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Thread: $0D Re-enabled knock sensor, getting code 43 knock sensor circuit failure

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  1. #1
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    21392 will be the correct KS for the 16197427 platform and Memcal for a 350 or 454, it should ohm out to 3.9K ohms or there about.

    DKS208 is the NAPA part # I use.

    305 trucks used a different KS , so the Memcal you pulled would have a different filter board.

    TOM
    Last edited by Nasty-Z; 04-14-2015 at 08:45 PM.
    1994 3500 Dually , 502 (509) , 264HR , Edelbrock MPFI , PFI '7427
    1992 S-10 434 SBC/Tremec - '7427
    1986 Monte Carlo SS
    1984 S-10 , SAS, 496/700R4/205 , D44/14BFF -'7427
    1980 Z-28 496/700R4
    1979 Corvette 496/700R4
    1977 Olds 98 Regency 403/700R4

  2. #2
    EFI tuning addict 96lt4c4's Avatar
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    Quote Originally Posted by Nasty-Z View Post
    21392 will be the correct KS for the 16197427 platform and Memcal for a 350 or 454, it should ohm out to 3.9K ohms or there about.

    DKS208 is the NAPA part # I use.

    305 trucks used a different KS , so the Memcal you pulled would have a different filter board.

    TOM
    Ok, well I have several PCM's 16197427 and 16196395's. The 305 had a 16196395 in it, I grabbed the PCM as well. So I can match the Memcal to the PCM, but it looks like I still have the wrong knock sensor. I think right now I have the stock 7427 computer in my truck with the 305 memcal and a 350 KS.

    What would using the 305 KS do, just be more sensitive?

    -1999 Hugger Orange SS, LS2 402 T56, 9 inch Ford 3.90 gears, Tuned with HP Tuners
    -2002 Cavalier, Tuned with HP Tuners
    -1994 Full Size Blazer ,383 TBI 4L60E, 4.10's, Tuned with Tunerpro RT (Where it all began)

  3. #3
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    Quote Originally Posted by 96lt4c4 View Post
    Ok, well I have several PCM's 16197427 and 16196395's. The 305 had a 16196395 in it, I grabbed the PCM as well. So I can match the Memcal to the PCM, but it looks like I still have the wrong knock sensor. I think right now I have the stock 7427 computer in my truck with the 305 memcal and a 350 KS.

    What would using the 305 KS do, just be more sensitive?
    You could use a KS for the 305 that would match the Memcal , that would work fine . My guess is like yours , I think it would be a tad more sensitive due to the smaller bore of the 305 .

    Let us know the results. 305 Memcals seem to be a bit more plentiful that their 350 / 454 counterparts.

    TOM
    1994 3500 Dually , 502 (509) , 264HR , Edelbrock MPFI , PFI '7427
    1992 S-10 434 SBC/Tremec - '7427
    1986 Monte Carlo SS
    1984 S-10 , SAS, 496/700R4/205 , D44/14BFF -'7427
    1980 Z-28 496/700R4
    1979 Corvette 496/700R4
    1977 Olds 98 Regency 403/700R4

  4. #4
    EFI tuning addict 96lt4c4's Avatar
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    Quote Originally Posted by Nasty-Z View Post
    You could use a KS for the 305 that would match the Memcal , that would work fine . My guess is like yours , I think it would be a tad more sensitive due to the smaller bore of the 305 .

    Let us know the results. 305 Memcals seem to be a bit more plentiful that their 350 / 454 counterparts.

    TOM
    OK, I may recheck the yard here in the next couple days to see If a 350 truck show's up. They have a pretty quick turn around. I didn't realize the 305 memcals were so plentiful. I knew the V6 ones were.

    -1999 Hugger Orange SS, LS2 402 T56, 9 inch Ford 3.90 gears, Tuned with HP Tuners
    -2002 Cavalier, Tuned with HP Tuners
    -1994 Full Size Blazer ,383 TBI 4L60E, 4.10's, Tuned with Tunerpro RT (Where it all began)

  5. #5
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    I've been looking for 454 memcals for the '7427 / '6395 for a while now , they show up from time to time and I try to scarf them up ......

    The pick-a-parts around here have lots of 305 trucks with '7427's and 6395's in them , never thought of trying those memcals in a conversion.

    TOM
    1994 3500 Dually , 502 (509) , 264HR , Edelbrock MPFI , PFI '7427
    1992 S-10 434 SBC/Tremec - '7427
    1986 Monte Carlo SS
    1984 S-10 , SAS, 496/700R4/205 , D44/14BFF -'7427
    1980 Z-28 496/700R4
    1979 Corvette 496/700R4
    1977 Olds 98 Regency 403/700R4

  6. #6
    EFI tuning addict 96lt4c4's Avatar
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    Well, I installed the 305 KS, light came on. I am using the computer, and memcal from the same truck. Brand new KS.

    I don't know may the memcal KS circuit is bad.

    -1999 Hugger Orange SS, LS2 402 T56, 9 inch Ford 3.90 gears, Tuned with HP Tuners
    -2002 Cavalier, Tuned with HP Tuners
    -1994 Full Size Blazer ,383 TBI 4L60E, 4.10's, Tuned with Tunerpro RT (Where it all began)

  7. #7
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    Quote Originally Posted by Nasty-Z View Post
    I've been looking for 454 memcals for the '7427 / '6395 for a while now , they show up from time to time and I try to scarf them up ......

    The pick-a-parts around here have lots of 305 trucks with '7427's and 6395's in them , never thought of trying those memcals in a conversion.

    TOM
    Quite the opposite from here, most of the trucks I run across in the yard have a 350 or 454 and the occasional 6.5. 305s are rare as hens teeth unless you find a G10 van and it seems most of them had 4.3s. It took me 3 different yards the last time I was searching for a 4.3 TBI memcal for a 395/7427. Finally found one in an Astro van sleeping peacefully after a massive rear-end collision.

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