Login Register

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
ISC Valve - what voltage?
#7
unplugging the TPS is wrong, that forces it to 2 times failsafe. why unplug sensors.? all that does is confound matters and tests..
no the TPS wires directly to the ECU.
what are all DTC codes, and do not unplug sensors, that causes the ecu to store DTC errors, of that action and then goes to failsafe.
a prime goal is to avoid failsafe, not cause it.

my tps page shows the fsm pages and how to do the calibration. on all years.
16v, pre 96's TPS.
bottom is pin 1, top is pin 4.
so pin 1 is ground, so 0v is perfect.
the pin 2, is (idle switch) is 5v this is wrong , someone removed the TPS and put it back , and never calibrated it. must be 0v.! at idle. or just key on.
the pin 3, is 0.5v, TP pin, must be 0 to 1v is normal keyon. or idling. (about) but never near 5v)
the pin 4 is , 5.0v that is power supply pin called 5vdc from ECu that provides power here and is 100% normal.

so there is why IDLE fails because some one fiddled the TPS willy nilly. or worse screwed on the never touch TB stop screw. (the throttle valve is 100% closed and this screw is never to be touched, there)
http://www.fixkick.com/sensors/tests/TPS...html#MYWAY


are you still getting 34s,??? please report what you get, for DTCs all of them. after the DOME reset, all things connected.

have you examined the ECU pin that is B8
gray-black this is he MAP pin. it must not be a corroded pin on ECU or cut wires here.
examine both pins, (at ECU and MAF) for damage, and key on and back probe this eCU pin and that voltage must match what is at the MAF, same color, if not the wire is cut.
this is a simple test. its just a wire. (maf output)
http://www.fixkick.com/ECU/92-95MPI-eng-...e-huge.png
here is the FSM page, showing the same pin, B8
see it?
http://www.fixkick.com/specs/95ecu2w.jpg
http://www.fixkick.com
Reply


Messages In This Thread
ISC Valve - what voltage? - by Nordic92 - 10-13-2014, 12:56 PM
RE: ISC Valve - what voltage? - by mpo - 10-13-2014, 08:20 PM
RE: ISC Valve - what voltage? - by fixkick - 10-13-2014, 09:13 PM
RE: ISC Valve - what voltage? - by Nordic92 - 10-14-2014, 02:26 AM
RE: ISC Valve - what voltage? - by fixkick - 10-14-2014, 02:45 AM
RE: ISC Valve - what voltage? - by Nordic92 - 10-14-2014, 08:50 AM
RE: ISC Valve - what voltage? - by fixkick - 10-14-2014, 12:55 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)