XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

1988 xjs 5.3 v12

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  #121  
Old 11-04-2017, 07:00 AM
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Time for DRINKS while we wait.

I luv a sensible owner that thinks methodically, becoming a RARE breed.
 
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  #122  
Old 11-09-2017, 08:02 AM
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UPDATE:
IT RUNS! Without hesitation now! Turns out for whatever reason, that the new (used) AB14 ignition amp did the trick! I was lucky enough to find a used guaranteed working unit for $55. Now she will rev up without hesitation and runs smooth. This was the first time I was actually able to “drive” it without problems. WOW do they have a lot of torque. It did seem to idle just a bit rough after driving it for 20 min or so, but for now I’m going to attribute that to idle adjustment. I have to thank everyone on this forum for their help and suggestions, what a great group of people with amazing knowledge. I do have a few other electrical issues to sort through (passenger seatbelt, window wipers, power antenna, and climate control not blowing air through vents) but I believe a new post for those issues would be proper since the initial problem here has been solved.

To recap for anyone else following this post:
New Alternator
New plug wires
New cap
New rotor
New (used) AB14 ignition amplifier
New injector lines and seals

these items replaced fixed my no start / erratic run situation.
 
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  #123  
Old 11-09-2017, 09:38 AM
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GREAT news. Congratulations. A victory for patient, careful, methodical work.
Greg
 
  #124  
Old 11-09-2017, 04:37 PM
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Well done.

The crappy idle is possibly spark plugs that have been "burnt" wrongly by the misbehaving electrics, so a new set will more than likely sort that one out.
 
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  #125  
Old 11-10-2017, 02:11 AM
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Originally Posted by Mav0199
I attempted to replace the unit (which tested bad) with the 115amp replacement, however, the bolt holes and shaft size are larger than the stock unit? The new alternator does not come with a pulley or cooling fins, so how do i replace the 80amp with a 115amp?
The screw hole is for a long M10.

Remove the 4 bracket screws, remove bracket, drill with 10 mm drill. Refit, installieren alternator.

Important: the bracket for the tensioner was alter so you'll want that too.
 

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