Alan,
Interesting! How many flashes do you get when this happens ?
I have had similar problems. I would get 4 flashes, indicating the NC
temp. sensor. Put on a new connector and the thing would still be
intermittent. When it would happen, the car would run like crap.
Now for the last few weeks, the problem has gone away and the car runs
like new with 160K.
I have measured 4 or 5 87 STX and they all have low voltage, never
going above 13.6 volts. Someone on the list here has stated that the
wiring from the alternator is inadequate. I have yet to go directly to
the alternator to measure the voltage. It is under the car.
Paul
87 STI 5 sp
85 N9T 5 sp
alan5o5 wrote: I am experiencing some initial stalling when I first
drive off in the
morning. Initially I chocked it up as low voltage output from the
alternator and/or a weak battery from A/C and high-watt H4 bulbs.
I purchased a multimeter to experiment and found the following.
In the morning before I start I will let the ABS system pump up. With
the battery showing about 12.50 volts, the ABS pump will drop it down
bellow 12 to approx 11.40 or less. With the multimeter still on I
crank it and watch the volts drop down to about 10 volts until started.
When started it will immediately jump to about 13.40 to 13.65. When I
shift into drive and start to pull out it bumps up a little higher. It
tries to stall when I apply the brake after a few feet. As soon as I
felt a stall I glanced over at the multimeter and it was still showing
13+ volts. Strange.
Once I pull out on the road the voltage shoots up to about 14.30 to
14.55. (This is without the A/C, fan blower, radio, lights, etc being
on) At times the detonation light will start to blink. I stop and turn
off the car and then start it back up. The detonation light will go
off and remain off. The voltage will also drop to below 14, and
remains in the 13.30+ range.
One other thing worth mentioning is the electric fan will come on when
the ignition is turned on, even though the ECO button is engaged and
the A/C off. When this happened yesterday afternoon, the A/C CPU relay
buzzed for a second. (The old ECU relay burned out, this unit is a new
one) This morning it occurred again (minus the ECU relay buzz), and I
was able to turn off the electric fan off by engaging the A/C, and
then turning it off.
So could this be a grounding issue?
Is the alternator pumping out too much power?
Could the battery be bad? (Less than 9 months old)
I'm rather stumped..
-Alan
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Received on Wed Jun 14 08:01:03 2006
