once i try and give it some throttle it bogs and dies out. as long as i dont touch the gas pedal it will stay idling for a long time but then eventually dies and when i try to go and start it again sometimes it just keeps cranking and wont start at all. what could be the problem? do u think maybe the fuel pressure regulator is bad.
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1990 Chevrolet Lumina
Question: when i start my car it idles ok until i touch the gas pedal.
HAVE FUEL PRESSURE TESTED. SOUNDS LIKE ITS ON THE LOW SIDE AND WOULD CAUSE THIS
Replysieggy023, May 21, 2012, 21:52Rookie
it is low but what would cause this?
Replyglobalhelper, May 22, 2012, 05:34Master
if its the original pump its just wearing out and can't build the pressure required to run car under load
Replysieggy023, May 23, 2012, 08:37Rookie
i already replaced the fuel pump and filter when i first started having this problem. with a pressure guage attached to the test port i get about 40 psi when i turn the key to the on position but when the car is idiling its at about 20 - 22. thats not enough pressure is it? Also if i push the valve to release the pressure barely any fuel comes out.
Replyglobalhelper, May 23, 2012, 12:20Master
I BET YOU BOUGHT AN AFTERMARKET FUEL PUMP. THAT MIGHT BE THE PROB.NOT ENOUGH FUEL PRESSURE OR RESTRICTION IN LINE WHICH I DOUGHT
Answer #2MECHANICS R US from MECHANICS R US, June 26, 2012, 15:03Enthusiast
Hard to answer until you have the computer scaned for codes and some basic visual checks and other test