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95 olds 88 will not start

Tiny
BOBGEE
  • MEMBER
  • 1995 OLDSMOBILE 88
  • 120,000 MILES
Car is giving no codes. Car will start with starter fluid but will not stay running. I have good fuel pressure at the fuel rail. I have good spark and spark plugs look good. Injector ohm test is 11.9. Throttled body has been cleaned. This problem started as an intermittent stalling problem (engine hot or cold didn't matter and car would restart and be fine), then progressed to engine starting then dieing. At one point I unplugged tps and it started up and ran. Changed tps and it ran for 2 days and symptoms returned. When engine would run it was very smooth.
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Saturday, November 12th, 2011 AT 4:26 AM

7 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
You didn't what engine. But crank and cam sensors act up like that without codes sometimes.
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Saturday, November 12th, 2011 AT 4:39 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
Are the injectors getting power?
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Saturday, November 12th, 2011 AT 4:42 AM
Tiny
BOBGEE
  • MEMBER
  • 5 POSTS
Thank you for replying. For fixitmr: 3.8 engine. My understanding of crank sensor is that it controls spark (please correct me). And I get spark and it will start with starter fluid. For jacobandnickolas: I don't know how to check that, I dont have axcess to noids to see how it is firing.
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Saturday, November 12th, 2011 AT 5:16 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Leave gauge on to see if pressure drops before/when it quits.
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Saturday, November 12th, 2011 AT 5:36 AM
Tiny
BOBGEE
  • MEMBER
  • 5 POSTS
For fixitmr: fuel pressure stays steady. For jacob: I have 12.4 volts at injector when key is on.
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Saturday, November 12th, 2011 AT 5:48 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
The power at the injector shouldn't be constant. It should strobe when the injector fires.
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Sunday, November 13th, 2011 AT 1:50 AM
Tiny
BOBGEE
  • MEMBER
  • 5 POSTS
Thank you for replying. The voltage starts at 12.4 when power is supplied. The voltage will drop when I try to start.
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Sunday, November 13th, 2011 AT 12:41 PM

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