After driving the car if you shut it off for 10-15 minutes it will not start

Tiny
SAWYERKW91
  • MEMBER
  • 1994 GEO PRIZM
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 173,000 MILES
After driving the car if you shut it off for 10-15 minutes it will not start. It will start if you let it sit for 2 hours but not within that time frame. When it first did this I sprayed starter fluid in the intake and it fired up. Now it will only for up long enough to burn the starter fluid off. Already replaced the fuel pump and filter I do have fuel pressure at the fuel rail when this happens. The has no problem turning over the battery's not week and the starter is not draging. It seams like the injectors are not coming on. If that's the case what do I do next
Tuesday, February 4th, 2014 AT 3:59 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
You need to check if the injectors are getting power when this happens. You will need what is called a NOID light to check it. See if a parts store near you will lend you one. It just plugs into the injector wire. When you crank the engine, it should pulse on and off.
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Tuesday, February 4th, 2014 AT 4:37 AM
Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
Check for voltage pulse at the injector plugs. This is supplied by the ECM
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Tuesday, February 4th, 2014 AT 4:39 AM

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