Hello everyone! I have a 99 Camaro V-6 and it has problems. It died and I changed the fuel pump (module) which fixed it for a couple of weeks. Now, it is running very rich and won't rev at all. It idles ok, but when the accelerator is pressed, it stumbles and misses and won't go over 2k RPM even with the it floored.

The car hasn't thrown any codes that I can read. I did a search and checked the vacuum line on the fuel pressure regulator, but there wasn't a leak. I also checked for obvious vacuum leaks, but didn't find any.

I read a great deal during the search, but I am at a loss as to where to start the troubleshooting process. I'm not really familiar with these cars, but have some mechanical ability. From what I have read, I learned it could be:

O2 sensor(s)
TPS
IAC
CAM or Crank Sensor
None of the above
Clogged Catalyst
MAP

If anyone could help me out with this, I would greatly appreciate it.

 

Add pluged exhaust to your list (AKA pluged Cat)

 

I found a scanner to use so I can look at the codes, but I have to get the car to the scanner

I got the car on the hauler and will (hopefully) have some solid data from the sensors as to what is truely going on later today or tomorrow.