96 Chev K1500 350 Vortec 160K Miles No Aftermarket Stuff Auto Tranny
The truck will crank over but wants to backfire and tries to kick back and stalls the starter out. I towed it to a friends house that is a ex chev mechanic and he said that it was the fuel pump. I know that these rigs are notorious for going through fuel pumps. I had already replaced this pump myself about 6 years ago. I bought the pump from Schucks and they had a lifetime warranty on it. Amazingly they accepted the return and gave me a credit for the amount that I payed for it then. They don't sell that brand anymore so I bought the package deal with new floats and everything for 200. Gave it to my friend and he installed it and the truck ran. Took it home and now it is doing the same thing all over again. My friend is going to come over sometime this week and try and figure out what the problem is.
I was doing some research on TSBs and found one with the exact description that I was having. The number is 000604014. So I called up another friend that lives a long ways away and he gave me the info on it. It said to replace the crankshaft position sensor and then reset the computer. So I went and bought a sensor installed it and forgot to reset the computer before trying to start it. It changed nothing, still the same old problem. So I decided to reset the computer by disconnecting the battery, a good 10 to 15 minutes or so. Hooked it back up and still has the same problem. So I am wandering if anyone has had this same experience? I have also had the problem that other people have talked about where in 3rd gear at 60 mph or so you can just barely feel the motor hesitate or is barely missing. You have recommended to install the new fuel injector kit for this problem, do you think that this could also be tied in with the backfire problem? I forgot that a few months ago I could start the truck just fine by just barely cranking the started and it would always start right up, then it slowly got worse and worse. at the beginning it use to backfire but you could still barely get it started, once it started it ran just fine. Anyways any help would great.