New water pump, now it wont start. 2001 7.3 - Ford Powerstroke Diesel Forum
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Old 11-21-2007, 09:48 AM
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Unhappy New water pump, now it wont start. 2001 7.3

I have a 2001 F250 7.3L. The water pump went out two days ago. I have the new pump installed and before reinstalling the fan want to run it to make I have no leaks, but now it wont start. I have triple checked that everything is reconnected including the cam position sensor. It cranks over, but does not fire. I get the wait to start light and have confirmed that the fuel pump works. What else would keep it from running? I have heard that if the oil pressure is low or zero that it will not inject the fuel. Can anyone tell me where to find the oil pressure sensor? Possible I hit the line or sensor during removal of the pump? I have no manual/documentation, so flying blind on what little knowledge I do have.
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Old 11-21-2007, 11:17 AM
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have you removed the engine cover to check for loose wires?
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Old 11-21-2007, 11:40 AM
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does the tachometer even move?? if not, something is up with the CPS.

does the computer care whether or not the fan is plugged in?
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Old 11-21-2007, 11:43 AM
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Make sure the batteries are charged... if they're even a tad bit low it'll crank but just won't start...
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Old 11-23-2007, 04:14 PM
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Found the problem.

Thanks all for the replies. Found the problem. It was the CPS. Well, to be more specific, its was a self introduced problem. The secondary CPS line from the Juice harnes got pinch between the pump and the block. Did not see it (working on it outside in the rain with a tarp over the hood). Anyways, running my hand around the pump and wire discovered the screw up, disconnected the Juice harness and plugged the factory line directly to the CPS. Now it's running. Just gotta repair the Juice wire and can put my Juice an A2 back online.

Thanks again for the help.
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Old 11-24-2007, 05:42 AM
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Glad you found the problem, for others knowledge the tach jumping being a sign of a good CPS doesn't work on 2001 and newer trucks. Only on the 99-2000 models.
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