Former User

160 Ohms is way too low between B15 and B16. With the distributor unplugged, the test I'm asking you to do is to measure resistance between:

1) B15 and OBD2a C2

2) B16 and OBD2a C12

Fearz32

Fearz32

I tested b15 and b16 with the distributor plug connected. And I tested continuity between b15 and c2 and b16 and c12 I will test for resistance now.

Former User

What is the B15-B16 Ohm measurement with the distributor unplugged?

okay

Also, with the distributor plug connected, what is the B11-B12 and B13-B14 Ohm measurement?

Fearz32

and b15-c2 and b16-c12 both tested at 000.2 ohms

Fearz32

B15 and b16 tested at 1.6 k with the ckp wires disconnected at the distributor.

Former User

Okay. With the distributor unplugged, the resistance should have been infinite.

Reconnect the distributor plug.

Measure resistance between B15 and the metal frame under the dash.

Measure resistance between B16 and the metal frame under the dash.

Also, with the distributor plug connected, what are the B11-B12 and B13-B14 Ohm measurements?

Fearz32

B15 does NOT continuity with frame
B16 does have continuity with frame
B13-b14=351 ohms
B11-b12=353 ohms

Former User

Nice update.

Based on all of your test results, there appears to be two problems in the CKP circuit:

1) ^This indicates a short to ground somewhere on the B16 circuit side of the distributor connector/distributor wire/distributor sensor. To verify, test for continuity to body ground for each CKP pin in the unplugged distributor connector.

2) ^This suggests that the two CKP wires are shorted to each other in the distributor connector when it is plugged in. Carefully inspect the male and female CKP pins for damage or bending in the distributor connector.

Fearz32

None of the ckp pins on the distributor have continuity to ground

Fearz32

All I can think of is its deff timing related. if I wired my alternator conversion harness wrong the previous time would that cause the ckp to go out in the distributor? I'm stumped

Former User

It's possible that the short to ground and short between the two CKP wires only occurs with the distributor connector plugged in.

Describe how you incorrectly wired the alternator harness, and post pictures. With it now wired correctly, is code 4 no longer thrown?

Fearz32

I incorrectly wired the distributor harness the first time. I will post pics of how I wires it also the car does not start now only sometimes sounds likes us in 2cyl honestly

Fearz32

Former User

What was the wiring mistake?

Fearz32

I did my own conversion harness by cutting the distributor plug and the harness plug and wiring them straight with the pin out. But I'm sure I had the key turned to on position and I accidentally shorted some wires. Could that have caused my distributor To go bad?

Former User

Which specific wires did you short? Shorted two wires together or shorted some wires to ground? Did you blow a fuse? Details are needed to answer your question.

Fearz32

I shorted some wires to ground I don't know exactly which wires touched together but it's was a couple of them. No fuses were blown my guess is I shorted the ckp/igniter because the code 4 will not go away even resetting the ecu.

Former User

Focus on the two wire shorts that your electrical tests have identified in the CKP circuit. Either locate and fix the shorts or run new CKP wires.

Fearz32

This might sound weird but the short is on the jumper only when p28 ecu plug b is plugged in? Aren't b16 and b16 supposed to be grounds? So they should have continuity to chassis ?

Former User

All tests I've suggested in your thread should have been done with at least OBD1 ECU connector B disconnected.

Fearz32

Okay with the ecu connector B disconnected there is no continuity to frame on neither b16 or b15 .

Former User

With everything else plugged in? Under this condition, what is the B15-B16 Ohm reading?

Fearz32

With every thing plugged in except ecu connector b the ohms read at 365

Former User

Reconnect everything.

Reset the ECU.

Does engine start and run? Is code 4 no longer thrown?