Hey all,

I have a 2014 Jaguar FType V8S. It's been running perfectly up to this point. Yesterday while on the road, the car suddenly started idling very rough and vibrating a lot (feels like the engine is off balance?). Exhaust note also became more tinny than usual (no more deep growl), and acceleration is quite a bit slower than usual. I pulled over after I noticed and felt that the car was still vibrating a ton.

I turned the car off for a while and turned it back on and it's been running fine ever since. No warning lights, engine temperature was in the healthy range, I had plenty of fuel.

My wildass guess is that something was maybe up with cylinder deactivation feature? Feels like I lost a cylinder for a while which threw the engine out of balance? I'm not much of a mechanic so this could be a wild *** guess.

 

First thing to do would be to scan for any stored codes. It could be something simple like a weak battery or something more complicated like an injector issue.

 

There is no "cylinder deactivation feature" on any F-Type let alone one of the very early ones like a 2014 V8S.

 

Fuel injector?

 

maybe misfire throwing off the engine balance, maybe upgrade spark plugs

 

My guess is an injector is on it's way out.

 

Oh I guess I misread. I thought there was a cylinder deactivation feature on the V8s that will turn off certain cylinders when cruising at low RPM.

Thanks for the responses I'll try to check the codes

 

Or it could just be crappy gas if you filled up somewhere new....

 

Don't these have a history injector problems at a certain mileage? I know my dealer has done full injector changes on several on warranty.

 

I recently replaced all 8 in mines. 1 died and it was siezed to the block. So I took the opportunity to replace all of them.

 

What was the outcome for this? I am having the exact same problem today in my ‘13 v8s

 

So after this happened I just turned off the car for a while and let it sit. After I turned it back on I haven't had a single issue with it since then (been about a year).

I asked about it when I took my car in for service, they took a brief look but didn't find anything glaringly wrong. I didn't wanna pay for a full check up but they said it's most likely the injector had an issue and a cylinder got deactivated. It can happen on very rare occasions but if it happens again def bring it in.

Seems like it was just a onetime glitch for me. Hopefully yours will get resolved easily too :/

 

Run a good injector cleaner through the system.