97-SC300

iTrader: (17)

HI guys, i started my JDM aristo for the first time a few weeks ago and it ran perfect at idle, but when i try to give it gas it wont rev past 1500-2000 rpm, seems like its in a limp mode. i checked for codes and got codes 31,41. Dr. Tweak did my harness. not sure what to do at this point. please help.

stockhatch

iTrader: (12)

Did you adjust the TPS like we talked about a week ago?

xspsi6

iTrader: (31)

call tweak and seee what he says.

97-SC300

iTrader: (17)

adjusting the tps really has no effect on anything at all.

tested the resistor pack, it's perfect.

stockhatch

iTrader: (12)

Adjusting the tps did not change the readout that the safc gives you? Have you removed the safc yet? You are getting two codes related to sensors that are wired through a piggyback(TPS, MAP). Removing said piggyback should be the next step.

stockhatch

iTrader: (12)

Does resistance between pins 1 and 3 on the tps increase in a liner fashion as the throttle opens?

97-SC300

iTrader: (17)

adjusting the tps did have an effect on the safc readout, went up to 100% reading and the lowest of about 12.8. no matter which way you adjust it, it would not go below 12.8

I removed the safc last night which was wired into my MVP patch harness. So right now the patch ahrness iss off the car and everything that was wired into the patch (safc, greddy speed cut).

I thought it might be the map sensor, so I unplugged it and started the car with it being unplugged. The engine barely ran at all, so I really doubt it's that.

stockhatch

iTrader: (12)

Oh good, you have a patch harness. That makes it easier to troubleshoot the TPS.

Use your patch harness and try running through this testing: http://mkiv.supras.org.nz/articles/engine_2_41.htm

97-SC300

iTrader: (17)

that checked out good, any other suggestions?

93sc300cjb

try uaing higher octane an check ur timing an is it throwing a check engine code

97-SC300

iTrader: (17)

using 93 octane, timing is perfect. yes read the first post lol. 31 41

stockhatch

iTrader: (12)

Run this test:

http://mkiv.supras.org.nz/articles/engine_2_35.htm

Vwpride12

What ecu are you running

Vwpride12

when looking at your tps plug from the back what are the wires colors from left to right?

97-SC300

iTrader: (17)

stock aristo auto ecu, tps sensor wires from left to right. light blue/red, yellow, green, light orange