Looking for advice on a fuel system related problem.

Symptoms:
At idle rpm drops from 600 to 400 rpm and the low battery sign flashes. If left on idle it may stall out.

Randomly, Under hard acceleration it hesitated. But after sitting for 5 hours it ran fine



Considerations:
- Recently replaced the drivers side injectors.
- Tried using gummout fuel injector cleaner through the gas tank as well as redline before replacing the injectors.
- no codes

After reviewing the F type as well as XF forums, I’m thinking the problem is the fuel pump connector. As indicated in the thread linked below. Given its a different platform, i was wondering if any one experienced something similar with there f type?
Im currently at 70k miles



https://www.jaguarforums.com/forum/x...-169540/page2/

 

I had a fueling fault on my F-Type which turned out to be the connector on the fuel pump hadn't been fitted properly and had worked loose. The symptom was random power loss under heavy fuel load. If you're getting low battery showing while the engine is running maybe your alternator needs attention?

 

By any chance do you have a picture or the connector/ do you remember where the fuel pump was located?

Had charging system tested and it was fine. Low battery flashes only when the idle rpm drops low while idling. Doesn't happen when driving

 

The fuel pump is on the right side of the engine, low down. The tech was standing under the car behind the front right wheel and reached up to access the connector. No photos, unfortunately.

Do you have any codes that might help to pinpoint the faulty area? MIne gave P0251-13

 

Low idle after recent work would have me checking for a vacuum leak. I'm not sure what needs to be removed to replace a bank of injectors but I'd start there.

Was this fault present before the injectors were replaced? That is, were the injectors replaced to address this concern or were the symptoms different?

 

Changed the injectors because one was sticking. Do not think the problem was present before.

No codes present

 

In that case, I'd check all the vacuum lines and hoses in the vicinity or that would have to be removed to gain access to the injectors. These closed systems are so sensitive that even a bad seal on the oil filler cap can cause a low idle.