my service now light came on all of a sudden

1984 CADILLAC FLEETWOOD BROUGHAM
51,400 MILES
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KBROOKINS
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  • 4 POSTS
My 84 Cadillac fleet wood just started cutting off and not wanting to stay running its a fuel injected HT4100 whats wrong and how much to fix it

Mar 26, 2012 at 1:15 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
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you need to check the fuel pressure to see the reading. you need to check spark too.

have the codes checked and give us the numbers.

Roy
Mar 26, 2012 at 1:17 AM
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KBROOKINS
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  • 4 POSTS
I havent changed the spark plugs could it be that
Mar 26, 2012 at 1:23 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
that wont cause it to cut off.

Roy
Mar 26, 2012 at 1:26 AM
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KBROOKINS
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how do i check fuel pressure
Mar 26, 2012 at 1:32 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
you need a gauge to connect into the fuel rail. you may need some help from a shop if you are not sure.

Roy
Mar 26, 2012 at 1:35 AM
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KBROOKINS
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ok thank you will take tomorrow
Mar 26, 2012 at 1:37 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
good luck

Roiy
Mar 26, 2012 at 1:40 AM
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