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help. again.



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The '87 16V is letting me down.

It's still dying momentarily, only now the "momentarily" is long enough =
to force me to the side of the road for 30 seconds.  It still fires =
right back up after and runs as if nothing happened (runs for 10 seconds =
or 5 days.....).

Symptoms:   ignition goes dead for from 1/10 second to 30 seconds.  Tach =
instantly drops to zero, even though the motor is still turning over =
3000 rpm as it coasts to a stop.  All other electrical items seem to be =
unaffected (lights, radio, voltmeter and other gauges, etc.all work the =
whole time)   It's random; every three or four days or so it will have a =
fit of this frustrating behavior.  Fuel flow seems normal as it usually =
backfires slightly when the ignition kicks back on.....

I've re-cleaned all the grounds in the engine compartment. (even though =
it acted completely different when the grounds were bad)
Installed new fuel pump relay, just in case.
Installed new Hall affect sender.
Installed new coil.
Installed new ignition control unit/module.
Checked and cleaned all connections in engine compartment.
Diagnosed knock sensor unit. (no reported faults)
Battery and alternator are good (consistent 13 - 14 volts)
New ignition switch. (wiggling the key does not cause the dying)
Fuel tank level has no discernable affect, (full or near empty).
Can happen immediately after start-up, cold or warm, or after 20 minutes =
of driving.

I'm getting desperate.  (Desperate enough to drive my Chevy van to work =
the last few days....)

Someone on this list has an idea that I haven't been able to think =
of.....and one of those ideas will be IT!

Larry
sandiego16v

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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>The '87 16V is letting me =
down.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>It's still dying momentarily, only now =
the=20
"momentarily" is long enough to force me to the side of the road for 30=20
seconds.&nbsp; It still fires right back up after and runs as if nothing =

happened (runs for 10 seconds or 5 days.....).</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Symptoms:&nbsp;&nbsp; ignition goes =
dead for from=20
1/10 second to 30 seconds.&nbsp; Tach instantly drops to zero, even =
though the=20
motor is still turning over 3000 rpm as it coasts to a stop.&nbsp; All =
other=20
electrical items seem to be unaffected (lights, radio, voltmeter and =
other=20
gauges, etc.all work the whole time)&nbsp;&nbsp; It's random; every =
three or=20
four days or so it will have a fit of this frustrating behavior.&nbsp; =
Fuel flow=20
seems normal as it usually backfires slightly when the ignition kicks =
back=20
on.....</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I've re-cleaned all the grounds in the =
engine=20
compartment. (even though it acted completely different when the grounds =
were=20
bad)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Installed new fuel pump relay, just in=20
case.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Installed new Hall affect =
sender.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Installed new coil.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Installed new ignition control=20
unit/module.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Checked and cleaned all connections in =
engine=20
compartment.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Diagnosed knock sensor unit. (no =
reported=20
faults)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Battery and alternator are good =
(consistent 13 - 14=20
volts)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>New ignition switch. (wiggling the key =
does not=20
cause the dying)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Fuel tank level has no discernable =
affect, (full or=20
near empty).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Can happen immediately after start-up, =
cold or=20
warm, or after 20 minutes of driving.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I'm getting desperate.&nbsp; (Desperate =
enough to=20
drive my Chevy van to work the last few days....)</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Someone on this list has an idea that I =
haven't=20
been able to think of.....and one of those ideas will be =
IT!</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Larry</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>sandiego16v</FONT></DIV></BODY></HTML>

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