left bank running lean
#11
07-05-2013, 10:17 AM
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,156
I understand cost and warranty, but I advise against the BOSCH. If you have problems, will the part store be OK with you exchanging it for cash back or a different brand O2? Or under that 1 year warranty, are you stuck with BOSCH. I say it because a lot of modern 3800 owners have had issues with BOSCH 02s (yes some have no issues, but there's enough of them I steer clear). Google it.
Plus, if you can wait a couple of days, RockAuto.com, $40 for a Delphi shipped to your door.
Now, since you have a pre-2000 car, it might be easier to get away with not having O2 issues due to brand.
As for the fuel pump, I'd recommend addressing the O2 sensor FIRST. Don't change the pump yet. You may be dealing with some coincidence. Solve the CEL condition and see if that starting issues resolve. No need to change something if it's not really bad.
You could always look up what the fuel pressure should be, get a fuel pressure gauge loan-a-tool and see if you have expected proper pressure. That would answer a big part of "is the pump going bad".
Plus, if you can wait a couple of days, RockAuto.com, $40 for a Delphi shipped to your door.
Now, since you have a pre-2000 car, it might be easier to get away with not having O2 issues due to brand.
As for the fuel pump, I'd recommend addressing the O2 sensor FIRST. Don't change the pump yet. You may be dealing with some coincidence. Solve the CEL condition and see if that starting issues resolve. No need to change something if it's not really bad.
You could always look up what the fuel pressure should be, get a fuel pressure gauge loan-a-tool and see if you have expected proper pressure. That would answer a big part of "is the pump going bad".
#15
07-06-2013, 10:54 PM
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,156
Right now I don't know why you jumped the gun and changed the fuel pump. Potentially your problems could all be related to your CEL code. I would have solved that first (since the car is telling you what's wrong). Just my opinion.
As for the O2, you MUST have the O2 socket to put the new one on (it's a deep well socket with an opening to allow the wire to hang out).
To get the old one off, I typically end up cutting the wire off (as close as I can to the O2). This way I can put a regular deep well socket on it. To make it easy, get a couple long extensions on that socket and a breaker bar (enough extensions so the bar is over the engine, plenty of room to pull against it). I have yet to have this method fail me when I can do it. Once you break the old O2 loose, the rest should be easy.
As for the O2, you MUST have the O2 socket to put the new one on (it's a deep well socket with an opening to allow the wire to hang out).
To get the old one off, I typically end up cutting the wire off (as close as I can to the O2). This way I can put a regular deep well socket on it. To make it easy, get a couple long extensions on that socket and a breaker bar (enough extensions so the bar is over the engine, plenty of room to pull against it). I have yet to have this method fail me when I can do it. Once you break the old O2 loose, the rest should be easy.
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6th Gen ('00-'05): Too lean bank 1? Its back!! HELP
matt210
Engine/Transmission/Performance Adders
6
12-01-2012 09:20 AM
