1994 corvette LT1 evap c26 code
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3rd Gear
Joined: Jun 2026
Posts: 3
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From: Rio vista, california
1994 corvette LT1 evap c26 code
Hello I perchest a 1994 c4 with the LT1 and a six sped trans . I had myb fuel pressure regulator go out , I found the problem when I unplugged the vac line from manifold and fule came squirting out . It ended up filling crankcase full of fuel.i drained and replaced oil new fuel pressure regulator , had to also replace the TPS because it ended up reading low upon testing resistance, I cleared all codes and did the ecm calibration. Car started but still throwing a c26 code . The info I got from Internet says to test evap solenoid and egr vac solenoids , they checked out on resistance. But upon testing for shorts in the wiring The ground control wires are testing 0 on or grounded with all of the ecms 4 plugs unplugged ,and sensors unplugged , and on the 12 volt power wires for each plug got low voltage so I ran power to each solenoid but on the ECM side I have not been able to locate any ECM pin out diagrams that are correct . Any help would be greatly appreciated.
