No high rpm?

Isphius · 12-31-2006, 05:35 PM

If you have a clogged cat and you take the o2 sensor out it gives the exhaust an extra place to go. But since you have no cat you can rule out that idea lol. Also check the above mentioned, boost leaks, plugs, wires, air filter, etc. Make a video of the problem if you can. Does the car miss? sputter or shake? or does it just stop revving up like if you dont open the throttle all the way?

gomezmk · 01-01-2007, 10:47 PM

I checked all the plugs, coil packs, wires it's all good. It does not miss, it just stops pulling after 5,000 rpm. It does matter whether the motor is in boost or not, it does it also in neutral so that rules out alot of stuff such as ignition wise being faulty or weak. I'm suspecting either an rpm input such as a cps where data at higher speeds is getting corrupted before it inputs to the ecm or the ecm itself being faulty. It seems engine speed input is the source of the problem.

12-31-2006, 05:35 PM	#1
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	If you have a clogged cat and you take the o2 sensor out it gives the exhaust an extra place to go. But since you have no cat you can rule out that idea lol. Also check the above mentioned, boost leaks, plugs, wires, air filter, etc. Make a video of the problem if you can. Does the car miss? sputter or shake? or does it just stop revving up like if you dont open the throttle all the way? __________________ Yay the supra assistant is gone!!! WEEE!!

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01-01-2007, 10:47 PM	#2
gomezmk 3" Exhaust Join Date: Jul 2006 Location: Santa Rosa, CA Posts: 70	I checked all the plugs, coil packs, wires it's all good. It does not miss, it just stops pulling after 5,000 rpm. It does matter whether the motor is in boost or not, it does it also in neutral so that rules out alot of stuff such as ignition wise being faulty or weak. I'm suspecting either an rpm input such as a cps where data at higher speeds is getting corrupted before it inputs to the ecm or the ecm itself being faulty. It seems engine speed input is the source of the problem.