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

L98 Code 13

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Old May 31, 2016 | 04:57 PM
  #1  
JWMorrisey's Avatar
JWMorrisey
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Default L98 Code 13

Hey Gang
'86 Coupe L98/DN 4+3


The car sets code13 and trips the SES intermittently.


It only happens at light throttle at highway speeds after 8-10miutes of driving.


Fuel pressure/delivery are verified and base timing/min airflow adjustments are set. Connectors and wiring are inspected/checked.


O2 sensor (left bank) has been replaced. I'm either blind or totally missing a sensor in the right bank.




What am I missing?
Jonathan.....


BTW The DN doesn't shift into overdrive and I'm driving the car as a normal 4speed car.
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Old May 31, 2016 | 08:42 PM
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I think it only has the one. I would look for a melted wire on the one just replaced.
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Old Jun 3, 2016 | 07:28 AM
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From my 86 service manual

http://members.shaw.ca/corvette86/Code%2013.pdf
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