C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Some questions 92 LT1

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Old Jul 8, 2011 | 02:56 PM
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Pietro Bisanti's Avatar
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Default Some questions 92 LT1

Hi guys,
I recently bought a 92 LT1 Vette and I am asking your opinion about these issues:

1) At startup the ABS ACTIVE light doesn't appear as a self-test of the ABS, although I checked that the ABS works, infact it kicked in during some hard stop and its light appeared on the control panel

2) Despite the engine runs smoothly I can smell some gas coming out of the exhaust, as if the car is running too rich

3) The speed indicated by the digital dash in incorrect, at least of minus 20 km/h

I appreciate any comment!

2) Although my engine runs smoothly I
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Old Jul 8, 2011 | 04:11 PM
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Is the car stock, any modifications?
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Old Jul 8, 2011 | 04:57 PM
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Check the bulb for the ABS light; it may just be burned out.

You should start your diagnostic process by pulling the engine codes through the ALDL and see what you discover.
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Old Jul 8, 2011 | 06:36 PM
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This is probably a stupid question, but regarding the speedometer, are you sure it is set to display metric units and not english?
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Old Jul 8, 2011 | 11:56 PM
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Originally Posted by Pietro Bisanti
Hi guys,
I recently bought a 92 LT1 Vette and I am asking your opinion about these issues:

1) At startup the ABS ACTIVE light doesn't appear as a self-test of the ABS, although I checked that the ABS works, infact it kicked in during some hard stop and its light appeared on the control panel
Check bulb, mine burned out


2) Despite the engine runs smoothly I can smell some gas coming out of the exhaust, as if the car is running too rich
OHM injectors, if they are under 12, replace and Speed Density cars ECM do not handle change well. Also check O2's and fuel pressure regulator

3) The speed indicated by the digital dash in incorrect, at least of minus 20 km/h
Did someone change the gears or VSS?

I appreciate any comment!

2) Although my engine runs smoothly I
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