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massive rpm dropping

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Old Nov 2, 2013 | 07:23 PM
  #11  
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+1.... Fix the terminal on the battery so it's not such a PITA to remove.
 
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Old Nov 3, 2013 | 09:51 PM
  #12  
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i disconected the negitive terminal all day today, so im going to see if that fixes my problem.
 
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Old Nov 22, 2013 | 11:51 PM
  #13  
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I disconnected the battery and my truck ran great for almost 3 weeks, but it started doing it again.
Any ideas?
 
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Old Nov 23, 2013 | 12:24 AM
  #14  
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You ever fix that batt. terminal? A weak battery or a bad connection will wreak havoc with your sensors, wrong voltage getting to them, crap signals going to PCM. All kinds of weird thingshappening as a result.
If not, replace those cables, might be your whole problem right there. You can get the cables with the molded ends at O'Reillys at a reasonable price, probably other places as well. Put them on clean posts with a little dielectric grease.
 
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Old Nov 23, 2013 | 02:00 PM
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theres no corrosion on the battery termonals or wires could they still be the problem?
 
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Old Dec 3, 2013 | 08:15 PM
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I'm still having the problem and I'm going to replace the terminals with brass tomorrow. Could the pcm or map sensor be the problem? i think im going to change the cam sensor this week.
 

Last edited by ww2fishing; Dec 4, 2013 at 01:41 AM.
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Old Dec 4, 2013 | 01:18 PM
  #17  
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Could be any of a number of things. If the engine runs good though, it probably isn't the cam sensor. It just controls injector timing.

How low do your RPM drop when you let off the gas?
 
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Old Dec 4, 2013 | 06:12 PM
  #18  
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A second or two; it drops and immediately picks up again. I just replaced both the top terminals and the map sensor and right now my trucks back to running good. I also looked at the last write up from a shop i went to and they had replaced the cam sensor.
 
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Old Dec 8, 2013 | 10:21 PM
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I replaced the battery cables and map sensor and I'm still having trouble what else could it be?
 
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Old Dec 15, 2013 | 03:25 AM
  #20  
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could this be my power control module?
 
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