Joel5.0

Or.....oxy-ace is your friend......

93 LX FiveO

seafoam

Joel5.0

Nope....unfortunately it will not work for those types of problems.....to prevent them....maybe.

Hawk

Well I got the crossover tube off after work yesterday. Talk about clogged. GOOD LORD. I have to go get some cleaner tonight from the parts store, but just from looking at where it connects to the heads, it is just clogged up with oil/trash. For a hole that my pinky would fit in, there is only like a pinhole opening because of all the trash. I am looking forward to getting it cleaned up, reinstalled, and then seeing how the car runs.

Twisted

I don't think cleaning mine made any difference in the way the car ran. Let us know if yours runs any different.

Hawk

Well from what I read, it might solve my slight backfire problem. Here is a link to what I could find out about the system:

http://everything2.com/index.pl?node_id=1459900

Hawk

Well I got everything cleaned up back together and the car runs great. Pulled the codes though and the 94 is still showing up. And yes, I disconnected my battery for a couple of days to clear the memory. Not sure what else to try if anything. Any thoughts? Here is the description of the code, "Transmission TCC circuit/solenoid problem"

Joel5.0

For code 94 you don't have to clear anything....it doesn't get saved in memory.....it's a "real time" test the system does to verify the thermactor is working. The way it works for the test is that the ECM ramps up A/F to a rich state and activates both TAB/TAD solenoids (small solenoids under the EGR solenoid behind the RH strut tower)...and checks both O2's switch back to a lean state (due to the air been injected)......since you only have the problem on one side (driver side). Suggest to check the vacuum lines going to the TAB/TAD solenoids and the lines that activate the bypass and diverter valves.....something as simple as a broken or misplaced line could be causing the code.

Also make sure engine is at op temp, hold the engine @2400 rpms for ~2 minutes, and run the KOER immediately after.

Hawk

Thanks Joel, I will check the lines. They don't happen to be denoted on your diagram do they? Thanks again for your your knowledgeable insight.

Joel5.0

Nope.....but this one should help you ID them.......