[DML] Car almost dies when idling in drive

[Enid/Jeremiah <hispanicangeleyes@xxxxxxxxx>]

Hello everyone,
 
  As my list of completed repairs becomes ever so longer, I have stumbled upon a new problem.  This weekend, another DeLorean owner and I did a couple repairs.  The repairs included adjusting that hole in the air venturi to keep the car from continually running rich (used a specific tool to adjust inside the hole from rich to a bit more lean - this also fixed the car's "winding idle" problem where it would idle up and down continuously from 900-2000rpm over and over when in park), replaced all 18 fuses in the electrical system, replaced the front rotors, replaced one of the rubber hoses on the left-side cooling pipe leading to the radiator (directly behind the driver side front wheel; it was VERY plump and ready to burst), changed the bulb on my front left turn signal, and adjusted the fastening rods on my passenger side door so now my door shuts perfectly.  Alas, the car got a little grumpy and decided to give me two new problems.  First, the car overheats - tested the otterstat -
 otterstat failed, that problem solved.  The other problem has gone so far unsolved - here it is:
 
  (AUTO tranny)  Start the car, go for a drive.  Come to a stop sign with the car in drive gear.  The car will idle fine for about 7-8 seconds and then the cycling motion of the idling will slow down just a bit.  The dash lights will all dim just a bit (NOT completely go out..just dim) as the cycling slows down, and then the cycling will resume its regular idle.  The dash lights will all brighten again as the car retains its regular idle.  The process will repeat itself over and over.  Once the car in Drive actually died on me while at a stop sign..and it will occasionally almost completely die...IF I shift the car into Neutral, the car will idle perfectly - no problems whatsoever.  I have let the car idle for roughly 10 straight minutes in neutral and there isn't one problem..shift it back to drive and the problem will reoccur.
 
I hope I described the problem clearly; I know it's hard to understand perfectly without actually being here to see and hear it.  If anyone has any ideas, please let me know.  Oh, the car also will start in reverse and drive - that sounds like a failure of the microswitch/neutral-safety switch in the auto-tranny computer governor.
 
Someday, I will post a list of my repairs up to that current day; I think alot of you would be well-pleased with how far #003299 has come.  I'm telling you all right now; this one was headed for a junkyard.  If any of you are worried about "our population" dwindling, fear not - we are reviving one as we speak.  In fact, this car is revived; it's just being fickle and fussy right now...I guess with that given, I own a DeLorean ;).
 


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