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Bucking when cold

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Old Feb 14, 2013 | 11:58 AM
  #61  
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Might want to check EOT sensor either with a scanner or ohm-meter. It affects timing big time. If you unplug it the CEL will set and PCM will assume a default of 212 degrees F. Easy and cheap test.
 
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Old Feb 14, 2013 | 12:35 PM
  #62  
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Originally Posted by Hussler
Exhaust Back Pressure Valve (EBPV) still plugged in? Sounds like weather is starting to get cold and it is activating on cold start ups.
Notice that you have 3.55 gears. How do you like them? I have 4.11 (or 4.10 whichever) and always wanted 3.55, any idea how much $ to convert?
 
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Old Feb 15, 2013 | 03:12 AM
  #63  
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I will measure the resistance of the EOT on monday in the workshop.
It's too cold to do it outside right now.

I was thinking, can the EOT sensor do this; At highway speeds, there is a slight stutter/hesitation and I took the van to the dealership last summer.
They connected a monitor thingy and took a test drive.
The result was that the fuel injection system had a 3 volt drop at that moment when it stutters.

At warm; there is no stutter/hesitation on full throttle, only on maintaining the speed.
At cold; it won't increase to higway speeds until it's warmed up a little, like we discussed earlier in this post.
 
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Old Feb 18, 2013 | 09:39 AM
  #64  
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EOT was measured today at 3 different temperatures, all OK.
IAT was perfect also.
ECT was way off scale??? It shows 194,5 Ohms at 30 degrees celcius.
It should show 24 k Ohms at 30 Degrees celcius.

Is the cooling water sensor giving me all this trouble
 
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Old Feb 18, 2013 | 10:45 AM
  #65  
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No. PCM doesn't use ECT
 
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Old Feb 18, 2013 | 08:14 PM
  #66  
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Originally Posted by tiopet
EOT was measured today at 3 different temperatures, all OK.
IAT was perfect also.
ECT was way off scale??? It shows 194,5 Ohms at 30 degrees celcius.
It should show 24 k Ohms at 30 Degrees celcius.

Is the cooling water sensor giving me all this trouble
Noticed you have a 1 ton van. Any idea what the gear ratio is on the 16 passenger vans approx 2005-2007?
 
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Old Feb 18, 2013 | 08:53 PM
  #67  
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Originally Posted by KP1001
Noticed you have a 1 ton van. Any idea what the gear ratio is on the 16 passenger vans approx 2005-2007?
Check the axle tag....
 
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Old Feb 19, 2013 | 08:14 PM
  #68  
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Originally Posted by tshrager
Check the axle tag....
I dont own one but I had driven one a few years back and remember being impressed with the way it ran. Thought that rear end may help contribute to my decision regarding my next purchase.
 
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Old Feb 19, 2013 | 08:48 PM
  #69  
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On the drivers door jam there is a axle code. Do a search and find what it means.
 
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