Hey guys, recently I corrected my timing and my Camshaft codes dissapeared but now I have a hugeeeee problem. The car hardstarts and will not start once it is warm, I have codes p0102, p0113, p0223, p0123, p2135, all TPS related. Weird thing is that if I take out my intake and "choke" the TB by putting my hand over it, letting the smallest bit of air in and the car will start RIGHT UP. Another thing is that If I get the car running and I go WOT the car will lack power and create a loud sucking noise, similar to a GASP. I need help guy's, this is the last step to getting this car running perfectly. Do i need a new throttle body or throttle body sensor?

 

Help me bump

 

Bumppp

 

Bump!!!

 

I would start with a new throttle body as it sounds like the TPS is completely shot. Have you done the ECU and throttle body resets?

 

Yeah I did the ECU and relearns but the problem still persists just without the codes...also once the car is at normal temp, it WILL NOT start.

 

You may also look at your mass air flow sensor. Check the connection, and try swapping it out to verify if that is it. The MAF will cause a non start when the G is in a closed loop (warmed up). I just replaced mine as a troubleshooting measure, but my old one is perfectly fine if you'd like an OEM MAF to test with/replace your old one. $15 shipped. Check the FSM on how to test the MAF (ec.pdf).

 

Okay ill deff let you know on that! Do you know how i can check if the Throttle body position sensor is bad? (Where on the fsm)

Edit: Actually, i'll take that MAF... it should work with a Nismo CAI right? Send me a paypal invoice.. cafiorilo@yahoo.com, pm me your email so I can verify it is your invoice thanks!

 

For the TPS diagnostic checkout EC-564 thru EC-568. The MAF is the OEM sensor from Infiniti. It should work with all intakes (except for heavily modified setups).

 

I would venture to guess its either your MAF or Throttle Body as well. You can swap w/ someone you know if they have the same car to help diagnose.

 

Yeah that is what im thinking now, either MAF or TPS, i bought brazen's MAF (i do have a friend with a g35 but he will get pissed scared to try it -.-) so if it doesnt work ill just sell it and get a new TB and hopefully it does it. The car sputters at a certain RPM range like its gasping for air when i kick WOT (2000 -2500) until it gets over that and heads into the higher rpm range

 

ChrisKG35 - how are things looking?

 

Sounds like the MAF

 

Put the MAF today you sold to me Brazen and did all resets. No luck

 

Thats what I thought, but if I took off the filter and left my intake pipe and covered the hole with my hand and asked someone to start it, it would start right up. I honestly think its the TB