I hive a 1990 1500 Silverado z71 off road ran good for about 3 minuets then would start to die out then die after cooled off would do same thing so I changed full pump and filter then realized there was no...
Cannot determine from the description of the problem if rewiring power to pump resolved the loss of the electrical power or not. Now when it dies, is there still a loss of electrical power? If there is still a loss of electrical power, ensure that the new wiring is connected to the 'Engine Switched' side of the power system. In other words, only when the engine is turned on, power is applied to the fuel pump. If power is good, mostly likely there is a clog in the fuel system (lines) between the pump and the fuel injectors. It doesn't necessarily mean trash was sucked out of tank, today's ethanol gas can trash a fuel system from the inside out. Being a 1990...vehicles back then were less compatible with ethanol. If pump has power and running, fuel lines may need a good flush (multiple flushes maybe to get it all). When it quits, a simple pressure test at the injectors may help determine if fuel is getting to engine. Keep it simple...walk the dog. Make sure you've got good pressure at pump, follow fuel line hand over hand to the next connection, test pressure again, keep going until you find loss of pressure. Good luck...these type of problems are not fun to troubleshoot, not difficult either, just time consuming.
Sep 27, 2013 |
1990 Chevrolet K1500