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2000 chevy 1500 5.3l. Knock sensor code replaced 2 days

later knock sensor code again...
2000 chevy 1500 5.3l. Knock sensor code replaced 2 days later knock sensor code again, 2 weeks later engine lost oil pressure, replaced engine with one out of running 2000 GMC 1500 with 73,000 miles with no codes or issues before being hit on side, 2 days after replacing engine same code, removed code, 3 days later same code with erratic idle sometimes and hesitation while driving very rarely but happens. OEM enhanced scan ran only code is knock sensors. Any ideas?
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Answered in 1 minute by:
10/27/2016
Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 38,835
Experience: 35 years experience with ASE Certs
Verified

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

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What is the actual fault code your getting? Is it a P0332?

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Customer reply replied 1 year ago
P0327

Its not likely you have bad Knock sensor as long as your not over tightening them on the install. I would suspect you have a wiring issue. Have you check the wiring to it?

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Customer reply replied 1 year ago
new connector after code was recorded and still same, but more worried about ruff idle and hesitation. Can these knock sensors cause this?

usually a bad knock sensor will not effect idle but since its the only code setting that would be the one to address first. Was both engine having this rough idle concern?

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Customer reply replied 1 year ago
no

Okay I would be checking the new engine to make sure there are no vacuum leaks and also address the testing for the knock sensor. Are you able to do the testing on the knock sensor If I post them for you?

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Customer reply replied 1 year ago
ok

I have enclosed to sets of steps. The first is the short version and the second set is the long version with the wiring diagram for testing reference. Run through them and see if this will help you determine the cause.

https://dl.dropboxusercontent.com/u/104923897/Knock%20Oct%2027.pdf

https://dl.dropboxusercontent.com/u/104923897/Knock%20Testing%20Oct%2027.pdf

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Customer reply replied 1 year ago
ordered new ones and wiring harness

Hopefully this will get this resolved for you. Let me know how it works out if you will.

Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 38,835
Experience: 35 years experience with ASE Certs
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