Hi, please help, can't seem to find a problem why my car is running rich. I was always bad since i bought the car i was getting 13-15 mpg with only intake. Changed plugs and wires and O2 sensor. It got a little bit better. I drove to florida and got a bonez hi-flow cat and got rid of the pre-cat and i was getting 17mpg. The day after i came back the car was hesitating and backfiring. The next day it was fine again. But ever since then i only get like 7 mpg. If anyone can help please do.

 

This is a shot in the dark, but try checking the connectors to your ECU. Convertibles have a tendancy to get wet inside and it'll somewhat corrode the copper in the harness. A little baking soda & water or a Tarnex soaking can make everything good again.

When I checked mine, the connecters were blue/green like the Statue of Liberty.

 

No the car hasn't hesitated since that one day. In the morning it starts up fine like nothing is wrong. How do i check the codes from the ECU myself? Thanx

 

http://www.johnr.com/cpucodes.html

 

hi again, i tried checking for the ECU codes but it didn't give me any numbers. i think i did it right because the cpu light went off when usually it stays on. What else i can do? PLEASE HELP!