I figured I would post this in a couple of forums and see what I can find out from you guys. Basically I have just completed a single turbo conversion, fuel system work, and installed a set of K2 block-off plates. So I have removed the air pump and everything else except the ISC.

Now the car starts up just fine, idles decent.. a little bit high for my taste but smooth and I figured I can work that out once I solve the stalling issue. Now when I pull out and drive around it runs great, no issues at all.. the problem is when I come to a stop. Half the time when I roll in for a stop, push in the clutch .. uggh.. it just dies. Once in a while it will catch itself but not often, it just keeps dying on me constantly.

I had this problem before on an old Supra of mine and it turned out to be a bad TPS sensor, but I have tested mine twice now and it is within spec. I can't seem to find the problem, the only thing I can think of is that the motor is not happy without the extra air being pumped in by the air pump at low rpm/idle. Any ideas? I am sure someone has experienced this. BTW, I am running the PFC and I already replaced the LIM and UIM gaskets. Thanks for any help!

Matt
93 SSM

 

Clutch switch.

Observe the PFC switch test page while you press the clutch. ECU changes idle based on it.

--Ashraf

 

Ashraf:

I think you are right, I went out and turned my key to 'on' and went to the sensor check screen on the PFC. When I push the clutch pedal up and down the sensor 'dot' does not change, which makes me think the switch is shot and is not grounding when the clutch is pushed in. I bought a new switch this morning so hopefully this fixes the problem. Thanks.

Matt