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No spark or fuel

Tiny
TCLYNCH
  • MEMBER
  • 1997 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
1997 Jimmy

no spark or fuel
I checked all fuses wires and distibutor position. I also changed the ingniton module(next to coil) and the other ignition component in the distributor assy.

?
Monday, December 6th, 2010 AT 3:20 AM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the ECM ignition fuse 20amp and the ignition control module and distributor pick-up coil
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Monday, December 6th, 2010 AT 4:33 AM
Tiny
TCLYNCH
  • MEMBER
  • 5 POSTS
I have checked those items. The distributor has power to it but the coil does not. There is fuel pressure but the injectors are not working. I have tested the crank sensor, ignition module, cap, rotor, wires plugs and fuses many times each.

This is a S&T series and I am starting to question the VCM.

But, the truck ran when I brought it in the garage. I changed the lower intake gasket. The repair went smooth and I followed standard procedure for such a task.
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Tuesday, December 7th, 2010 AT 6:31 PM
Tiny
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When you say the coil does not-do you meant 2ndary spark or battery voltage to the ignition coil -positive terminal?
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Tuesday, December 7th, 2010 AT 6:49 PM
Tiny
TCLYNCH
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Sorry, yes that is correct.
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Tuesday, December 7th, 2010 AT 7:47 PM
Tiny
TCLYNCH
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There is no battery voltage to the ignition coil.
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Tuesday, December 7th, 2010 AT 11:23 PM
Tiny
TCLYNCH
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  • 5 POSTS
As I crank the engine over the tach does not move at all, I don't know if that helps at all.
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Tuesday, December 7th, 2010 AT 11:57 PM
Tiny
RASMATAZ
  • MECHANIC
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Check and test the ECM Ign fuse 20amp-
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Wednesday, December 8th, 2010 AT 12:07 AM

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