1991 Pontiac Sunbird Sunbird wont start

Tiny
JOSHUASDAD
  • MEMBER
  • 1991 PONTIAC SUNBIRD
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I have a 91 sunbird with a 3.1l engine. The car has sat for a about 1 year. When I tried to start it the other day it cranks over fine and it seems to be getting fuel. It has started once or twice but runs rough. When cranking and you let off the starter you hear the injectors still activating. Does any one have any thoughts Thanks for any help.
Tuesday, May 27th, 2008 AT 1:04 PM

6 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
With a car that has been sittin that long. Things can deteriiorate just from sitting. I would check my spark, check my fuel pressure, make sure that the pump is comming on, and check my map sensor. Then we can take it from there. Do those things and then get back to me. In case you dont' know how to go about checking the pressure and spark, i'll send you a couple of videos that my bosses, have come up with they are excellent quick and to the point. Hold tight and check your email
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Tuesday, May 27th, 2008 AT 1:22 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
This one here is for your ignition and spark:D

https://www.2carpros.com/car_repair_video/test_engine_ignition_system.htm
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Tuesday, May 27th, 2008 AT 1:23 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
And this one here is for your fuel system pressure.

https://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
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Tuesday, May 27th, 2008 AT 1:25 PM
Tiny
JOSHUASDAD
  • MEMBER
  • 2 POSTS
I have spark and fuel pressure. What I don't understand is why does it sound like the injectors are firing with the key on and the engine not running. I have gotten the car to start a couple of times and it seems to idle smooth but then dies.
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Wednesday, May 28th, 2008 AT 11:18 AM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
I think that you may have a problem in the switch then. It may have to be replaced
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Wednesday, May 28th, 2008 AT 8:33 PM
Tiny
KJEUDE
  • MEMBER
  • 9 POSTS
I have the same problem with my 91. When you say switch, which switch are you refering to?
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Monday, March 2nd, 2009 AT 12:23 PM

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