XK8 / XKR ( X100 ) 1996 - 2006

2005xk8 crank no start

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Old Jan 27, 2025 | 11:20 AM
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David Wichmann's Avatar
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Default 2005xk8 crank no start

My cross pipe had a hole in it so I replaced that while I was doing that I replaced the plastic fend water pump. There was no issue with it. All the fence were intact. Shut it down normally went to start it and I got a crank no start all fuses Battery was showing 12.3 relatively new battery Attached are some codes
please if anyone can help that would be much appreciated.







these are the error codes that came up for my 2005 XK84.2
these are the error codes that came up for my 2005 XK84.2
 
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Old Jan 27, 2025 | 11:41 AM
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Perhaps a better description of what the cross pipe is and the plastic water pump along with the fence. These are not terms I relate to a 4.2L engine. Water pump is aluminum, cross pipe could be water hose or some exhaust pipe. Fence usually is a lawn fixture.
12.3V battery points to a very low battery or defective one. Please explain your terms a bit more clearly.f
 
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Old Jan 27, 2025 | 12:51 PM
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Default Crosspipe

Originally Posted by kstevusa
Perhaps a better description of what the cross pipe is and the plastic water pump along with the fence. These are not terms I relate to a 4.2L engine. Water pump is aluminum, cross pipe could be water hose or some exhaust pipe. Fence usually is a lawn fixture.
12.3V battery points to a very low battery or defective one. Please explain your terms a bit more clearly.f
Sorry Its the coolant cross pipe it’s directly over top of the water pump and it goes from one side of the motor To the other, was leaking coolant it had a crack
 
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Old Jan 27, 2025 | 12:53 PM
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Default Crank sensor?

Originally Posted by David Wichmann
Sorry Its the coolant cross pipe it’s directly over top of the water pump and it goes from one side of the motor To the other, was leaking coolant it had a crack
One mechanic told me it could be my crank sensor said that the cross pipe and the water pumper directly over top of that, and if it was dripping, it could’ve short-circuit it
 
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Old Jan 27, 2025 | 01:55 PM
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Thanks, the water outlet and thermostat housing is directly over the aluminum water pump. The Crank Sensor is at rear under the junction of engine and transmission. With so many codes, sounds like the Battery has possibly failed or poor connections on the terminals because of corrosion. Suggest you have the battery load tested. 12.5v or better is OK.
 
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Old Jan 27, 2025 | 02:03 PM
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Default Battey

Originally Posted by kstevusa
Thanks, the water outlet and thermostat housing is directly over the aluminum water pump. The Crank Sensor is at rear under the junction of engine and transmission. With so many codes, sounds like the Battery has possibly failed or poor connections on the terminals because of corrosion. Suggest you have the battery load tested. 12.5v or better is OK.
Thanks Thats definitely where I will start. It was just odd because I didn’t do anything different besides change the cross pipe and the water pump and for that to happen just didn’t make sense but I’ll definitely start with a new battery

 
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Old Jan 28, 2025 | 03:40 PM
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Many of those codes could be historic or spurious with the low battery voltage. Now you have a record, erase them if you can and see which reoccur after the battery swop.

The 4.2L should still start if the crank sensor goes out.

Has the car stood for some time, or was it just down for the maintenance?
 
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Old Jan 29, 2025 | 08:14 AM
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Default Crank no start

Originally Posted by michaelh
Many of those codes could be historic or spurious with the low battery voltage. Now you have a record, erase them if you can and see which reoccur after the battery swop.

The 4.2L should still start if the crank sensor goes out.

Has the car stood for some time, or was it just down for the maintenance?
It was just down for maintenance. I turned it off. It was running fine just leaking and then I got a crank no start. Thank you for your reply.
 
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