Inline 6 on a 0411 pcm

[Thorwon]

I'm in no way trying to say it won't work. More just inquiring as I know of no OEM crank sensors that read anywhere but directly off the crankshaft. I hope you will keep this thread updated with whatever issues you run into. It will be interesting. And the cam sensor does not need anywhere near the accuracy of the crank sensor. It's just telling the PCM TDC either compression or exhaust. OEM vehicles using a P01 don't even need the cam sensor to run. Without a CMP signal on start the PCM will guess TDC on compression. If no start it will wait 180 degrees and fire the plug again. Once it starts it will sync on that position until the next key cycle.

That's what I love about this site, You can never tell when somebody will teach you something. I love learning and I didn't know that.

So if I put a CRP on the crank and drop a big cap HEI in this engine it'll run? That would be crazy.

All I really need is a way to run the fueling.

[2xls1]

That's what I love about this site, You can never tell when somebody will teach you something. I love learning and I didn't know that.

So if I put a CRP on the crank and drop a big cap HEI in this engine it'll run? That would be crazy.

All I really need is a way to run the fueling.

I can't say for sure on a V6 OS which I think you'll be using but for sure on 4.8, 5.3, 5.7, and 6.0 will run without a CMP signal. You can get an extended crank while the PCM figures out compression TDC. One thing is do not disable the DTCs for the CMP sensor. The PCM has to see the CMP code set for it to run without the signal. I've just never tested it on a vehicle with the CMP in the distributor. The V8s have the cam reluctor either directly on the back of the cam or up front on the cam gear.

[Thorwon]

I can't say for sure on a V6 OS which I think you'll be using but for sure on 4.8, 5.3, 5.7, and 6.0 will run without a CMP signal. You can get an extended crank while the PCM figures out compression TDC. One thing is do not disable the DTCs for the CMP sensor. The PCM has to see the CMP code set for it to run without the signal. I've just never tested it on a vehicle with the CMP in the distributor. The V8s have the cam reluctor either directly on the back of the cam or up front on the cam gear.

I may try it both ways and just see what I get. I'm going to use the 2002 Chevy S-10 L35 4.3L 4L60E (12212156) bin I posted in the start of the thread.

I've still got to swamp in a manual trans sec.

[2xls1]

Here is a stock 2002 Silverado 4.3L M5 Trans bin if that will help.

[Thorwon]

Here is a stock 2002 Silverado 4.3L M5 Trans bin if that will help.

Thanks, I'll take a look at it.

[dave w]

I can't say for sure on a V6 OS which I think you'll be using but for sure on 4.8, 5.3, 5.7, and 6.0 will run without a CMP signal. You can get an extended crank while the PCM figures out compression TDC. One thing is do not disable the DTCs for the CMP sensor. The PCM has to see the CMP code set for it to run without the signal. I've just never tested it on a vehicle with the CMP in the distributor. The V8s have the cam reluctor either directly on the back of the cam or up front on the cam gear.

I don't know if either a V6 or V8 using the '0411 with a distributor mounted CMP will run without a CMP signal, that theory of operation will need to be tested.

What I've learned from the dual trigger distributors I've built is the alignment between CMP / CKP is CRITICAL. If the distributor mounted CMP is not accurately aligned with the CKP, the engine will not start.

dave w

[2xls1]

I don't know if either a V6 or V8 using the '0411 with a distributor mounted CMP will run without a CMP signal, that theory of operation will need to be tested.

What I've learned from the dual trigger distributors I've built is the alignment between CMP / CKP is CRITICAL. If the distributor mounted CMP is not accurately aligned with the CKP, the engine will not start.

dave w

I don't know if you can just "unplug" only the CMP on a V6 like you can on a V8. I just don't work on those like I do the V8s. Is there a separate plug on the distributor for only the CMP signal?

[dave w]

Is there a separate plug on the distributor for only the CMP signal?

The distributor mounted CMP has it's own 3 pin plug.

dave w