FUSE 18
19 GROUND ALSO SHIELD WIRE GROUND O2,KNK,TIMING SENSOR
20
21 EMPTY
22 CHECK ENGINE LITE AND DIAGNOSIS CONNECTOR
23 WASTEGATE FREQUENCY VALVE CONTROL
24 GROUND
25 AIR FLOW METER PIN 4
26 AIR FLOW METER PIN 2
27 TO POWER VIA PLUG B PIN 15 ALSO COIL BLACK WIRE
28 O2 SENSOR SIGNAL WIRE
29 KNOCK SENSOR #2 SIGNAL WIRE
30 COMMON TO COOLANT SEN ,IAT,KNOCK ALTITUDE,TPS SENSORS
31 BOARD COMPUTER CONNECTORT10/9 DIGITAL BOOST SIGNAL
32 BOARD COMPUTER CONNECTOR T10/5 FUEL RATE?
33 BLANK
34 INJECTOR CONTROL CYL#5
35 INJECTOR CONTROL CYL#4
36 COOLANT COMBI SENSOR(3 OR 4 PIN) PIN 2R
37 POWER SUPPLY FUSE S 28 ALSO SUPPLIES INJECTORS ,AFM
38 T6F CONNECTOR CODING LOOP
39 T6F CONNECTOR CODING LOOP
40 TO A/C CLUTCH RELAY CLUTCH DEFEAT SIGNAL
41 TO A/C CONTROL HEAD IDLE UP SIGNAL?
42
43
44 ALTITUDE SENSOR SIGNAL
45 COOLANT TEMP SENSOR SIGNAL
46 ALTITUDE SENSOR
47 CRANKSHAFT SPEED SENSOR SIGNAL
48 TIMING / SPEED SENSOR COMMON
49 TIMING SENSOR SIGNAL
50
51
52 THROTTLE POSTION SWITCH
53 THROTTLE POSITION SENSOR
54 T6F CONNECTOR
55 DIAGNOSIS CONNECTOR
this is 3b ecm pin numbers device if you need more email me
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