Knock sensor, is the work best done replacing them after coolant replacing
04-01-2015, 08:03 AM
#21
04-13-2015, 09:17 AM
#23
04-13-2015, 06:04 PM
#26
Knock sensors
I bought my 1996 Corvette new and have changed the anti-freeze every five years and removed and installed the same knock sensors to drain the engine block of all that coolant. In the past month have put over 1500 miles on the LT4's original knock sensors. Another coolant change next year, will do the same.
04-13-2015, 07:04 PM
#27
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Member Since: Aug 2012
Location: Nashville TN
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Change them.
My 92 would not pass emissions due to huge amounts of unburnt fuel exiting the tailpipes. So bad it burned your eyes standing behind the car. No codes were ever generated.
2 new 02 sensors and I passed with flying colors and the car must have gained 100 hp.
Moral of the story....... Old sensors lose accuracy and send faulty data to the ECM but can still work good enough to not generate a SES code.
My 92 would not pass emissions due to huge amounts of unburnt fuel exiting the tailpipes. So bad it burned your eyes standing behind the car. No codes were ever generated.
2 new 02 sensors and I passed with flying colors and the car must have gained 100 hp.
Moral of the story....... Old sensors lose accuracy and send faulty data to the ECM but can still work good enough to not generate a SES code.
04-13-2015, 07:16 PM
#28
Change them.
My 92 would not pass emissions due to huge amounts of unburnt fuel exiting the tailpipes. So bad it burned your eyes standing behind the car. No codes were ever generated.
2 new 02 sensors and I passed with flying colors and the car must have gained 100 hp.
Moral of the story....... Old sensors lose accuracy and send faulty data to the ECM but can still work good enough to not generate a SES code.
My 92 would not pass emissions due to huge amounts of unburnt fuel exiting the tailpipes. So bad it burned your eyes standing behind the car. No codes were ever generated.
2 new 02 sensors and I passed with flying colors and the car must have gained 100 hp.
Moral of the story....... Old sensors lose accuracy and send faulty data to the ECM but can still work good enough to not generate a SES code.
