new intake and exhaust and gettting code 25
05-14-2012, 03:48 PM
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new intake and exhaust and gettting code 25
I put a new 3inch header back a a shorter intake with a cone filter and I'm getting code 25 I replaced the whole fuel system a month ago should I richen it with the afm?
05-14-2012, 05:42 PM
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You shouldnt have to richen it up with the AFM unless you messed with it in the first place.
Look for airleaks from the AFM to the TB, Also all the vacuum ports on the passengerside intake manifold.
On the exhaust is the O2 sensor after the 2 to 1 connector so its reading all 6 cylinders, not to mention before the CAT.
Is the O2 sensor deep enough into the tubing to read the passing exhaust.
Is the O2 Denso.
How are the wires to the O2 sensor, Not burnt from welds.
Look for airleaks from the AFM to the TB, Also all the vacuum ports on the passengerside intake manifold.
On the exhaust is the O2 sensor after the 2 to 1 connector so its reading all 6 cylinders, not to mention before the CAT.
Is the O2 sensor deep enough into the tubing to read the passing exhaust.
Is the O2 Denso.
How are the wires to the O2 sensor, Not burnt from welds.
05-14-2012, 06:21 PM
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I have checked it all and the o2 sensor is the stock one bc it was off my parts truck that was new so I used it I can clear the code but if I run it for about fifteen mins it will throw the cel
05-15-2012, 06:58 PM
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So I might have figured out my problem? I for my truck warm and put my multimeter in ports e1 and ox1 and got 12mv? Is that mean a bad sensor
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05-15-2012, 07:06 PM
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Hmmm, Hows fuel pressure.
O2 gauge is the only thing I can think of that would help to figure it out.
I can only think that the AFM is damaged or bad wiring connection to it, Thats if all vacuum lines and breathers are connected to the correct locations.
OBD1 Always tries to compensate to Stioch by the readings at the O2 sensor.
How does it drive otherwise?
O2 gauge is the only thing I can think of that would help to figure it out.
I can only think that the AFM is damaged or bad wiring connection to it, Thats if all vacuum lines and breathers are connected to the correct locations.
OBD1 Always tries to compensate to Stioch by the readings at the O2 sensor.
How does it drive otherwise?
05-15-2012, 07:18 PM
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It's all new fuel system from pump to regulator and it drives good just around 3900 rpm it feels like it stays than like a nitrous kicks in it it takes off Ik these motors don't rev and I don't rev mine a lot I just wanted to clean out the webs
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