Started out Friday replacing my #2 O2 sensor to get rid of my P430 code. Stapped off all 3 bolts connecting the Cat to the exhaust manifold. Started taking off everything and all the lights went out. I then had to respont to the accident where a truck hit a power pole.

Got everything loose and went to bed. Pulled off the manifold Sat morning and used my mig welder to weld nuts onto the stubs (thanks to a post in this forum) and removed stubs. Managed to pick up all the parts in town.

Started putting it all together about 1 in the afternoon. Then my wife comes over and asks if she can help. (I have such a good wife).

Managed to get it all together about 6 pm.

All together I changed the oil, changed the trans fluid and filter, replaced both right side O2 sensors, and dumped trans oil on the floor and wife. :blueangel:

Ron

 

Hey it works every time. :yesnod:

I learnt that from a guy who used to charge all the local garages big money to take out broken studs. He never let them see how he did it, they thought he was a magician :lol:

:cheers:

 

I did find out that I have the original plug wires in place. I was shocked at the price of the spark plugs. 6 and some change each. My front main seal is leaking a little. Future tasks will be an electric water pump. new timing gears and chain, and new plug wires.
Just have to same my pennies.

Ron

 

How often should th O2 sensor be replaced?????
:confused:

 

I just changed mine at 50k, It had 41k on it when I bought it. For the first tank full
after I got it I took it easy, since I never drove a car this powerfull before, and got 19 mpg. I thought that was pretty good for mostly city driving . After changing the o2 sensors I now get about 21 mpg and I dont take it that easy anymore and I get 30-31mpg on the freeway at 65. I was quite amazed at the difference. I wish I had changed them sooner! I cant believe a car that puts out so much HP can get that kind of mpg, No other sports car in the world can touch the vette in this respect!!

 

Deciding when to change an O2 sensor can be tough.

Easy decisions usually involve visible contaminants on the sensor. Should you have a scanner, continuous voltages within a narrow range are suspect.
A good volt meter will show ranges conspicuously low or high.

The more difficult diagnosis involves "lazy" O2 sensors. Participated in a clinic where the instructor had a volt meter hooked up to a sensor removed from the car, heated it with a propane torch, and noted voltmeter readings. "This would be classifed as a slow O2 sensor". Darn thing looked good to me. Voltage looked like it jumped all over the place, however according to him, not quite fast enough. Again, should you have a scanner, crosscounts, the number of times the senors passes through 14.7 to 1 can be revealing.

In my opinion, replacement around 50,000 miles would classify as preventive maintenance. Having said that, I have driven vehicles over 150K without replacement. On my 90 Corvette, changed out a Y pipe and threw a new one in just cause it was easy. Tough to say but they are cheap and not difficult to replace. Very important item.

Probably didn't help much but the advice was free.

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