2003 Chevy Corvette Rough Idle, Dies with no Throttle, Limi

TCOUTY87

MEMBER
2003 CHEVROLET CORVETTE
V8
2WD
MANUAL
26,000 MILES

I start the car and it will idle arond 500-600 RPM. I will push the gas petal and after sputtering it will gain RPMs, but is sounding like it is misfiring. After letting go of the throttle it will fall to 200-300 RPM and sometimes die. When driving it once I pushing the throttle it has alot of power but sometimes sputters and jerks the car. Everytime I come to a stop however it will fall to 200-300 RPM and die.

I have replaced the spark plugs, wires, and MAF with no luck in the problem getting fixed.

3 Replies

FACTORYJACK

MECHANIC
4,159 POSTS

With so low of miles on an 03, how long does it sit and how old is the fuel? I would check the fuel pressure, should be approximately 55-62. Check the fuel filter, and if the fuel is old, add some fresh. Another possibility could include some sticking or dirty fuel injectors.

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Friday, June 25th, 2010 AT 10:44 PM

TCOUTY87

MEMBER
2 POSTS

I drive it a few times a week and have been for months. I go through a tank of gas a week

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Sunday, June 27th, 2010 AT 7:32 PM

FACTORYJACK

MECHANIC
4,159 POSTS

Is there a check engine light? If it is misfiring, there should be. I would start by checking the fuel pressure, as previously stated. You are almost going to need a scan tool, and when it is acting up, check the oxygen sensor operation. If it is going lean, the oxygen sensor values will be low, less than 100mV.

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Tuesday, June 29th, 2010 AT 10:36 PM