LT1 Low Resolution question....
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Joined: Oct 2000
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
LT1 Low Resolution question....
Gentlemen,
I've got an issue w/my LT1 that I'm trying to diagnose. To help me with my diagnosis, I'm using a "period correct" OTC Monitor 4000 scan tool. I took a recording while the car was doing the symptom and what I don't "get" is what the numbers represent, that are displayed under the "HiRes" and LoRes" displays? During the symptom, the Low Res signal only shows "002"....while the symptom is NOT happening, the Low Res shows a variety of numbers, constantly jumping all over the place.
Can someone shed light on what that number represents or means? Thanks.
I've got an issue w/my LT1 that I'm trying to diagnose. To help me with my diagnosis, I'm using a "period correct" OTC Monitor 4000 scan tool. I took a recording while the car was doing the symptom and what I don't "get" is what the numbers represent, that are displayed under the "HiRes" and LoRes" displays? During the symptom, the Low Res signal only shows "002"....while the symptom is NOT happening, the Low Res shows a variety of numbers, constantly jumping all over the place.
Can someone shed light on what that number represents or means? Thanks.
Thread Starter
Supreme Member
Joined: Oct 2000
Posts: 3,236
Likes: 808
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: LT1 Low Resolution question....
EDIT: Here is a vid of me doing a frame by frame play back of the recording. You can see the:
RPM...HiRes...LoRes....TPS%
Codes.MAP....Left 02....Frame #
When I get to ^5000 RPM, the low res signal displays only "002" for the duration....
RPM...HiRes...LoRes....TPS%
Codes.MAP....Left 02....Frame #
When I get to ^5000 RPM, the low res signal displays only "002" for the duration....
Thread Starter
Supreme Member
Joined: Oct 2000
Posts: 3,236
Likes: 808
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: LT1 Low Resolution question....
Anyone? Low Res "counts" (?) and what that number means?
Thread Starter
Supreme Member
Joined: Oct 2000
Posts: 3,236
Likes: 808
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: LT1 Low Resolution question....
This response has been overwhelming. :/
Are there no GM techs or any tuners who know what the Low Res "number" represents or tells us?
Are there no GM techs or any tuners who know what the Low Res "number" represents or tells us?
Joined: Jan 2013
Posts: 328
Likes: 7
From: Gresham Oregon
Car: 1985 Z28 & 1997 Z28 SS SLP
Engine: Sbc 305 TPI & LT1
Transmission: 700r4 and A4
Axle/Gears: 9 bolt Posi 323 & Posi 323
Re: LT1 Low Resolution question....
That happened to me once, turned out to be opti
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