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1997 Pontiac Grand Am

Tiny
CRAZYEYE 25
  • MEMBER
  • 1997 PONTIAC GRAND AM
1997 Pontiac Grand Am 4 cyl Automatic

My car won't try to fire until you put your hand on the carborator. What could it be
Saturday, January 31st, 2009 AT 5:45 AM

3 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Sounds like iuts lean. Could be a huge vacuum ;leak, bad coolant temp sensor, or weak fuel pump
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Saturday, January 31st, 2009 AT 6:13 AM
Tiny
CRAZYEYE 25
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Why do you think it could be the coolant temp sensor?Just replaced the fuel pump.
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Sunday, February 1st, 2009 AT 5:48 AM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Its purely speculation. There are tests that need to be performed to know for sure. First you would need the use of a scan tool to check the actual temperature the computer is reading from the coolant temp sensor. If the temp sensor reads hot then the computer will fire the injectors lean. You would also want to check fuel pressure and check for vacuum leaks
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Sunday, February 1st, 2009 AT 7:01 AM

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