bad gas mileage

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bad gas mileage

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Chevrolet >> Brand Review >> Computer & Fuel Systems >> bad gas mileage

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bad gas mileage - 5/20/2008 8:24:04 PM

jleone

Posts: 2
Joined: 5/20/2008
Status: offline

Hello. I am new here. I have been having trouble with very bad gas mileage. I took my 97 chevy into the dealership and paid 100.00 dollars to get it checked and they told me that I needed new catylic converters. I get about 6 miles to the gallon. First I changed the o2 sensors and about two hours after I put them on the truck lost all power. I had to barely push the gas and it would go. I forgot how much power it actually had. Then all of a sudden it lost all power again and I could tell that the o2 sensors had went out again. People tell me that it could be a variety of things so should I trust the diagnostic test and put new converters or should I try more minor things first . All suggestions would be greatly appreciated.

Post #: 1

RE: bad gas mileage - 5/21/2008 5:53:57 AM

jljbtm

Posts: 28
Joined: 1/1/2008
Status: offline

I have found 2 things to cause converters to clog with carbon (go bad)
Faulty or worn out 02 sensors can be one thing , but also check your coolant sensor.
If this part fails or is weak it will tell the computer the engine is cold then the computer will add fuel.
Check it out.

(in reply to jleone)

Post #: 2