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Re: Ignition computer woes
Paul,
I've had the same problem with my Ur-q (which I unfortunately no longer own)
when retiming the engine. I also suspected the computer, however, it
turned out to be fine. It seems that the urq computer will cut voltage to
the coil if the distributor pickup is not timed correctly with the
flywheel pickups. I couldnt figure out why I had no spark, but it turned
out that the car was not exactly timed. I also had the official factory
manual but it still took a great deal of trial and error to get the car
to run. I've done it twice but I don't think I could get it right the
first time even with the manuals.
Hope this helps,
Rod
<rwiggins@rs6000.baldwinw.edu>
On Thu, 10 Aug 1995 ptimmerm@mashtun wrote:
>
> I am in the middle of trying to resurrect my 83 TQC.
> The ignition computer hasn't worked for some time.
> I have the factory manuals for the car and have done
> all of the troubleshooting, yet it doesn't work. I called
> Ned Ritchie and asked for help. One plan is to make a
> breakout box for the ECU. I have located the correct
> AMP-Germany connectors (You hear that guys, you can rewire
> any nasties in your ECU harness for few $).
>
> Mostly I am asking for a few words of wisdom or encouragement.
> There is some small chance the time belt is off by 180 degrees.
> I had a broken arm and lost a water pump. So I had the local
> shop do the belt as well. It never ran right afterwards. They
> wanted to sell me a $600 distributor, which I rebuilt later for
> $80.00 but to no avail. The computer was previously tested,
> and all of the reference signals show up with a scope. I traced
> the ICU firing circuit back through the ICU till I hit unknown
> chip pins. No reset si9gnal for the latch circuit. ie no ignition.
> The primary ignition works flawlessly. I will retest the computer
> tonight on a nieghbors car (I cold called a guy who lives 50 miles
> away who has one for sale!)
>
> Could I be mistaken about seeing the flywheel marking, it looked
> dark and slightly rusty or dirty. Could I move the distributor
> by 180 degrees and disconect the coil wire to test for ICU signal?
> Any other ideas?
>
> Paul Timmerman - Dead TQC Owner
>
> ptimmerm@mashtun.jpl.nasa.gov
>
>
>