I have a 91 Chevy Silverado c1500, 130K miles. The engine has been changed from the original 4.3L to a 010 block 350, and a carberuator and HEI ignition has been installed. The in-tank fuel pump is still in, (with a regulator). After the carb was put on, the truck ran very well for about a month, but recently it has come up with a problem. The fuel pump cycles on when the key is turned on, the engine will start and run fine, but after about 30 seconds the truck will die. Looking at the wiring schematic, the Oil Pressure Sensor works fine, and the Fuel Pressure Relay is new. Is it the pump? Or am I right and if it works it works? I'm at the end of my rope and this has stumped quite a few people so far. HELP!
have the same problem?
Wednesday, March 21st, 2007 AT 2:47 AM