V6 to V8 swap, TBIChips.com Harris Memcal compatabilty?

[RobertISaar]

the diagram i'm seeing shows them exactly as such.



measuring them without the wire hooked up to them(either in-block or on a bench/etc), should see about 8.2K on each of them. when both are connected, combined parallel resistance should measure around 4.1K.

[EagleMark]

So they are, once again, a differant knock sensor?

There's also this in the $OD thread:

Dual vs single knock sensors:

V8 apps use single sensor. 4.3 V6 uses dual sensors wired in parallel. Code 43 will set if voltage on KS line is incorrect. Dual sensors can be used on V8 or single on V6 by changing max voltage parameter to set code 43.

Single Sensor
; ERROR 43
; KNOCK SYSTEM FAIL
;---------------------
L4E6A: FCB $A0 160 ; 16 SEC'S. HI VOLTS CK PERIOD
L4E6B FCB $E6 230 ; 4.5 VDC A/D UPPER VOLTS LMT
L4E6C FCB $14 20 ; 0.390 VDC A/D LOWER VOLT LMT

Dual sensors:

L4E6A: FCB $A0 160 ; 16 SEC'S. HI VOLTS CK PERIOD
L4E6B FCB $A2 162 ; 3.17 VDC A/D UPPER VOLTS LMT
L4E6C FCB $14 20 ; 0.390 VDC A/D LOWER VOLT LMT

[Woods]

Thanks guys, I did not mean this to be a thread about which sensor fits which application. My PCM requires a 3.9 knock sensor, did the research, got it. That is not the issue. Will my current memcal be the best way to proceed is my question?

[Nasty-Z]

To answer you question Mark , yes the 4.3 takes , yet again, another sensor(s) part # , FWIW it is NAPA Echlin DKS210 for the left head and DKS220 for the right, DKS210 is 1/4" NPT whereas the DKS220 is 3/8-16 thread, they are both 8.2K ohms , the two wired to the PCM on the same wire are as Robert stated, around 8.2K ohms each , 4.1 K ohms total to the PCM, which is why I had success in replacing the dual sensors withone KS6 3.9K ohm sensor years ago (I had thought I did , but CRS acted up again.....) .

To the OP , Sorry about cluttering up your thread , sometimes we get cought up in things and try to figure out something that is an issue . That way if somebody searches for an identical problem you are experiencing they can read thoroughly on the problem / cause / and possible solution.

If it were mine I would try to find a SBC V8 Memcal for the '7427 to start with , while the knock portion of your Memcal would suffice , the limp home Netres is incorrect in the event of a failure.

TOM

[Woods]

I decided to take option #4, think about my situation. Have a great weekend everyone.

[EagleMark]

As Tom said we get carried away in another direction because of the topic, thought you already had figured it would need a 5.7L Memcal from the same 16197427 PCM that you have.

Not sure why Tom said a 7060 PCM?

[Nasty-Z]

Not sure why Tom said a 7060 PCM?

That's what I get for trying to respond with one eye closed ...... LOL

My apologies to the OP , I meant '7427 :)

**Edited my original post to reflect my mistake**

TOM

[Woods]

thought you already had figured it would need a 5.7L Memcal from the same 16197427 PCM that you have.

If it was that easy, why didn't TBI Harris supply me with the right one to start with?