1989 Buick Century

Tiny
BUELLGUY
  • MEMBER
  • 1989 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
I have a problem getting fuel into this engine, fuel pump pressure is 46 psi at the shredder valve and spark is good on all cyl, replaced ignition module, coil packs, crankshaft sensor and engine control module (computer) and still no pulse width to injectors car will run on start fluid
Sunday, July 11th, 2010 AT 7:05 PM

3 Replies

Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
You may have to check for a faulty injector? Unplug them all, do an ohms test. Some specs I found, 11.8 is minimum, 12.6 is max resistance. If there is faulty injector, hopefully it didn't hurt the new computer. With the injectors unplugged, you could use a noid lite, see if the injector pulse came back on one of them.

I'd sure want to use a scanner on it, engine cranking, see rpm signal.
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Sunday, July 11th, 2010 AT 7:41 PM
Tiny
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  • 4 POSTS
Checked the ohms found faulty injector coil in 1 brought down the other five problem solved replacing all six due to higher & lower than spec. 20/10 ohm readings
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Tuesday, July 13th, 2010 AT 4:23 AM
Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
Glad you got it going your way.
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Tuesday, July 13th, 2010 AT 9:47 AM

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