I have had an intermittent noise that appears to come from the boot or rear area of the car. It sounds like a low groaning kind or pump kind of noise. Could this be the fuel pump going bad? Are there any other items towards the rear that might make this type of noise? It seems more consistent now. Its there wether the car is in motion or at full stop.
thanks
Don
1994, XJS V12 coupe
Submitted by bonnettoboot@e… on Thu, 05/18/2006 - 00:21
Submitted by bevang139@eart… on Mon, 05/15/2006 - 17:23
Re.: groan noise coming from rear of xjs
Have a newly acquired '94 XJS and when turning sharp at slow speeds there is a "groaning" or "moaning" sound. Checked the boot and no dead animals inside. Asked the previous owner and he told me his Jaguar mechanic told him it was a "sympathetic harmonic", basically a vibration that occurs under certain driving conditions. Does this sound reasonable or is someone pulling my leg?
Submitted by NE52-32043 on Thu, 11/04/2004 - 09:47
Re.: groan noise coming from rear of xjs
Don,
Chad's suggestion is a good one. When hunting for mysterious noises, either use a mechanics stethescope (pick on up cheap at any major auto parts store) or simply use a piece of garden hose about 2 or 3 feet long. Noises will often be hard to pinpoint by the naked ear, but using a probe like the stethescope or hose will help you hear where it is really coming from. Sound is often transmitted or referred by surrounding structures, and the probe can help you isolate the source.
By way of illustration, I had a serious squeaking/squealing noise at the front of the engine on a '72 E-type V-12 I used to own that I could not isolate. Took it to a mechanic who listened, poked around, told me that it was either the water pump (which I had suspected) or the timing chain tensioner. Not wanting to spend a fortune tearing the engine apart, I took it home. A friend showed me the hose trick. We listened around the front of the engine and isolated the noise to the timing bracket on the damper pulley -- it was touching the damper and causing the squeak/squeal. A little screwdriver and in 30 seconds it was fixed. Saved mega-bucks. That piece of garden hose has become an indispensible part of my tool box.
Steve Weinstein, JTC-NJ
'70 XKE FHC
'69 XKE OTS
Submitted by JaguarXJ_S@yahoo.com on Wed, 11/03/2004 - 20:33
Re.: groan noise coming from rear of xjs
Don, fuel pumps or pump is in the fuel tank. Why don't you, while car is running, open the boot and listen at the tank. This will tell you if it is the pump or not.
You sure you don't have a cat or dog lodged back there trying to get out:):):) What about a ghost:):)
Chad Bolles
803 798 3044
It may be from the differential or even from the rear brakes,have your mechanic check the diff oil and look at the pads, it doesn't sound to serious. Jaguar affectionado and etc.