Group,
Good afternoon. Has anyone seen reading like this on their XF from a scan tool? My scan tool (TOPDON) says it’s out of range. Please pictures. I thank you all for your inputs.

 

Ignoring your tool, is the car reporting code(s)? Which one(s)?

 

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Thank you for the reply. So I have been trouble shooting cold start problem for a little while. I have change a few components on this adventure. Here are a few to mention. Throttle body, fuel pump, high pressure fuel rail sensor, low pressure fuel pressure sensor and high fuel flow mechanical pumps. I know my passenger side catalytic converter has failed due to this no start cold weather problem.

I recently replaced the packaging on the vacuum and that seems like it might have worked. I did live data scan and these two items in the pictures are showing up in the red as I out of specs.

 

Did you have any codes pointing to replacing all those parts??
It's VERY expensive to load the parts cannon!

Can you explain what "Replacing the vacuum packaging means? Not sure?

Better to start at the beginning? Read and clear ALL codes. Drive the car and try to include when it's having problems. Next re-read the codes.

Do you have a check engine light on the dash?
Reading random data is of no help.
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Thanks for reply. I’ll try to do very best to explain from the very beginning. Every year when it starts to get cold. The car would have hard starting or sometimes no start. It started about 5 years ago.

1.We drove the car out of town to a place where it below freezing. The car to 15 mins to start needed a jump start. I replaced the battery.

2. next winter hard to start I replaced the fuel pump and fuel management relay.

3. next winter I replaced high pressure mechanical pumps and high and low fuel pressure sensors.

4. next year winter I replaced throttle body it was used.

5. this year I replaced the packing of the vacuum that is driven off the time gears for engine vacuum/ brake booster.

It only had hard starting problems when it gets cold. 30-40 degrees.

 

Right but again why did you replace all that?
What codes lead you to these repairs?
You can't fix these cars with a hope and a dream? You MUST follow the codes or you just are lost on what the car is trying to tell you?

Let's start at the beginning?
Read the codes. Next erase all codes. Next drive the car until the problem happens again. Read the new codes and post back to the list.
We can't help without some concrete data on what the car thinks is going on.
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