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Where to start on this combo: P1319, P1300, P0300, P0303, P0305

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Old Oct 2, 2020 | 11:43 PM
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Frank4's Avatar
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From: MEMPHIS, TN
Default Where to start on this combo: P1319, P1300, P0300, P0303, P0305

Got all these at once. Anyone had this combo and know where to start:

P1300
P1319
P0300
P0303
P0305

been a while since my old heap gave me this kind of trouble.

The following was done last year with no issues until today. Truck isn’t bucking or anything.

new 8mm wires
new coil packs
new spark plugs
 

Last edited by Frank4; Oct 2, 2020 at 11:46 PM.
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Old Oct 3, 2020 | 01:49 AM
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Well the bad news this misfire is the result of the 1300/1319 - I would start with injectors, but some injector cleaner might help for a bit to provide confirmation
 
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Old Oct 3, 2020 | 01:10 PM
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Originally Posted by Richard Gallant
Well the bad news this misfire is the result of the 1300/1319 - I would start with injectors, but some injector cleaner might help for a bit to provide confirmation

10-4. I should have done the injectors when I did the coil packs. Anyone know what the best injector are? I’ve seen rebuild services advertised, anyone have first hand experience with rebuilds?
 
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Old Oct 3, 2020 | 04:11 PM
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The 0303 and 0305 combo suggest a coil pack. Although others have had injector issues I never had. I would start by swapping the coil packs left to right and go from there.
 
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Old Oct 3, 2020 | 10:37 PM
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Originally Posted by Extinct
The 0303 and 0305 combo suggest a coil pack. Although others have had injector issues I never had. I would start by swapping the coil packs left to right and go from there.
I get the your logic here for sure, the packs are pretty much brand new along with the wires and plugs. The low fuel code might be the first domino here. Bummer is the intake has to come off for both jobs. I’ve read claims that the coil packs can be done with the intake still on but those guys must have baby hands.

I can zip the intake pretty quick but I am just less enthusiastic about working on it these days. Anyway, I’ll get in there and post my solution.
 
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Old Oct 11, 2020 | 04:37 PM
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Ok so there is P0132 code pending which indicated high voltage in the upstream drivers O2. Could that be part of this misfire trouble I am having? I did live monitoring and it showed that the voltage would run normally and then drop to zero for a few seconds. Can anyone tell me about the fuel trim monitors ? I’ve included a picture.
 
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Old Oct 12, 2020 | 05:14 AM
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You need a monitor that will show 02 sensor voltage in a graphical format. The torque app for android as well as several iphone apps will do the trick, you need a bluetooth obd monitor though, about $5 from amazon.
 
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Old Oct 13, 2020 | 11:19 PM
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Originally Posted by Extinct
You need a monitor that will show 02 sensor voltage in a graphical format. The torque app for android as well as several iphone apps will do the trick, you need a bluetooth obd monitor though, about $5 from amazon.
there is one graph selection on my scanner. I’ll see if that does it. What am I looking for once I get there? I’ll post a shot of the graph.
 
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Old Oct 14, 2020 | 05:46 AM
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You want to see it cycling between .75v and .25 volts regularly. The voltage is not as important as the regular cycles are.
 
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Old Oct 14, 2020 | 06:55 PM
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Originally Posted by Extinct
You want to see it cycling between .75v and .25 volts regularly. The voltage is not as important as the regular cycles are.
the screen shot I posted earlier was live data. I just snapped the shot when it when back to zero volts.
 
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