I replaced the pump, the filter, and the short hose, I made sure the float was still moving freely, and put the whole works back together. I was able to plug the map sensor back in, the only way it would run was to drive the van with it disconnected. I got her started up and she runs like a bear, I put down about 10 feet of rubber from my michelins in the drive way, what a difference.
The O2 sensor had rusted and fallen off of the exhaust manifold. Anyway, I dropped the tank yesterday, pulled the pump, and the filter sock that was once light green was black. The problem was, the little 2 inch rubber hose that connects the fule pump to the fuel line inside of the tank, had deteriorated of the last 20 years, it expanded then split, nearly the entire length of the hose.
Hey, just wanted to tell you I fixed my 1990 GMC, it sat in a barn for 3 years with a half a tank of fuel in it. When I bought it, I put in 2 bottles of Stabil to get it to the closest gas station. Anyway, my stalling poor idle no power problem turned out not to be the EGR, EGR solenoid, the MAP sensor, the Ignition module, the TPS switch, new plugs, wires, cap and rotor. This is the sort list of everything I replaced to fix my GMC, that did not fix it. I did replace the O2 sensor.
Where's the filter sock that used to be on the bottom of the fuel pump? I am having the same issue with my 1990- 2500 GMC Van. Tomorrow, I am having the tank removed, and fuel pump replaced. I get enough fuel pressure for starting, and idling, but it doesn't idle for long. I am beginning to miss my old Ford.
good info...thanx man
LBGP6200 5 months ago
I replaced the pump, the filter, and the short hose, I made sure the float was still moving freely, and put the whole works back together. I was able to plug the map sensor back in, the only way it would run was to drive the van with it disconnected. I got her started up and she runs like a bear, I put down about 10 feet of rubber from my michelins in the drive way, what a difference.
K5H13760 1 year ago
The O2 sensor had rusted and fallen off of the exhaust manifold. Anyway, I dropped the tank yesterday, pulled the pump, and the filter sock that was once light green was black. The problem was, the little 2 inch rubber hose that connects the fule pump to the fuel line inside of the tank, had deteriorated of the last 20 years, it expanded then split, nearly the entire length of the hose.
K5H13760 1 year ago
Hey, just wanted to tell you I fixed my 1990 GMC, it sat in a barn for 3 years with a half a tank of fuel in it. When I bought it, I put in 2 bottles of Stabil to get it to the closest gas station. Anyway, my stalling poor idle no power problem turned out not to be the EGR, EGR solenoid, the MAP sensor, the Ignition module, the TPS switch, new plugs, wires, cap and rotor. This is the sort list of everything I replaced to fix my GMC, that did not fix it. I did replace the O2 sensor.
K5H13760 1 year ago
Where's the filter sock that used to be on the bottom of the fuel pump? I am having the same issue with my 1990- 2500 GMC Van. Tomorrow, I am having the tank removed, and fuel pump replaced. I get enough fuel pressure for starting, and idling, but it doesn't idle for long. I am beginning to miss my old Ford.
K5H13760 1 year ago
youll get that runnin real good she seems good
gmhater88 2 years ago