Thanks for all the replys guys.

I swapped the engine because the old one blew........to pieces. I first discovered this forum because I couldn't figure out why the engine vapor locked while going 75 down the highway. Well you all know the reason. I replaced the UIM and things were fine. However, after some time on the road, the engine went, I assume due to the damage that was caused from the vapor lock a year earlier. I picked up a junkyard special with 50k on it and dropped it in. I dissected the UIM and LIM to make sure all gaskets and plastic walls where intact and not showing any wear. Everything looked good, so I pressed on and drove problem free for about 6 months until the tranny went. I replaced it with another junkyard tranny and still had power issues and the car kept stalling. No more shad tree work for me, so I took her to a pro. Bad Cat. Probably from all the crap she blew out of the engine when she blew earlier. So the car now has a low mile engine and tranny for her age, plus a new Cat (and a new oil pressure sensor from whacking it off when installing the engine ) I replaced the engine in early 05, replaced the tranny last winter and the Cat around April of last year.

Anyhow, no sulfur smell just burnt road kill. And yesterday after leaving her run in the parking lot for about 30 minutes so she was warm to drive home, I noticed a puddle of oil about the size of a dinner plate under her, coming from the oil pan area. I've driven her a few times since and noticed no more leaking, and I topped her off just to see. I'm thinking the smell and oil are seperate issues. The smell has been around for about 3 or 4 weeks now. And like I said, the Cat was replaced this past summer.....I think Julyish.

Any more thoughts? I did not check the O2 sensor, but assumed if it was bad the technician would have said something, but I'm not naive enough to believe that will always happen. Anything else?

Oh yeah, and now I think the alternator is going. I have to jump her everytime I drive the last few days. $120 is a little hard to swallow right now, so I just carry my portable jumper with me.

That'* a puddle of oil. Best to crawl under and see if it appears to be oil pan or pressure sender.

Now that you mention it, I thought the pressure gauge has been acting funny. I chalked it up to the electrical probs. Probably all it is. WOn't be the first time I've replaced it, just a pain in the tush.

And if your mechanic replaced that Cat without replacing the O2 sensor he missed the boat, IMO. Many times, the Cat gets ruined simply because of a failed O2 sensor.

A bad sensor can incorrectly interpret the air/fuel mix and create a rich burn. Over a period of time this will ruin your Cat converter.

It would surprise me if your O2 sensor was any good. It'* not a very expensive item to replace and if you have replaced the UIM, LIM gaskets, and Cat and not the sensor, I suggest you do that now.

Oh, and find out what is causing that oil loss. That is NOT a small amount to be there after 30 minutes.

Sender is actually pretty easy if you remove the passenger side tire.

Being that you sent much coolant etc through the cat previously. It was probably due for some help. I'd check the O2 soon though. You don't want to replace a good part...and you don't want a bad part to wipe out a new good part.

Hope it'* not your rear crank seal I've been caught dripping with junkyard parts often enough that now I usually replace the front pump seal on the trans and at least the rear crank seal on engines before they go in.

AAgghhhh! Don't jinx me! I'll have to put her up on jacks to take a look. Prolly this weekend or so, and pop that alternator off for a check. Any special tools for that O2 sensor or just a proper size wrench and/or crescent wrench?

There actually IS a special O2 sensor wrench you can pick up at your local parts store, but many have been able to do it without. Especially if you have a good tool selection, like it sounds to me you do.

Of course, if your like some of us, you'll take any excuse to add a new tool to the toolbox, lol.

OK, so I have another little quandry. last night I was on the highway and my dash dinger kept going off. It took me a while to figure it out, since I wasn't getting any lights. Whenever I hit 75 mph the dinger would go off. Now.........I appreciate my car letting me know that I was speeding, but it has NEVER done that before. I couldn't believe that that was why it was dinging so I kept doing it........when the HUD said 75 the dinger would go off and as soon as I let off and she went to 74 the dinger would stop. Very strange...anyone ever hear of this one?

Never....

My first thought would be that one of the lights for a warning message is burnt out and you. How did the gauges look, oil/temp/alt?