BigHops99se

I guess now that it's paid off....time to do all the maintenance. First the coil packs and now this.

I thru a code today and it is 0510 but it is an undefined code when i was checking the diagnosis. Any ideas?

99SEL4ME

If it's undefined, just reset it and keep an eye on it. Happens all the time. These cars are code happy. Reset your ECU. Check the stickies for know how.

BigHops99se

yeah i just reset it so we will see...i have noticed my gas mileage has plummeted even after replacing the coil, so i'm concerned something is up

BigHops99se

no one else have any ideas?

jackson3837

It's the oxygen senson behind the cat. I have the same code. See the sticky titled "ECU Fault Code Diagnosis" please

DR-Max

iTrader: (3)

Shouldn't you be doing proper maintenance on your car even when it is still new and in your case unpaid for?? If you maintain it well your call will treat you right for a long long time.

deeloc

i have the same code 0510, it is the rear o2 sensor. mine triggers the cel about once a week. it seems to be the same code as 0707. i sometimes get 0707 or 0510 or both. the rear 02 should not however effect performence or gas mileage.
does anybody know the difference between the 0707 and 0510, they appear to be the exact same thing according to the stickies

jp_cout

it's not affecting the gas mileage (or very little decrease) but the tip of the exhaust is becoming black with unburned fuel...the same way it was doing with my blown knock sensor..but the performance is still the same as stock..

BigHops99se

I always do proper maintenance on my car, treating it like it is part of the family!

Shannon and Ian

iTrader: (1)

Thank gosh I became a contributer. This is my problem as well.

Shannon and Ian

iTrader: (1)

DAMN, changed the 02 and the problem persists. I come to realize it is a 10 05. Duh! 10 long 5 short. What an idiot I am.