2002 Chevy Corvette Fuel problems

GENOUCH

MEMBER
2002 CHEVROLET CORVETTE
V8
4WD
AUTOMATIC
40,200 MILES

I have had the car to run out of fuel with the gage showing 3/8ths tank of fuel. Also I had only driven about 175 miles after filling up. I am told that the car has two tanks and that one of them may not be getting fuel from the other like it is supposed to. Can you explain how this works and what can be done to keep it from happening again.

1 Reply

BRIAN 1

MECHANIC
1,030 POSTS

It has 1 gas tank, but it has a primary LH part of the tank and secondary RH part of the tank and a jet pump that transfers gas from the primary to the secondary. This info might explain, The fuel system is designed to use the fuel in the RH (secondary) tank first and then the fuel in the LH (primary) tank. Moving from gage Full to Empty, the RH sender voltage will go from 2.5 volts to 0.7 volts, then the LH sender will go from 2.5 V to 0.7 V. If at any time the RH sender voltage is higher than 0.8 V while the LH is lower than 2.3V, there is probably a jet pump transfer or stuck float issue. The lack of jet transfer could be due to the lack of system pressure or a clogged or inefficient jet pump. When the fuel gauge is indicating approximately half full/empty or lower, the left hand tank will be full and the right hand tank will be empty under normal operating conditions. Might have a level sensor problem or jet pump problem or low fuel pressure. Post back with any other questions.