Coincidence or bad luck
07-22-2014, 06:08 PM
#1
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Coincidence or bad luck
Driving my 94 LT-1 home from work it stalled out and the check engine light and service ASR light came on. It took a little bit for it to start back up. When it did both lights still where on. Got home shut it down. Did a quick visual look and everything was fine. Started it back up and both lights were off.
07-22-2014, 08:42 PM
#2
Le Mans Master
You should check for codes in the computer...here is how....
Retrieving CODES on 1994 & 1995 Corvette:
A good link here on the forum is:
http://forums.corvetteforum.com/c4-g...n-96-cars.html
Most of the info below was taken from the link below:
http://tech.corvettecentral.com/2011...trouble-codes/
Here is the paper clip method to retrieve the DTCs On a 94/95 you can check the codes with a paper clip as follows:
You short pin "12" to pin "4" and turn the ignition switch to "On" without starting the engine. The pins are numbered from the top ...left to right. Total of 8 pins in each row. #4 and #12 line up with each other.
The speedometer will display any codes using the same protocol as the 1990-1993 model but there are some changes in the designation for the modules plus additional modules are added:
Module "1" is still the CCM module.
Module "4" is now called the PCM module (Power train Control Module) because automatic transmission computer control was added to Engine Control Module in 1994.
Module 7 (on the 1996 model only) is the RTD module. (This is the Real Time Dampening module which replaced the Selective Ride Control module in 1996).
Module 9 is the ABS/ASR module number from 1994 through 1996.
Finally, Module "A", the DERM (Dynamic Energy Control Module --- (the air bag control module) will be requested to show any codes.
Just like the 1990-1993 display, you read the codes on the speedometer (big) and read the module number on the trip odometer (small).
A series of dashed lines for instance “ - - -“ indicates no more stored codes for that module.
This will give you an idea of what happened or what needs to be looked at.
Retrieving CODES on 1994 & 1995 Corvette:
A good link here on the forum is:
http://forums.corvetteforum.com/c4-g...n-96-cars.html
Most of the info below was taken from the link below:
http://tech.corvettecentral.com/2011...trouble-codes/
Here is the paper clip method to retrieve the DTCs On a 94/95 you can check the codes with a paper clip as follows:
You short pin "12" to pin "4" and turn the ignition switch to "On" without starting the engine. The pins are numbered from the top ...left to right. Total of 8 pins in each row. #4 and #12 line up with each other.
The speedometer will display any codes using the same protocol as the 1990-1993 model but there are some changes in the designation for the modules plus additional modules are added:
Module "1" is still the CCM module.
Module "4" is now called the PCM module (Power train Control Module) because automatic transmission computer control was added to Engine Control Module in 1994.
Module 7 (on the 1996 model only) is the RTD module. (This is the Real Time Dampening module which replaced the Selective Ride Control module in 1996).
Module 9 is the ABS/ASR module number from 1994 through 1996.
Finally, Module "A", the DERM (Dynamic Energy Control Module --- (the air bag control module) will be requested to show any codes.
Just like the 1990-1993 display, you read the codes on the speedometer (big) and read the module number on the trip odometer (small).
A series of dashed lines for instance “ - - -“ indicates no more stored codes for that module.
This will give you an idea of what happened or what needs to be looked at.
07-23-2014, 08:25 PM
#3
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just did that and got code H-72 that is Vehicle Speed Sensor Loss. from http://www.digitalcorvettes.com/foru...ad.php?t=54543
why would that make the engine stall??
why would that make the engine stall??
07-24-2014, 12:06 AM
#4
Le Mans Master
The "H" indicates it is a historic code from the past. Clear the codes and see if anything pops up again. There could be multiple reasons for the car to stall out and not register a code.
Was the gas tank full or low? If you have a fuel pressure gauge, I would check fuel pressure.
It could also be electrical...opti related.
Was the gas tank full or low? If you have a fuel pressure gauge, I would check fuel pressure.
It could also be electrical...opti related.
07-24-2014, 07:04 AM
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Fuel tank 3/4 full. This weekend I will have access to a snap on scaner so I will be able to diagnose it further. And hopefully fix it.