XJ ( X351 ) 2009 - 2019

Engine vibration felt at highway speeds XJ 2013

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Old Aug 7, 2021 | 03:03 PM
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Default Engine vibration felt at highway speeds XJ 2013

Ok so on my 13 XJ I notice when going around 65mph if a manually shift to have the engine at around 1900-2200 rpm, I can feel vibration through the chassis. If its below or above that RPM there is no vibration, almost as if something's out of balance. Motor mounts possibly? Anything else it can be?
 
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2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
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Old Aug 8, 2021 | 05:00 AM
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Fraser Mitchell's Avatar
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It's something in the driveline if you can switch it on or off by chaning a gear. Motor or gearbox mounts are probably, but you need to get them checked out first, don't just throw expensive parts at the car.
 
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Old Aug 8, 2021 | 09:20 AM
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It could be the engine itself (needs tune up) are there any fault codes? Engine mounts failing? Worn out wheel bearings? Wheel/Tire needs balancing? Loose lug nuts? Old tires that wobbles or damaged alloy wheels? Did you hit something that may have damaged the under chassis/frame? and many factors. The vehicle needs to be raised and inspected from underneath.
 

Last edited by 2018XF25T; Aug 8, 2021 at 09:24 AM.
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Old Aug 8, 2021 | 04:42 PM
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Originally Posted by 2018XF25T
It could be the engine itself (needs tune up) are there any fault codes? Engine mounts failing? Worn out wheel bearings? Wheel/Tire needs balancing? Loose lug nuts? Old tires that wobbles or damaged alloy wheels? Did you hit something that may have damaged the under chassis/frame? and many factors. The vehicle needs to be raised and inspected from underneath.
Well it seems to be related to RPM not necessarily gear. It just seems to be doing it at that specific rpm , so I Don't think it can be wheel balancing or anything that has to do with drive shaft components. That's why I'm thinking it's the engine itself such as bad motor mounts..but who knows
 
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2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
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Old Aug 9, 2021 | 02:29 PM
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I'd check transmission mount first.
 
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