Tsmith
10+ Year Contributor
- 223
- 1
- Jan 23, 2010
-
Colo Springs,
Colorado
97 Eclipse GSX, Auto trans, 16g, VRSF FMIC, 3 inch turbo back exhaust blah, blah, blah.......
Ok so while on the highway two days ago I noticed I was getting an exhaust leak. I was also losing both un-boosted power and boosted PSI. I thought maybe the exhaust leak was pre- turbo and causing the car to not spool properly and maybe a sensor to act up. I have felt my car act this way before and the issue was a plugged Cat. When I found the plugged cat I cleared all the honeycomb out of it so its basically empty now.
Today I went to work on the exhaust leak and found a leak between the manifold and turbo, and also between O2 housing and downpipe. I tightened the bolts on the manifold/turbo leak and it went away immediately. I pulled the downpipe down far enough to grab the old gasket and throw some high temp gasket maker on it and bolted it all back up. Started the car and exhaust leaks were much much better.
I decided to do a compression test because I have never done one on this motor. Everything there was fine. I only include this information so you can have an idea of everything I did today.
When I started my car up again I noticed the CEL on and looked at my gauges. Everything was fine except my narrow band O2 (which is normally stoich on idle and pig rich on full throttle) was as far lean as it can be. While driving home (since I had to get home anyways) I had to be almost 60% throttle or better for it to start to pick up. I also had a bunch of stuttering while driving. Also the transmission seemed to be having a hard time finding the right gear to be in. Decided to pull into Advance Auto to get the codes pulled.
Here's what I got:
P0135 Heated Oxygen Sensor Heater circuit Bank 1 Sensor
P0325 Knock Sensor 1 circuit
P0510 Closed Throttle Position Switch
So I can assume the O2 sensor went bad and maybe while pulling the down pipe I caught the wiring, no big deal. I also see that whoever wired the A/F into the car did so by using a butt connector on the engine side of the O2 harness and some of the wiring is exposed. There is also a wire (same spot) next to the one he spliced that is missing some insulation and could have shorted out on the transmission (maybe causing the O2 to short out).
Does any of this make better sense to anyone else than it does to me?
Why the other two codes if it is just an O2 sensor?
Am I on the right track with replacing the O2 sensor and repairing the messy wiring?
Is there any other damage that could have happened from the possible shorted wires?
Can the codes I have now have anything to do with the Transmission problem?
Any suggestions in advance for anything else I should check/replace from the two codes I have before I try an O2 sensor?
Thanks for your time!
Ok so while on the highway two days ago I noticed I was getting an exhaust leak. I was also losing both un-boosted power and boosted PSI. I thought maybe the exhaust leak was pre- turbo and causing the car to not spool properly and maybe a sensor to act up. I have felt my car act this way before and the issue was a plugged Cat. When I found the plugged cat I cleared all the honeycomb out of it so its basically empty now.
Today I went to work on the exhaust leak and found a leak between the manifold and turbo, and also between O2 housing and downpipe. I tightened the bolts on the manifold/turbo leak and it went away immediately. I pulled the downpipe down far enough to grab the old gasket and throw some high temp gasket maker on it and bolted it all back up. Started the car and exhaust leaks were much much better.
I decided to do a compression test because I have never done one on this motor. Everything there was fine. I only include this information so you can have an idea of everything I did today.
When I started my car up again I noticed the CEL on and looked at my gauges. Everything was fine except my narrow band O2 (which is normally stoich on idle and pig rich on full throttle) was as far lean as it can be. While driving home (since I had to get home anyways) I had to be almost 60% throttle or better for it to start to pick up. I also had a bunch of stuttering while driving. Also the transmission seemed to be having a hard time finding the right gear to be in. Decided to pull into Advance Auto to get the codes pulled.
Here's what I got:
P0135 Heated Oxygen Sensor Heater circuit Bank 1 Sensor
P0325 Knock Sensor 1 circuit
P0510 Closed Throttle Position Switch
So I can assume the O2 sensor went bad and maybe while pulling the down pipe I caught the wiring, no big deal. I also see that whoever wired the A/F into the car did so by using a butt connector on the engine side of the O2 harness and some of the wiring is exposed. There is also a wire (same spot) next to the one he spliced that is missing some insulation and could have shorted out on the transmission (maybe causing the O2 to short out).
Does any of this make better sense to anyone else than it does to me?
Why the other two codes if it is just an O2 sensor?
Am I on the right track with replacing the O2 sensor and repairing the messy wiring?
Is there any other damage that could have happened from the possible shorted wires?
Can the codes I have now have anything to do with the Transmission problem?
Any suggestions in advance for anything else I should check/replace from the two codes I have before I try an O2 sensor?
Thanks for your time!