1990 Oldsmobile 98 1990 Olds 98 Regency. No power to any f

Tiny
KILLERKEN
  • MEMBER
  • 1990 OLDSMOBILE 98
Electrical problem
1990 Oldsmobile 98 6 cyl Front Wheel Drive Automatic

Lost all power to all fuel injectors. Is there a relay somewhere or a fuse?
Had one connector that when we pulled it off while motor was running made no difference in engine RPM, so pulled off connector on next injector and switched them. 1st injector now works and 2nd one doesn't. When put test light on 1st injector's plug- had a light. Accidentally touched a ground somewhere there was a spark and now I have no power to any of the injectors. Where do I start to look for the problem? I understand that there is a fuel injector relay, if so, where is it located? Or is there a fuse somewhere, can't find that either! Or is the problem now in the computer?
What is the metal electrical box with all the wires going to it underneath the coil pack called? ECM? Or something else?
The car developed a miss and after checking all the plugs found they were all firing. Felt like an injector was not firing-that's why I was switching and looking for a problem with the injectors.
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Sunday, April 11th, 2010 AT 10:49 AM

1 Reply

Tiny
JACK42
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Looks like fuse #7 in the relay center powers the injectors. Whever you are diagnosing an electrical problem it is agood idea to use a test light to check all fuses, even if they dont seem to apply to what you are doing. Sometimes sub-systems will keep the others from powering up. Also looks like you may have a few fusible links off the battery or starter, use the test light on those as well.
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Sunday, April 11th, 2010 AT 5:52 PM

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