Re: 2000 4.7l QC

From: John Dunlap (
Date: Tue Feb 19 2013 - 21:02:22 EST

Your intermittent loss of timing sensor might very well cause you
misfire. I had to reset mine, removed sensor after disconnecting wires
& then reinstalled and used feeler gauge to reset clearance before
reconnecting. I'm having same heater trouble and haven't even touched
those hoses or anything associated with the heater. Mine just started
the problem on it's own. Lemme know whay you find out about that.

Sent from my iPad

On Feb 19, 2013, at 6:53 PM, ""
<> wrote:

> Finally got mine running, after rebuilding both heads, new MAP sensor,
> new Cam & Crank sensors, new P.S. sensor, New Downstream O2, water
> pump, heater Core, Ball Joint (had been replaced but jerk didn't tighten
> castle Nut and messed it up!) Radiator, hoses,Muffler,plugs,filters,
> PCM... I know I'm forgetting something,,,
> anyways, finally got light
> to stay off so passed inspection, but came back on, getting p1391
> intermittent loss of cam or crank sensor...
> it DOES misfire now
> & then, cleaned connectors on both plugs, shook harness no ill
> effects?
> Any ideas???
> Also, milage
> on the 1st tank full was rotten!
> Maybe 250 miles on a 24 gal
> tank!
> It's GOT to be better than that!
> hope it's got a leak
> someplace?
> other than that runs good.
> Oh, and
> heat sucks!
> New heater core, both in and out hoses feel about the
> same so it's flowing, but only get warm air at best even with engine at
> temp.???
> Direction of flow shouldn't matter should it?
> if hoses are on wrong?
> Thanks!
> Tony.

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