Time for some help

[DanDrath]

So i took the New z to school and back today. The battery was dead soi jumped it and of course it died again at class but luckily i was in automotive class. We did an ecu test and code 35 i think it was came up for the exhaust gas temp sensor or circuit. We did a test on the engine an all the injectors were good but when u revved it the 1 banks numbers would shoot up for the amount of fuel going into the engine and the 2 bank was fine it only went up a little. Could this be because it needs a tune or maybe one side has bigger injectors please help=[ i want her running nice.

Oh also it does have a tt ecu && it starts to get hot with the heat off but heat on it doesnt over heat at all but when i popped the hood the engine wasnt really hot the radiator was pretty hot though. Gotta check the antifreeze level. Alright well please hope u guys help... thanks alot

[leerandallstewart]

Ok - I'll try to make sense of this ramble.

ECU Code 35 is the O2 Sensor circuit.It may be a bad O2 sensor and here is where it ties in to your fuel injector issues:

If both sides are running fine at idle, and then when you give it power, one sides richens up a lot, and the other side only richens up a little bit, it is probably because the O2 sensor is telling it to do so. 1 sensor is reading way too much or way too little fuel...when you add power, the ecu is compensating by wither leaning out or richening up the side that is being affected. Do the O2 sensor diagnostic test on the ECU.

Let me get this next part straight: you have a NA car with a TT ECU? I THINK that will work if there are no tranmission conflicts (auto trans ECUs can work with manual transmissions but not the other way around). I THINK it is the same for TT vs. NA - TT ECU will work on NA but not the other way around.

That said, do the research to see if that is true or not. That may be the problem.

Heating issues: If your car runs at it;s normal operating temperature when the heater is on, but it overheats when the heater is not on, you definitely should start searching for the cause. It runs cooler with the heater on because you allow the coolant more room and time to cool nbefore being heated by the engine again. Check your coolant level. If it is fine, I'd check the water pump and thermostat. Also, the radiators are pretty easy to remove on these cars, and replacements are cheap. If all else fails, replace the radiator. You can buy them on eBay all day long for $30 plus shipping.

[DanDrath]

thanks man for the help, Its a twin turbo with a twin turbo ecu. I have no money to buy a new o2 sensor so do u know if an n.a o2 sensor will work or will it give completely wrong readings? I have a new o2 on my old n.a i could use. But i don't know it probably wont work =[

With the overheating i am not sure why it would do that. Could it be a clogged radiator and maybe a coolant flush will help?

[Zwicked]

They are the same for both engines

[tmeyer29]

check the thermostat and make sure its not stuck shut,

[es.biggs]

Sometimes when they are going bad, thermostats will switch between stuck open and stuck closed ("sticking")

I'd just go ahead and put a new thermostat in man, a lot of times with cooling problems, that's all it is

[DanDrath]

cool thanks guys and im so glad they are the same =] haha loooks like my weeken project will be to replace the o2 sensor and test my injectors thermostat and egr. Maybe a can or 2 or seafoam will help out too