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bad fuel pump?

Old Oct 1, 2008 | 01:55 PM
  #1  
sinatra cadillac's Avatar
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Default bad fuel pump?

hello all, my 97 deville. hard to start first thing in the morning, cranks over strong , i have to pump the gas pedal to get it going. after that it starts up fine all day. only when it sits over nite it does this. is this the sign of a bad fuel pump? i already changed the fuel filter and nothing has changed. thanks for any help. please comment with suggestions
 
Old Oct 1, 2008 | 02:08 PM
  #2  
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Default RE: bad fuel pump?

ORIGINAL: sinatra cadillac

hello all, my 97 deville. hard to start first thing in the morning, cranks over strong , i have to pump the gas pedal to get it going. after that it starts up fine all day. only when it sits over nite it does this. is this the sign of a bad fuel pump? i already changed the fuel filter and nothing has changed. thanks for any help. please comment with suggestions
what codes did the car issued ?



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Old Oct 1, 2008 | 02:19 PM
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Default RE: bad fuel pump?

Yes, ck stored codes, sounds like the fuel "rest" pressure is gone overnight. Need to verify fuel pressure running and car turned off for residual rest pressure.
 
Old Oct 2, 2008 | 08:17 AM
  #4  
sinatra cadillac's Avatar
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Default RE: bad fuel pump?

thank u thank u for the response. i will check the codes. i didnt know if it will throw any out for a bad fuel pump. i just thought when a fuel pump goes bad, it just stops working with no warning.
 
Old Oct 2, 2008 | 01:18 PM
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Default RE: bad fuel pump?

No, the codes wont say faulty pump but will report lean conditions which after testing, can verify a weak pump.
 
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