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09-02-2024, 11:21 AM
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#1
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Junior Member
Join Date: Sep 2024
Posts: 2
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Heat shield for knock sensor 2 on 8.1 Chevy with workhorse chassis
I am having a problem with knock sensor 2 on 8.1 Chevy with workhorse chassis. It seems that there is a heat shield missing on knock sensor 2. My repair shop has changed the knock sensor two times and tried insulate it but it gets to hot and destroys the knock sensor. They can't find the heat shield part anywhere. Any suggestions on where to that part or other ideas to fix it? Thank you, Ray
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09-02-2024, 11:23 AM
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#2
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 56,192
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Hi Ray! Welcome to IRV2! We’re sure glad you joined the gang here! 
Hopefully someone will be along that can help with that! Have fun and keep her between the ditches!
Good luck, happy trails, and God bless! 
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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09-02-2024, 11:26 AM
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#3
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,786
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Are you getting a Check Engine Light (CEL) and, if so, what is it?
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Put a tent over this circus.
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09-02-2024, 11:48 AM
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#4
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Junior Member
Join Date: Sep 2024
Posts: 2
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Heat shield for Knock sensor 2 on a 8.1 Chevy with workhorse chassis
Yes, I get the engine light on and odb reading confirms it us the knock sensor 2. The rig looses power and can only go about 10 miles an hour. If you stop and let it cool then it will work again until overheat happens. The overheating it damaging the damaging the knock sensor. Never had this issue before and I don't know if there is a heat shield for it but something has changed.
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09-02-2024, 11:54 AM
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#5
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Senior Member
Join Date: Jan 2018
Location: SF Bay Area
Posts: 1,311
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I would suggest the shop hand bend up a heat shield, that can be bolted or clamped into place. We clamped a heat shield to our Banks header to protect the starter. Perhaps the shop can make something simple for you, using one of two of these to bolt that hand made heat shield.
https://www.ebay.com/p/252065322
Quote:
Originally Posted by Stanclan65
I am having a problem with knock sensor 2 on 8.1 Chevy with workhorse chassis. It seems that there is a heat shield missing on knock sensor 2. My repair shop has changed the knock sensor two times and tried insulate it but it gets to hot and destroys the knock sensor. They can't find the heat shield part anywhere. Any suggestions on where to that part or other ideas to fix it? Thank you, Ray
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__________________
Always bring your A game.
1996 Flair 29V, 454 TBI, 4L80E. Your life is your story, don't let someone dictate your story.
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09-02-2024, 08:13 PM
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#6
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Senior Member
Join Date: Jun 2016
Location: SW Louisiana
Posts: 9,325
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I had a similar issue on mine, it turns out that the exhaust donut was leaking causing hot exhaust to be blown on the O2 sensor.
__________________
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 1110 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates
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09-02-2024, 10:59 PM
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#7
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Jul 2002
Location: Camarillo, CA ---Back in the house after 9 yrs fulltiming
Posts: 1,736
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Quote:
Originally Posted by Isaac-1
I had a similar issue on mine, it turns out that the exhaust donut was leaking causing hot exhaust to be blown on the O2 sensor.
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X2
Check down there with the engine running to make sure you are not blasting it with hot exhaust. My donut had a little piece missing and the knock sensor was getting blasted.
Good luck,
Bill
__________________
Bill & dear wife Helen, Last of the Chieftains 39T
2004 W22, UP tune, Banks headers, Koni FSD, Safe-T-Plus, SMI brake
2017 Lincoln MKZ Hybrid towed 4-down or my 2008 Jeep Wrangler JK
![https://www.irv2.com/attachments/signaturepics/sigpic23522_1.gif]](/attachments/signaturepics/sigpic23522_1.gif)
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