Not to hijack the thread, but this is fuel pump related.
When I turn my truck off (and remove the key) sometimes i can hear the fuel pump running or "winding down" for anywhere from 3-15 seconds. Any idea what that might be?
you should hear that reley click when you turn the key... you know the sound.
Also - when was the last time you changed the fuel filter?
I didn't see the fuse that was under the dash. I ordered a sender and pump anyway cause the sender is out. It's been stitting for about 18 months but started every couple months, before it was parked it had a gm motor put in at the dealer maybe 1k on this motor. I guess I'll just have to trailer it.
Are there any pics of what I should have on mine? Someone please post.Nice K5. There must be a carb on your new engine instead of the stock TBI?