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.
when i start my car it idles ok until i touch the gas pedal. on 1990 Chevrolet Lumina
by sieggy023 in San Lorenzo, CA on May 21, 2012
2 answers 4 comments
ANSWER by globalhelper , May 21, 2012
HAVE FUEL PRESSURE TESTED. SOUNDS LIKE ITS ON THE LOW SIDE AND WOULD CAUSE THIS
COMMENT by sieggy023 , May 21, 2012
it is low but what would cause this?
COMMENT by globalhelper , May 22, 2012
if its the original pump its just wearing out and can't build the pressure required to run car under load
COMMENT by sieggy023 , May 23, 2012
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.
COMMENT by globalhelper , May 23, 2012
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 by MECHANICS R US , June 26, 2012
Hard to answer until you have the computer scaned for codes and some basic visual checks and other test