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Really Bad 502 Knock Count At Idle

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Old Jul 14, 2006 | 11:50 PM
  #1  
1Bad3rdGen's Avatar
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From: Chandler Town
Car: 92 Firebird Convert & 91 Camaro RS
Engine: 305 L03 TBI
Transmission: 700r4 & T5
Axle/Gears: Stock
Really Bad 502 Knock Count At Idle

so tonight in phoenix az its 105f right now and i did a datalogg because ive been having this problem with overheating so i figured i would datalog to verify if my temp gauge is accurate because my gauge would peg out at 260f with ac on so after tonight the most the coolant sensor read was 231f and thats with high speed and reving and ac. after a long datalogg at idle i started realizing i was getting 502 knock counts at idle after all the rhigh speed and rev. and i didnt here any knock or i couldnt because my exhaust is kinda loud. but is this good or bad. i can post the knock count log. im gust tired of all these inaccurate sensors. and i hope theres nothing wrong internally since this engine was mildly build about 25k miles.
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Old Jul 16, 2006 | 12:31 PM
  #2  
1Bad3rdGen's Avatar
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From: Chandler Town
Car: 92 Firebird Convert & 91 Camaro RS
Engine: 305 L03 TBI
Transmission: 700r4 & T5
Axle/Gears: Stock
well i guess i'll just figure out myself why im getting some many knocks.
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Old Jul 16, 2006 | 03:24 PM
  #3  
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
I meant to post to this last night, forgot, it has been a crazy week. There is a good possibility that the 502 counts are from the engine starting. The starter engaging will be picked up as knock. Another item is that most calibrations ignore knock counts during idle conditions.

So even if knock is picked up during idle, the SA isn't retarded.

Do the counts keep increasing? If not I wouldn't worry about it.

As for overheating: fan on and blowing in the correct direction, air dam in place, correct water pump (serp setups use a reverse rotation pump), thermostat good, cleaned out the area between the A/C condensor and radiator, timing set correctly. . .

Are you buring your own PROMS (tune)?

RBob.
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Old Jul 16, 2006 | 10:14 PM
  #4  
1Bad3rdGen's Avatar
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From: Chandler Town
Car: 92 Firebird Convert & 91 Camaro RS
Engine: 305 L03 TBI
Transmission: 700r4 & T5
Axle/Gears: Stock
rbob thanks for the reply. its just in idle that i get the knock. and no the knock doesnt rise. and for the overheating i got that solved. false temp gauge reading. thanks
martin
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Old Jul 21, 2006 | 05:38 AM
  #5  
busta9876's Avatar
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From: West Plains, Missouri 65775
Car: 1967 C10 Pickup
Engine: TPI 305, Megasquirt
Transmission: TH400
I've noticed you will get a few counts if you shut off the engine. The computer stays alive a few seconds after the key is shut off to reset the IAC, and I always see knock when the engine stops turning.
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