Mark Preus

Im starting to think my car is running real rich. If your behind the car while its idling for awhile it starts to stink. Also if I get on going through the gears while driving I can smell gas? Im starting to wonder if the car isnt burning all the fuel. I just put new caps and rotors and coils on the car. The wires are the 150,000 mile originals though. I ordered some yesterday. Do you guys think that could be the issue? Any advise would be appreciated. I also noticed the gas milage is a little worse lately. I 2nd day the wires so I should have them tomorrow.

Shamus964

Have you tried running the car on one coil at a time? (disconnect the low voltage lines leading to the the coils one at a time)

Crystal Cranks

Failed O2 sensor?

Mark Preus

Yes it runs on both coils

Laker

+1

Are you using the original cat?

Mark Preus

Not sure I'll have to look. Shouldn't it throw a check engine light though if the o2 was bad?

Laker

perhaps,
give this a shot:
http://www.durametric.com/porsche964faultcodes.aspx

Jim Richards

It sounds like a bad O2 sensor to me, too. A diagnostics tool like Laker posted would be helpful here to be sure.