Running really rich

Topic: Running really rich (Read 2235 times) previous topic - next topic

Running really rich

Reply #30 – February 19, 2006, 08:04:37 PM

Quote from: CougarSE

Seek have you ever heard of a "crows foot"? Thats what the socket autohole rents looks like, the one they sell though is the long one with a slit in the side. Sounds like you need to rent the tool.

So thats what its called...I have a couple here in 7/8 and 1" sizes. The socket attached wrench

How to get it to stay on the sensor, I don't know. Have a variety of tools on hand but the angle just seems nearly impossible. More importantly, I can't even see the passenger side sensor, just the wire harness. Didn't think these things would be such a pain to pull

Running really rich

Reply #31 – February 19, 2006, 08:15:36 PM

Upon startup, the TAB valve should have vacuum (to send air into the exhaust manifolds). Once the vehicle is in closed loop both the TAB and TAD valves should have vacuum (to send air to the catalytic converter). After several minutes of idling, neither valve should have vacuum (to bypass air).

The oxygen sensor socket has a slit in it that allows you to remove/install the sensor with the wiring attached.

As per the EGR, if you see it getting vacuum and moving...but the computer is give you a 33 (opening not detected)...then you most likely have a sensor problem or wiring issue.

Running really rich

Reply #32 – February 19, 2006, 09:35:26 PM

So far, from what I can tell, I'm always getting vacuum at TAB (well last time I checked, the prior time I think the vacuum turned off) and TAD is getting vacuum on startup, but it drops off after the car warms up. I don't see how TAD would be doing the exact opposite of what you're saying, at the exact same time, unless you have it backwards. Not saying you're wrong, but are you sure it isn't the other way around for the diverter?

Drivers side oxygen sensor is seized and I still don't know how to get to the passenger side one without removing everything in that part of the bay (smog, a/c, etc)

Running really rich

Reply #33 – February 19, 2006, 09:41:53 PM

Yup, I re-read again...TAD valve gets vacuum on startup, and drops off once the vehicle goes closed-loop.

Running really rich

Reply #34 – February 20, 2006, 12:14:25 AM

Quote from: JeremyB

Yup, I re-read again...TAD valve gets vacuum on startup, and drops off once the vehicle goes closed-loop.

Alright, then that part is functioning properly with the new diverter valve. Old one only redirected less than half of the total air. I read that the EGR valve should be getting 5" of vacuum when active, but I never see more than 3-4. The solenoid should either work or not work, shouldn't it? Trying to decide whether I open the packaging and use the new solenoid or return it for a refund (since its electrical, the dealership won't accept returns if opened).

On a side note, after putting the car back together after trying to get the o2 sensor out, I forgot to plug in the cylinder 8 plug. Couldn't figure out what it was for awhile (just emptied some air intake cleaner into the thing). Pulled over on the side of the road. Its so easy to overlook something like that...everything still looked in place. Wish I had had a flashlight with me (which was stolen when my car was broken into)...hot exhaust and a poor engine bay light location make for a fun time.