shaking and smoking
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Freshman User
Joined: May 2009
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From: Kentucky
shaking and smoking
The wife had the 2001 Excursion towed home. It sounds like it's not hitting on all cylinders, shaking, smoking with a strong fuel smell. I checked all fuel injectors with an ohm meter... each measured 2.7-3.5 ohms. I went on and put the ground off quarters in the connection under the valve covers, reassembled, and still had the same symptoms. I don't have access to a code reader. Where should I go from here?
Lead Driver
Joined: Jul 2003
Posts: 7,406
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From: Wheatland, Mo
I know you were already in there but I would go through the UVCH again. Not the connection now that you took care of that, but check the wiring paths under there and make sure there are none rubbing against any moving parts that could be shorting. Also make sure that all of the connectors to the injectors are definately plugged in right. I missed one when doing my Glow plugs awhile back and it looked like it was connected at a glance but was just enough off to not fire. Also check the harness over the drivers side valve cover to make sure it hasn't rubbed through against the VC causing a short there.
Senior User
Joined: Oct 2009
Posts: 453
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From: Dade City, FL
^^^ This. When I had UVCH problems a couple of years ago, it was actually the connector where the harness plugs into the valve cover gasket on the passenger's side that had failed. Give the WHOLE harness on both sides a good going over.
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Lead Driver
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Set the truck back to stock with the superchips just to be on the safe side. When you ohmed the injectors, were all the numbers different in the range you listed, or did most injectors ohm out close to each other with one being off from the rest?
It sounds like you've got one bank shut down. Figure out which bank is not firing and then pull that valve cover to check things again. If you've got one injector with an ohm reading that's off from the group on the dead side, unplug that injector before starting and see if the rest of them come back online when running.
It sounds like you've got one bank shut down. Figure out which bank is not firing and then pull that valve cover to check things again. If you've got one injector with an ohm reading that's off from the group on the dead side, unplug that injector before starting and see if the rest of them come back online when running.
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