How do I bypass my o2 sensors?
05-17-2007, 01:46 AM
#21
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: How do I bypass my o2 sensors?
FYI....this is not a customer, but a case that will prove the point......again, this is not the optimum way to run EFI, simply an example of the logic the system has to deal with failure conditions, or the absence of some inputs; and should be "used" as a temporary crutch while the problem is fixed.
05-17-2007, 01:53 AM
#22
3rd Gear Member
Join Date: Apr 2005
Location:
Posts: 585
RE: How do I bypass my o2 sensors?
I know how limp mode works. This is what I do for a living. It's just never a good Idea. O2's are like ur computers backups. So it can see the affects of what it is doing. There are way too many variable that can affect your af ratios. I'd rather have my computer see what's going on then guessing.
05-17-2007, 04:23 PM
#23
I ♥ Acer
Join Date: Apr 2007
Location:
Posts: 155
RE: How do I bypass my o2 sensors?
ORIGINAL: rcdblink716
I know how limp mode works. This is what I do for a living. It's just never a good Idea. O2's are like ur computers backups. So it can see the affects of what it is doing. There are way too many variable that can affect your af ratios. I'd rather have my computer see what's going on then guessing.
I know how limp mode works. This is what I do for a living. It's just never a good Idea. O2's are like ur computers backups. So it can see the affects of what it is doing. There are way too many variable that can affect your af ratios. I'd rather have my computer see what's going on then guessing.
I get what you are saying, and I don't recommend running with out the O2's either. I don't think any one in this thread would RECOMMEND it.
But, if the hardware on the car is properly matched, the ecu can do surprisingly well.
The point being made is that the car can (and usually will) run, without the O2's, even if it isn't ideal.
jason
05-17-2007, 04:25 PM
#24
I ♥ Acer
Join Date: Apr 2007
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Posts: 155
RE: How do I bypass my o2 sensors?
ORIGINAL: Squirrel_Masta
Alright, alright....you talked me into it.
I spent all day today taking/cutting my old H-pipe off, cutting the studs off, and trying to drill through them. After burning up half of my drill bits and sending my wife to Lowe's to get me another that i burnned up in about 5 min., I have got three of the four studs drilled out I still need to remove my new h-pipe from my 91 (with a blown tranny)and put it on my 87.
Now i am sitting here covered in dirt and oil (yeah, i don't have a garage) just to thank you all.
Man what a great day!!!!
Alright, alright....you talked me into it.
I spent all day today taking/cutting my old H-pipe off, cutting the studs off, and trying to drill through them. After burning up half of my drill bits and sending my wife to Lowe's to get me another that i burnned up in about 5 min., I have got three of the four studs drilled out I still need to remove my new h-pipe from my 91 (with a blown tranny)and put it on my 87.
Now i am sitting here covered in dirt and oil (yeah, i don't have a garage) just to thank you all.
Man what a great day!!!!
We all feel that pain...
Why didn't you have the wife pick up a couple cases of Mountain Dew and work through the night. [&:]
No quiting until the jobs done!
I don't care to count how many times I have done that...
Keep us posted on the progress,
jason
05-17-2007, 04:59 PM
#25
2nd Gear Member
Join Date: Jun 2006
Location: Lehi, UT
Posts: 300
RE: How do I bypass my o2 sensors?
ORIGINAL: jasonvri
LOL
We all feel that pain...
Why didn't you have the wife pick up a couple cases of Mountain Dew and work through the night. [&:]
No quiting until the jobs done!
I don't care to count how many times I have done that...
Keep us posted on the progress,
jason
ORIGINAL: Squirrel_Masta
Alright, alright....you talked me into it.
I spent all day today taking/cutting my old H-pipe off, cutting the studs off, and trying to drill through them. After burning up half of my drill bits and sending my wife to Lowe's to get me another that i burnned up in about 5 min., I have got three of the four studs drilled out I still need to remove my new h-pipe from my 91 (with a blown tranny)and put it on my 87.
Now i am sitting here covered in dirt and oil (yeah, i don't have a garage) just to thank you all.
Man what a great day!!!!
Alright, alright....you talked me into it.
I spent all day today taking/cutting my old H-pipe off, cutting the studs off, and trying to drill through them. After burning up half of my drill bits and sending my wife to Lowe's to get me another that i burnned up in about 5 min., I have got three of the four studs drilled out I still need to remove my new h-pipe from my 91 (with a blown tranny)and put it on my 87.
Now i am sitting here covered in dirt and oil (yeah, i don't have a garage) just to thank you all.
Man what a great day!!!!
We all feel that pain...
Why didn't you have the wife pick up a couple cases of Mountain Dew and work through the night. [&:]
No quiting until the jobs done!
I don't care to count how many times I have done that...
Keep us posted on the progress,
jason
05-18-2007, 12:06 AM
#27
1st Gear Member
Thread Starter
Join Date: Jan 2006
Location:
Posts: 123
RE: How do I bypass my o2 sensors?
ok, I have ogot the h-pipe all hooked up nice and snug, new O2' cause after i got the old ones off relized that they were crap anyway, hahaha. My mufflers and tailpipes are swiss cheese (rust holes everywhere).
Ihave seem to have lost power though?
Could this be because my timing was set while my O2's weren't functioning properly? Or maybe just because it actually has some back pressure now?
If not then i need some help with this one, i liked my car better when it was a little faster!!!! [&o]
Ihave seem to have lost power though?
Could this be because my timing was set while my O2's weren't functioning properly? Or maybe just because it actually has some back pressure now?
If not then i need some help with this one, i liked my car better when it was a little faster!!!! [&o]
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