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Thread: neg.timing?
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09-24-2006, 07:35 AM #1bowtieguy45Guest
neg.timing?
Hi,I have a 96 Impala SS with the LT1.When I connected my scan tool I noticed that the advance timing reading was in the -(neg.)When I increase the throttle it goes farther -(neg.)Is that the way the timing works on these cars?I thought it was sopossed to go + on the timing?
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09-24-2006, 03:48 PM #2
thats not supposed to happen. scan a friends car with a lt1 in it and see if it reads the same. if so i say scan tool settings are off. if thats not the case , i cant tell you where to begin looking for that false signal. is it a actron scan tool? with a OBDII plug in?
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09-24-2006, 04:04 PM #3
- Join Date
- Jun 2006
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- new york
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white- 96 vette
my corvette does the same thing.. i have an actron scan tool..
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09-24-2006, 08:50 PM #4bowtieguy45Guest
I checked my wifes 03 grandprix and it was +(pos.)and advanced when given the gas like I thought it should.Guess LT1's are a strange breed?It sure runs fine,I just thought the neg.timing was strange.
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09-25-2006, 07:35 AM #5
Wouldn't negative timing also mean retard timing? Or is that not the same thing? I would think so in saying that the computer just retarted your timing as opposed to advanced it.
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09-25-2006, 01:18 PM #6
yes you are correct.
well if it reads positive on your wifes gp and it reads - on the other guys scan tool, i guess there might be a issue with the scan protocall in the scan tool for the lt1 , it has to be limited to the lt1 since the gp scans normal. call actron , see what they have to say.
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09-28-2006, 08:56 PM #7
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