Another problem sr20det swap - Drifting forum

ro200sx · 21-06-2008, 10:18

Hi, i have another problem, my friend tuned my power fc on my sr20det, everything was ok, car ran excelent, but in 10 min something happened, car is owerfueling, when i pres the gas pedal rpm goes down not up, but when i hit the gas pedal a 10 times fast, then rpm is going up. Spark plugs ar very wet. and the question is wtf? why is it doing like that?

daveb6285 · 21-06-2008, 10:33

throttle position sensor, maybe?

that can do funny things like that when it goes wrong! I'd check that and if you short the pins on the diagnostic pin with a paper clip, you can read all your fault codes through the light on the dash, then that will tell you more about what it maybe doing!

ro200sx · 21-06-2008, 13:09

Quote:

Originally Posted by daveb6285

throttle position sensor, maybe?

that can do funny things like that when it goes wrong! I'd check that and if you short the pins on the diagnostic pin with a paper clip, you can read all your fault codes through the light on the dash, then that will tell you more about what it maybe doing!

tps is ok, its overfueling like hell, wierd that everything was ok on the dyno, but on the road i think somethin has shaken off... tried to reduce fuel pressure - the same... anyone has other ideas what to check?

kam · 21-06-2008, 13:22

Boost/vaccum leak?

Check all your pipework.

daveb6285 · 21-06-2008, 15:16

you could check maf sensor and air intake + ic pipework for leaks or if it has popped off on boost as if its sucking loads or air in it will run rich and will try to choke its self! (just remembered the same thing sort of happend to me and it to do with the air intake and ic)

ro200sx · 21-06-2008, 17:45

Quote:

Originally Posted by daveb6285

you could check maf sensor and air intake + ic pipework for leaks or if it has popped off on boost as if its sucking loads or air in it will run rich and will try to choke its self! (just remembered the same thing sort of happend to me and it to do with the air intake and ic)

checked maf, piping, it is very vierd, becouse car ran excelent, by the way home my ground vire fell off engine, and maybe my map from power fc is gone? but on hand controller everything looks how it was...

21-06-2008, 10:18	#1 (permalink)
ro200sx gripper Join Date: May 2008 Posts: 9	Another problem sr20det swap Hi, i have another problem, my friend tuned my power fc on my sr20det, everything was ok, car ran excelent, but in 10 min something happened, car is owerfueling, when i pres the gas pedal rpm goes down not up, but when i hit the gas pedal a 10 times fast, then rpm is going up. Spark plugs ar very wet. and the question is wtf? why is it doing like that?

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21-06-2008, 10:33	#2 (permalink)
daveb6285 tail slider Join Date: Jan 2008 Location: somewhere between the apex and the ditch Posts: 111	throttle position sensor, maybe? that can do funny things like that when it goes wrong! I'd check that and if you short the pins on the diagnostic pin with a paper clip, you can read all your fault codes through the light on the dash, then that will tell you more about what it maybe doing!

21-06-2008, 13:22	#4 (permalink)
kam dorifto kingu! Join Date: Apr 2006 Location: a big lake Posts: 763	Boost/vaccum leak? Check all your pipework.

21-06-2008, 15:16	#5 (permalink)
daveb6285 tail slider Join Date: Jan 2008 Location: somewhere between the apex and the ditch Posts: 111	you could check maf sensor and air intake + ic pipework for leaks or if it has popped off on boost as if its sucking loads or air in it will run rich and will try to choke its self! (just remembered the same thing sort of happend to me and it to do with the air intake and ic)