Intermittent start problem

Tiny
BILL49203
  • MEMBER
  • 1995 OLDSMOBILE 88
  • 107,000 MILES
The car has a new fuel pump and fresh tune up, security light goes off when key is on. It will start if you shoot either in the iac port. Intermittent start problem car runs and starts fine and once in awhile it will just crank and wont start what could it be? It has new fuel pump
Tuesday, September 13th, 2011 AT 5:57 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure if its within specs if okay check injector pulses
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Tuesday, September 13th, 2011 AT 7:10 PM
Tiny
BILL49203
  • MEMBER
  • 15 POSTS
How do I check injector pulse? I know they are all firing I pulled each injector off when car was running and it made it run rough each one I pulled off and when I put back on it smoothed out. Car runs great no missing what so ever just the intermittent start issue. It has new fuel pump, new plugs, wires and module under the coil packs
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Tuesday, September 13th, 2011 AT 8:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Here are some tests to run please follow the links

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

and

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please let us know
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Tuesday, October 21st, 2014 AT 1:22 PM

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