1800 rpm cut off
 

What causes the car to cut out at 1800 rpms? When idling i can rev it past 1800, but while driving, it will not go past 1800. Im assuming its some kind of fuel cut off. But my question is what are all of the different elements that could cause this? Also the MIL is not on.

Boost leak. Dose the engine rev or NO?
Check your battery!
Check your Spark Plugs

Battery?!?
It does rev, it actually idles very smooth, and will run just amazing until 1800 rpms.
And the spark plugs are brand new....along with everything else.
Could timing cause this? because i havent times it since i put the head back on.

OHH hell yeah if oyu havnt timed it this is probably your problem. The battery connections can cause all kinds off issues as well.I just encountered this problem so i am fresh off shitty connection problems causeing detonation and power issues

well, turns out its my tps.... finally got it to give me a code...which was 41. so now i have to figure out how the hell to deal with this nissan tps.

did you hook up the coils and wires the correct way?

Yes the coils and wires are hooked up correctly. Ok, so I wired the stock tps back up, and modified my 80mm TB to use the stock one. Now it does go past 1800 rpms, BUT it still cuts out, but now its random. At WOT it goes just fine, but under normal driving it will randomly cut out. Do you guys think maybe my tps isnt adjusted right? Or maybe if my timing was off it could cause this? Or are both of those not things that would cause a random shut off?

could be the tps

I would start with the timing.. Take the 7mgte cover off, and check it with the timing gun... the numbers, letters should be right stationary when you check it... hope i could help...

carlos

He already said it was his TPS which is what I was going to say. Readjust it and it should be good to go. This was the first thing I ever had a problem with on my first Supra, so I know first hand what he's talking about.