Ok I just came home from work, truck was running fine, loaded the truck lightly to go camping, get in to start the truck, itran and then sputtered off in about 3 seconds, kept starting the truck to no avail, same thing, now it won't even run just cranks over.

Fuel level was at 1/4 tank according to the gauge
Fuel pump was replaced 30k ago

I tried the intertia switch, didn't help.
I put $20 of 94 octane fuel in it, just in case the fuel gauge was broken that didn't help either.

I'm leaning towards a fuel problem just because it did start and run for a little bit so that would have me thinking that the ignition was working, but now that it doesn't start at all it could be a coil pack perhaps? or maybe a bad relay? or maybe the fuel pump needs replacing again? I would hope not because it was done fairly recently, but I have been running the truck close to empty between fill-ups

any suggestions?

 

Sounds like it is the crank sensor. Let it sit for a few hours and try again. When was the last time you replaced the fuel filter?

 

Test the voltage on the battery and get back to us. If it is at 13.6 to 14.4 volts, it will be a crank senser.

 

This problem started friday at noon, I went away for the weekend now i'm back on sunday afternoon, so it's been sitting a few days

I'll check my records but I would assume the fuel filter was replaced with the fuel pump 30k ago,

I just drained the shrader valve on the fuel rail, and then cranked the motor over several times and checked the shrader valve again and it didn't build any pressure. So the fuel pump isn't running, even if the filter was a little clogged i would think it should build some pressure at the rail. So it could be the pump/ecu relay or the fuel pump itself

I just took the ecu out to double check make sure it isn't wet at all, because I had that problem before in the past with similar symptoms.

 

Never assume anything. Just because they replaced the fuel pump does NOT mean that they replaced the filter too. If it is clogged no fuel will reach the engine.

 

I'm almost positive that the voltage is ok at the battery, around 12.6volts, (not 14v, because the truck isn't running) I have a new optima style battery in there and all the accessories are working perfectly, and it's cranking at a good speed.

isn't the crank sensor in the circuit after fuel? meaning if the crank sensor was bad the fuel pump would still run?

 

I would replace the fuel filter and go from there. It is a cheap place to start and cheap thing to rule out.

 

Pull one spark plug out and crank the trk over and see if you have spark.

 

I have spark

I guess i'll start with the fuel filter unless you guys have other ideas?