Last no start from IDM, what this time?

[blt93932]

I have been driving my early 99 with no problems since I replaced the IDM back in the fall, however I've developed another no start.

I was driving the truck Tuesday, stopped in a bank drive thru, and it would not restart, after 3-4 tries it did. One other stop and it did the same thing, got to my house and it hasn't started since, I replaced the fuel filter which was very badly clogged with something, swapped the cps with the old one I had, unplugged the tuner, tried jumping it to make sure I had the right amount of voltage for the injectors to fire. It will run for a second off starter fluid (just a test!). Unplugged icp, no go.

Any idea as to what it could be? Any more tricks I should try? I do get the wait to start light.

[riley1131]

If it runs off either u got a fuel problem remove the filters in the pu would be where i start.

[blt93932]

What's the "pu"?, my fuel bowl fills up with fuel.

[riley1131]

Filters in the pick up. It will act just like a clogged fuel filter. When u let it sit tge filters will relax and it will run again. When your tuner is on it will retract faster because ur drawing more fuel through it.

[blt93932]

But there is fuel in the fuel bowl.

[blt93932]

So after two weeks of not starting it did start, it ran 30 minutes, I drove it around, running great! Shut it off and it won't start again!

[blt93932]

I replaced the IDM again, no start, then thought maybe from cranking and cranking I drained the battery, so I use my car to jump the truck, it turned over and sounded like one cylinder was firing. A quick shot of ether (I know) and it would run for a second then run off one cylinder a second, then die. Loud clanking sound when turning over. The last ime it started it ran great! Why would it only fire off a cylinder now?

Now we know the IDM was bad, batteries were drained, what's next?

[timmyboy76]

uvch mght be not plugged in all the way. Have you done the 50 cent mod, or atleast looked at the connectors outside/inside the valve cover harness?

Another thing, take compressed air and shot thru the inlet/return lines to fuel bowl, to "eliminate" any obstruction. If runs good, then i'd drop the tank an do the "hutch mod"...

[blt93932]

I haven't done a 50 cent mod or looked at connections, one thing that I keep coming back to is I have this no start problem, after sitting 2 weeks it started and ran fine, now nothing again, but since the IDM change and a jump this clacking sound when turning over.

[blt93932]

Update: I am now getting some white smoke while cranking.