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2013 Chevrolet Tahoe LS 2WD 4dr 1500

2013 Chevrolet Tahoe
Trim Info:
Rear Wheel Drive, Sport Utility Vehicle
15 (2012) mpg city / 21 (2012) mpg hwy
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July 15, 2012, 5:13 pm

Johnny R
 

Question: accellration

ok i have a 1999 chevy tahoe 5.7 liter vortex cranks and idle fine now if you give gas slowly it runs fine but if you try to stomp the gas pedel to the floor it will spit sputter and back fire and try to die you let off the gas and it will go back to ideling fine change the sparkplugs wires and plugs change distubutor and rotor change the cam sensor fuel filter and it not giving any codes on a obd scan tool check engine light is not on i am lost somebody please help if you can e-mail me at weberr24@hotmail.com it will be easer for me .

thank you

johnny



July 22, 2012, 3:50 pm

Tyler O
Expert Mechanic

Sounds like the ignition timing is way off, or you have a large air leak, Maybe a bad airflow meter etc.


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July 22, 2012, 5:57 pm

Johnny R
 

cleaned th mass air flow sensor ,o2 sensor egr valve check the fuel pump pressure 50 with key on also with motor runnning but the gauge i ueed was supposed to be for a/c system like to put feron in a outside unit with don,t know if that makes a diff was told it was supposed to be at 60-66 psi the scan tool says it is running 14 degress atdc is that right also if it was out of time would,nt i get a code no codes on and scan tool service engine light not on was told it was my fuel pump weak since pressure is low and no codes


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July 22, 2012, 6:01 pm

Johnny R
 

sorry 14 degress btdc


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July 22, 2012, 11:06 pm

Tyler O
Expert Mechanic

Does the pressure change with load?


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July 23, 2012, 10:10 am

Johnny R
 

no the pressure stays the same


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