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Loose spark after it warms up?

Tiny
BUSHMANGREG
  • MEMBER
  • 1989 NISSAN PATHFINDER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
1989 Nissan Pathfinder. After starting it runs ok, then as it gradually warms up it runs rough, sometimes starts to stall while driving, then after about 19-20 minutes it stalls and there is no spark. After sitting for about 30 minutes it will start back up. I have replaced the distributor cap, plug wires, coil and ignition module. Any ideas?
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Wednesday, May 6th, 2015 AT 5:59 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Did you replace the crank sensor which I believe it in the distributor?
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Wednesday, May 6th, 2015 AT 7:13 PM
Tiny
BUSHMANGREG
  • MEMBER
  • 3 POSTS
No, I haven't. Is that difficult to replace?
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Wednesday, May 6th, 2015 AT 7:51 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
It shouldn't be too bad.
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Thursday, May 7th, 2015 AT 5:26 AM
Tiny
BUSHMANGREG
  • MEMBER
  • 3 POSTS
Do I have to completely remove the distributor in order to replace it, or can I replace it with the distributor still in the engine? Thank for the information!
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Thursday, May 7th, 2015 AT 7:22 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
1989 was awhile ago. I don't think it needs removed. My manual doesn't say. Take a look at the attached pic. It walks you through a test procedure. That could save you some time and money.
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Thursday, May 7th, 2015 AT 7:02 PM

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