Tps question

[blacksupra]

I'd like to know if I disconect the tps what should i expect?
Rpms moving up and down. I got the tps adjusted but after i took the car to a shop the idle started acting funny.The idle moves up and down and it looks like it's going to shut off. Sometimes stays at 500rpms. They only installed the ic lower pipes cuz I was too busy and I don't know why the idle is acting like this.

 

[Y.O. supra89T]

if that was the only thing they touched. you could have a leak in the i/c pipes. maybe they didn't tighten the pipes down good enough

 

[MDCmotorsports]

Boost leak or bad AFM. If I read your post correctly, you HAVE A HUGE BOOSTLEAK with only the lower IC piping on.

 

[Halsupramk3]

which IC pipe are you talking about the one from turbo to Ic or the return up to the throttle body?

there is a ic joint in the fender they may have forgotten to tighten or even the one at the IC.

Even check the little vacuum hoses the may have broken one off.

It does sound just like a vacuum leak

 

[Idealsupra]

any codes? if youve got codes it would tell you tps or afm etc... no codes then go check the ic piping

 

[blacksupra]

I bought a custom make ic pipes so it's not rubber. I found out they untight my K&N filter and the car was acting funny but now it only shows 7.5 psi with my mods 3' catback , 3' Dp, K&N filter with adapter, ssqv. I don't have the honeycombed.

 

[blacksupra]

If i unplugged the tps what different should I see. I disconected the isc and when i started the car the idle was way too high so the isc looks fine. I can hear the 3 clicking of the isc and I checked the resistance of the ISC and it's fine.

 

[shaeff]

if you unplug the TPS the idle will be steady around 1k rpm.

-shaeff