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VERY low RPM on idle and almost dies..

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Old Aug 7, 2007 | 09:17 PM
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Champion
Joined: Aug 2006
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From: Roanoke, Texas
Default VERY low RPM on idle and almost dies..

Well out of the blue today, my motor just looses all vaccum and starts to sound like it has a MASSIVE cam in it. Loping hardcore. All vaccum lines are ok.
Well i hooked up an Snap-on OBDII to it and watched the cyls i had missfires in cyl1, 2, 4 muti times up to 3 in each in a 10sec test, and you can feel them misfiring the truck kinda shakes and the rpms go down about 100 or so.
But now when its in drive or any gear and stopped for awhile (waiting for a train to pass) it startes to die, as in rpms get close to 100 and the vacumm goes down, and my TB sounds like its sucking in ALOT of air, and then it starts to lope really bad like its going to die, and when you give it gas it backfires like crazy and then goes back to normal for about 10 min then it does the same ****. Its still driveable at high rpms or normal 30mile ****, but when you start to idle it starts to loose it.
Like i said i hooked up the OBDII to it and it gave me some info.
cyls, 1, 2, 4 are missing
P0132 - 1/1 o2 sensor high voltage stays at about 4.5volts while the 1/2 o2 sensor stays at about .53volts
I just hasd the front o2 replaced becuase it was doing the same thing with the old one, This one lasted about 2 tanks of gas and then took a **** on me... this is the 3rd o2 sensor then did it, first ones where stock, 2nd ones where bosch, 3rd one (current one) is Mopar (or whatever the stealership uses).
my Questions are...
1. Can a BAD CAT be doing this?
2. Why would the clys be missing due to an o2 code and not show up on the codes?
3. Why is my TB making a loud vaccumm noise when its about to die
4. A Loud ticking noise (even after installing the valve covers) is coming from the passanger side, even worse then before wtf?
5. Whats the normal rating of a 1/1 and 1/2 o2 sensor voltage?
 
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