still no spark

[Todd Phenneger]

LUKE,
  Listen Very Carefully.  I know the KH ECU is a pain to hook up
the Self Diag. System for, but do it.  On my KH I used the
Seatbelt light as the check engine light as it has wires
stickign out to tap into instead of being driven wholly off the
circuit board.  Then for the RPM signal I just plug in my
Multimeter on the RPM function.  IT doesn't really matter if the
RPM reads correctly or not.  As long as you get a reading.  Turn
ignition on and start the sequence and find what RPM or
frequency you MM reads.  Now the book says that the KH unit
shoudl read 7,000 RPM.   Mine MM read like 3,000 RPM or
something.  But when I hit the brake and went to the first fault
code it dropped to like 400 RPM.  Hmm, that would be like a
1,000 RPM reading on the factory KH gauge.  So I had a fault,
lookign at the manual it had to be one of two things.  TDC or
RPM sender.  So I tested both.  They were fine.  So I checked
continuity from the connector to the ECU.  Hmm, intermittent.
Turns out the ground wire at the connector was deteriorated
where it connects to the coax shielding.  So I rewired it and
now its great.
   Anyhow, I would Highly recommend getting that self check
system workign.  It took me an hour or two to get it workign but
saved me many more in troubleshooting.
Good Luck
  TOdd
  FS: 84' 4ktq.
--- luke <maytagasm at sympatico.ca> wrote:
> This is a multi-part message in MIME format.
> --
> [ Picked text/plain from multipart/alternative ]
> ok guys... help me troubleshoot my ignition...
> i checked my 3 sensors, tdc, knock and rpm and all 3 are
> good...
> checked hall sender to ecu and its good... checked the wires..
> good...
> checked the coil... good...
> coils ground is grounded...
>
> just a thought... is there a chance the timing pin is
> different from kh
> to mc?
> could this be my problem?
>
> one thing that makes me suspicious that something is hooked up
> wrong
> is as soon as the key goes to acc the oil pressure jumps up
> before the engine
> is started... what sensor sends oil pressure?
> how do i check it?
>
> what else should i check?
>
> man im so frustrated right now...
>
> timing is correct...
> at tdc the rotor points at 1...
> what connectors affect ignition?
>
> everything was working before i put the engine in so im
> doubtful of a failure
> of any sort...
> so id like to assume everything works perfect...
>
> thanks...
> luke
> 90tq
> --
>


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