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Old 11-04-2010, 01:58 PM
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need help right away

my truck is barley running. I was about to change the master cylinder and decided I wanted my wheels turned to make the bleeding easier. I started my truck and the check engine light came on and it barley stays running, I was going to go get the codes checked but don't have enough power to go down the road safely. Out of no where the truck is barley running. Any suggestions quickly would help. I am supposed to start a 3000 mile trip in the morning.
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Old 11-04-2010, 02:03 PM
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where are you? how cold is it? Have you checked the fuel filter? Do you have any gauges(fuel pressure)
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Old 11-04-2010, 02:06 PM
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Michigan, truck was running great and still warm when I fired it up and had the problem, stock gauges, new fuel filter.
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Old 11-04-2010, 02:18 PM
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does it still idle ok or close to ok? Does it idle bad along with no power?
YOu can try to unplug the icp sensor. If its bad, unplugging it will set the computer to a default setting which will idle it ok.
Is it loping real real bad at idle like 1/2 or 2 of the cylinders are not working?
Try to be as descriptive as you can.
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Old 11-04-2010, 02:19 PM
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any leaks(fuel) in the valley of the motor?
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Old 11-04-2010, 03:26 PM
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The idle is rough but seems steady, There was fuel in the valley but I think that was from some previous work, I will dry it out and see, if it comes back, The best I can describe is that as soon as the truck fires the engine light comes on and it idles poorly and has no power, could maybe reach 40mph but slow to get there and the shifting seems off, its almost like the computer has put the truck into a limp home mode. Where is the ipm sensor?
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Old 11-04-2010, 03:37 PM
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the icp, injection control pressure sensor, should be drivers side head, to the front of the truck. On the inside towards the valley. Two wires coming off of it. Unplug that and start it.
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Old 11-04-2010, 05:07 PM
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Thanks for the tip, unfortunately it will have to wait until morning, if anyone else has suggestions, please post them. I am going to borrow a code puller tomorrow and see what happens. if i disconnect the icm and the truck does run, what then.
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Old 11-04-2010, 05:52 PM
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then you would need a new one. about $165 if I remember right
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Old 11-04-2010, 06:14 PM
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Thanks again, and also there was about a tablespoon of diesel in the valley, if it wasn't from previous work, what could that mean and why would it cause my truck to run the way it is.
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