QuestionQUESTION: Sorry, I had to ask a new question. I checked the wires to the tps and
with the key off, no volts; key on, 5 volts. Out of desperation I bought a
Haynes manual. It said if you have 5 volts with the key on, the next check
is the PCM. The only way I've found to have the PCM checked is to take
the car to a shop. Can it be tested out, or should I just order a rebuilt
one?
ANSWER: Please clarify the specific wires that you had your voltmeter attached to when you observed voltages, and differentiate as to when you did and didn't check it with tps connected to the plug:
When it was connected what was the reading with the throttle open and with the throttle closed. Also, did you observe the same voltages between pin 35 (the signal wire, orange/dark blue) and pin 43 (the sensor ground, black/light blue) and if not how did it vary as you moved from closed to fully open throttle? The problem may be in the connecting wires from the tps to the pcm, not the tps itself. I don't think you have exhausted the tps code issue yet, so I wouldn't start down the line of replacing the pcm for a solution.
---------- FOLLOW-UP ----------
QUESTION: Ok, I've got 5 volts with the voltmeter positive lead backprobed into the tps
connecter violet/white wire and tps plugged in. Negative is connected to
the negative battery.
With the signal wire orange/blue, the signal varies from .5 volts (closed
throttle) to 3.73 volts (wide open throttle)
ANSWER: Now how about the same measurement between pins 35 and 43 at the pcm? and does it vary smoothly between closed and open?
---------- FOLLOW-UP ----------
QUESTION: At closed throttle I have 7.45 volts and it does not vary with the throttle
AnswerHi Clay,
If that is measured between pins 35 and 43 at the pcm then that explains the tps fault code. It cannot be anything more than 3.73V and you got 7.45V! There is probably a break in the orange/dark blue wire and then a short circuit of that orange/dark blue wire to an 8v power source wire somewhere along the harness from the tps to pcm. In fact there IS an 8v wire (orange) on pin 44 of the pcm plug and that wire may somehow have gotten shorted to the orange/dark blue wire. But I'll let you get into the details.
There should be no connection of the orange/dark blue wire to any other of the wires on the pcm plugs when you have the tps unplugged. So try checking for resistance, which should everywhere be infinite between 35 and any other wire, with the pcm plugs removed from their sockets. You may find it is shorted to the orange on 44. That 8 volt wire is needed by both the crank sensor and the cam sensor for them to function so it may also be the case that if it is shorted to the orange/dark blue that may cause those two sensors to not function properly which could also be involved in the 'no start'.
I think you now have the clue you need to solve the problem. Please report back when it is solved.
If you would be so kind as to 'rate' my answer and consider a 'yes' where you see the question about nomination for me to be 'volunteer of the month' I would be most appreciative.
Roland
