runnin lean????

[martinr69]

You didn't clear the code ? because I was told since I washed it and had the under body sprayed that may have got the sensors wet plus they was the factory o2 sensors as well.

 

[big-j]

ya i clear the code and i wash my car by hand im scared if i run it thru tha car wash my stripes will peel off and my car dosnt see rain.but im preatty danm sure it was the same code

 

[big-j]

well i decided to take my oil seperator off and hook tha stock hose thing up and drove it around shut it off went into wallmart for bout 20 30 min and went home and my cel never came on so im guessin it was the oil seperator guess im have to buy a good one.i still dont understand how that could throw the cel cause dont sum people have just a filter on the valve cover??

 

[AlloyGT]

When they use a breather on the valve cover, they block off where the hose plugs into the intake.

 

[JeremyH]

+1 I have dual breather with vac plugs on the other side. You most likely had a vac leak from the seperator what did you use? Some of those seperators from home depot have vented caps.

 

[big-j]

i orderd them off ebay but there preatty much the same im gonna drive my car to work today and see if it comes on.

 

[martinr69]

hey it may not be the O2 sensors. I replaced mine and still got the lean code. The mechanic kept trying to sell me a dyno tune for $400 to fix the issue. But after doing some looking around and more study on this it could be or is a fuel injector.
Here is what I found to point the finger to this issue:


How Fuel Injectors Work
A fuel injector delivers gasoline to the combustion chamber by using an electrical solenoid valve. When the car is started, an electrical current is sent to the injector coil. This current causes the coil to form a magnet. The magnet pulls a device known as a pintle from the front of the valve, allowing gasoline to flow through.
When the current is shut off, the magnetic field ceases to exist and the pintle goes back into its resting place and blocks the flow of fuel.
Causes
Fuel restriction, regardless of the underlying cause, is the most common reason for reduced performance in a fuel injected system.According to AA1Car.com, an 8 to 10 percent restriction in fuel in just one of a car's injectors can cause a misfire.
A misfire causes unburned oxygen to force a lean reading in the oxygen sensor.This reading will cause the other injectors to compensate by staying open too long, which will cause too rich of a fuel mixture in the other cylinders. This can be damaging to the engine in some cases.

 

[big-j]

ok the cel came on today and i wrote the codes down it had 2 this time po171 and po174 anybody know what them codes are?could both my o2's be bad since the po171 is a 02 sensor and tha otherday when it came on i dont remember the code but it said o2 sensor.the po171 and po174 just said system to lean.wish i would of wrote the code down when it said 02 sensor

 

[mynameismike65]

why not return your car to the stock tune after you clear all of your codes and see what happens?

 

[big-j]

i though bout that but never tried it thats a good idea ill try that should i put my stock intake back on to?i should be gettin a bbr tune hopefully monday i orderd it tuesday i was goin to see if that changed anything but ill try the stock tune

 

[martinr69]

i though bout that but never tried it thats a good idea ill try that should i put my stock intake back on to?i should be gettin a bbr tune hopefully monday i orderd it tuesday i was goin to see if that changed anything but ill try the stock tune

I ordered a tune from BBR-John and installed it yesterday. It's made a big different in the stang. Make sure you tell him your a S197 member

 

[big-j]

he wasnt in when i called so i just orderd over the net b ut if i dont get it by monday im callikn him cause o orderd it tuesday.i think i found my prob with my car to that hose thats goes on the passenger side valve cover to my jlt cai it slides on and off the vavle cover rly easy so i put i lil hose clamp on it

 

[mynameismike65]

i though bout that but never tried it thats a good idea ill try that should i put my stock intake back on to?i should be gettin a bbr tune hopefully monday i orderd it tuesday i was goin to see if that changed anything but ill try the stock tune

Yes put the stock intake back on with the stock tune. Do that until you get your BBR tune

 

[big-j]

i cnt go to stock tune i forgot i got cmdp's i got a fuel filter today and am gonna replace it today so maby that will help idk

 

[big-j]

well got my bbr tune and replaced my fuel filter and still gettin the same shit think im have to change my o2 sensors

 

[martinr69]

well got my bbr tune and replaced my fuel filter and still gettin the same shit think im have to change my o2 sensors

Well same here with that dam code. I did the O2 sensor, BBR tune twice and still getting that code. Got the fuel filter so that's my next step on this deal. Hope this will clear the code after installing the filter

 

[big-j]

do you think i dirty maf sensor could do it???

 

[martinr69]

do you think i dirty maf sensor could do it???

I would have to say no because I have already cleaned mine really good. And as soon as I drove the car the second time to code poped up. I seen on team shelby forum that others got the same code. Some said that once they did the fuel filter and O2 sensors the code went away. So hope this will work for the both of us. If you pick up the O2 sensors get ready to pay $120 of eaxh sensor.

 

[big-j]

danm i jut cleaned it no code yet but i only drove it once so far and i went to autozone to get price on o2's and one is 40 and the other is 60 i though from left to right there the same and front to back they diff???did you have to take your exhaust manifold off the replace em or can ya get to em with them on????i just cnt beleave there goin out at 40,000 miles

 

[martinr69]

danm i jut cleaned it no code yet but i only drove it once so far and i went to autozone to get price on o2's and one is 40 and the other is 60 i though from left to right there the same and front to back they diff???did you have to take your exhaust manifold off the replace em or can ya get to em with them on????i just cnt beleave there goin out at 40,000 miles

I took it in to get the sensors done since they was not easy to get to. Give it your second time driving it for the code to come back. I went to the dealer fo my o2's because they was OEM and I was getting the correct sensors.