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post #1 of (permalink) Old 04-02-2008, 06:50 PM Thread Starter
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looking for gm tbi sensor data

I have scan software and it works very well I can see all the info from the sensors. But what i dont know is what the data should be for each.. So i dont know if something is out or not...
Any help would be sweet...

Note: TBI for a 89 Chevy s-10 blazer. 4.3l v6

88 YJ SOA2.5" 2"BDY Locked F/R Chevy 4.3 NVG241OR 4.56's 36x12.50
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post #2 of (permalink) Old 04-02-2008, 07:25 PM
I Might Just Know What I'm Talking About
 
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Specifically, what data are you talking about? Most of it is self explanitory. For example, the engine temp should pretty much agree with your dash....that was how I was able to figure out that the PO on my engine had put in a colder t-stat.

About the only one that might need explaining is the O2 sensor and the block reads/learn counts. On the O2 sensor, it does not really look at the voltage but rather how often it crosses mid point and how long it stays at either range. Bascially, if it sees a rich signal (voltage above 0.5v), it leans it up until it sees the voltage go below 0.5v. When that happens, it goes rich again. It keeps repeating this with the objective of the signal bounching back and forth as fast as posible...which in turn indicates that you are pretty much running at the right ratio.

If you have any specific questions, give me a call....I might be able to help.

AKA DDawg16
84 CJ7, SOA, 5.7LTBI, 4L60E, 35"x12.5, 4.10 gears, F/Det, R/ARB, Full Roll Cage,
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