Oh no....!
Thread Starter
Instructor
Joined: Jun 2001
Posts: 187
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From: Brookhaven, MS
Oh no....!
Can someone explain.....my car (94 auto LT1) will just die, it will be sitting in the garage idle-ing(sp) and will die. Its almost like someone turned the key off. I got codes 16 and the knock sensor code. I have changed the opti three times already, and hope that it is not the opti again! ........anythoughts?
Thread Starter
Instructor
Joined: Jun 2001
Posts: 187
Likes: 0
From: Brookhaven, MS
Originally Posted by sraft
Have you checked the crankshaft sensor? The signal is tied into the fuel pump relay. One would think that this should give an error code.
any more thoughts about code 16? If it is the Opti again I am ready for plan B!!
Delteq?
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Originally Posted by BlackonBlack
Can someone explain.....my car (94 auto LT1) will just die, it will be sitting in the garage idle-ing(sp) and will die. Its almost like someone turned the key off. I got codes 16 and the knock sensor code. I have changed the opti three times already, and hope that it is not the opti again! ........anythoughts?
Sounds like a fuel problem
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by sraft
Have you checked the crankshaft sensor? The signal is tied into the fuel pump relay. One would think that this should give an error code.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by tjwong
Your car doesn't have a crank sensor so no need to worry about that. Code 16 is the low resolution sensor failure which is in the opti unit. Check the harness conection at the opti and also at the other end of the short jumper harness from the opti to the main harness. If there is any corrosion there, it can cause this problem. Also double check the continuity of the connections between the opti connector and the PCM harness connectors. If this is all OK then it is the opti unit
Thread Starter
Instructor
Joined: Jun 2001
Posts: 187
Likes: 0
From: Brookhaven, MS
Originally Posted by tjwong
Your car doesn't have a crank sensor so no need to worry about that. Code 16 is the low resolution sensor failure which is in the opti unit. Check the harness conection at the opti and also at the other end of the short jumper harness from the opti to the main harness. If there is any corrosion there, it can cause this problem. Also double check the continuity of the connections between the opti connector and the PCM harness connectors. If this is all OK then it is the opti unit
Will check out the connections in the morning.....We have been through this Opti-Spark replacement 3 times now....What are your thoughts on the Delteq system and others???BlackonBlack
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Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
I would try the LT4 vacum conversion about 30 dollars from chevy.
I would check that water pump.
To go through 3 on a 94 is alot I have 90 thou miles on mine and blow nitrous and drive it hard and only replaced it once at 70 thou.
I did do the conversion.
I would check that water pump.
To go through 3
on a 94 is alot I have 90 thou miles on mine and blow nitrous and drive it hard and only replaced it once at 70 thou.I did do the conversion.
