car is hard to start when car is cold - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-25-2005, 12:05 AM   #11
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Check your fuel pressure when you are having the problem. Cold cranking draws a lot of amps and a failing fuel pump may not be getting enough current under those conditions to properly pressurize the system.
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Old 01-25-2005, 09:21 PM   #12
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The fuel pump usually fails when warm....i would stick with the fpr diagnosis..also.its cheaper and easier to replace.....
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Old 01-26-2005, 03:58 AM   #13
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yes its really really hard to start the car the next morning but once it starts after a few tries the runs well once it warms up
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Old 01-26-2005, 10:02 PM   #14
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If it was the fuel pump it would run terribly when warm....cold startup is usually the fpr
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Old 01-26-2005, 11:17 PM   #15
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Quote:
Originally Posted by int_53185
If it was the fuel pump it would run terribly when warm....cold startup is usually the fpr
It'* the other way around. When a FPR fails it is usually the diaphram that leaks causing fuel to be sucked through the vacuum hose into the manifold causing a rich start condition. Somewhat like starting a carburated engine with the choke on (starts fine cold but very difficult warm). This would not apply in the unusual failure of the FPR sticking full open.

A weak fuel pump on the other hand may not be getting enough voltage to pump enough pressure to start the car when the starter is drawing so much voltage during a cold crank. That said, I have seen fuel pumps fail in all differnt conditions.
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Old 01-26-2005, 11:38 PM   #16
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My friends jeep did the same thing and what I told him to do is have the key in the on possition then turn the lights on for a seccond to start the flow of electric then try it and that works fine for him to get it started
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Old 01-27-2005, 01:51 AM   #17
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this morning my car wont start at all, i know its my fuel pressure regulator giving me the troube, yesterday i had the same problem it took me awhile to get the car fired up, now this morning it cranks but wont start, i just don't want to wear out the starter,
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