LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Torqhead and knock sensor

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Old Dec 16, 2019 | 03:29 PM
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Default Torqhead and knock sensor

I have been having trouble with surging on my lt1. I have been talking to moe about it. Last night and tonight it started throwing a code for low voltage p0327. I am going to put a new knock sensor in the engine and see what it does.

My question is what knock sensor do I buy do I just get one for a 96 lt1 odb2 computer? I want to order a A/c delco sensor. The on in the kit was aftermarket.
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Old Dec 16, 2019 | 03:35 PM
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Damn that's a good question... Any markings on the sensor that you currently have? Anyway... AutoZone lists one part number for a '94-'95 SU150, OBD1 And a separate for a 96-97 OBD2. The '96-'97 number is SU121 AutoZone brand but notes OEM#10456017.Delco number is 213-96. Corvette Grand Sport (LT4) lists the same SU121. Hope that helps

Last edited by Vicious95Z28; Dec 16, 2019 at 03:59 PM.
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Old Dec 16, 2019 | 11:23 PM
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You want one for an 02 Chevy Express van with the 5.7 Vortec.
OE# 10456288
AC Delco 213-324
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Old Dec 17, 2019 | 04:33 AM
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Thank you I just ordered one
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Old Dec 17, 2019 | 07:08 AM
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What makes the sensor for the Van different?
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Old Dec 17, 2019 | 10:56 AM
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Whatever the case may be, it must be an OBDII knock sensor.
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Old Dec 20, 2019 | 12:54 AM
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Originally Posted by Vicious95Z28
What makes the sensor for the Van different?
The '02 Chevy Express van was the only vehicle that used an 0411 pcm AND the correct knock sensor that fits our cars.
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Old Dec 20, 2019 | 07:18 AM
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Originally Posted by AdsoYo
The '02 Chevy Express van was the only vehicle that used an 0411 pcm AND the correct knock sensor that fits our cars.
I guess I should’ve been more specific... that part I knew but what I was really curious in was If it’s looking for parameters in a different range. My bad, sorry.
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Old Jan 10, 2020 | 03:56 PM
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So I replaced the knock sensor and the car is making way more power now but I still have the surging at 35 to 45 mph. So on to the next thing.
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Old Jan 10, 2020 | 04:52 PM
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Originally Posted by madhatter
You want one for an 02 Chevy Express van with the 5.7 Vortec.
OE# 10456288
AC Delco 213-324
Which is the same sensor as the computer controlled Q-Jets, early TPI and TBIs, and all 96-02 5.7 Vortecs.
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