xk8 engine rattle Help
#1
xk8 engine rattle Help
Hello, I have a 2000 XK8, after the engine is warmed up there is a LOUD rattle coming from where the tranny meets the engine, I listened to another XK8 and heard the same rattle but much more faint than mine (barely noticable).
It is only at idle, as soon as you give it gas it goes away. Is this a common rattle for this 4.0 or not, I cant seem to grasp what the sound may be coming from, thank you in advance for any feedback.
It is only at idle, as soon as you give it gas it goes away. Is this a common rattle for this 4.0 or not, I cant seem to grasp what the sound may be coming from, thank you in advance for any feedback.
#2
#4
#5
Here's an update: got a stethoscope, and we can eliminate the cats as the problem. The rattle is definitely loudest at the bellhousing or the front of the transmission.
To summarize other symptoms:
1. Only rattles once warmed up and the engine is at low idle (~600 rpm on the dashboard tach). The noise goes away once the engine is revved above 800 rpm.
2. The noise goes away when the transmission is put in gear.
3. The transmission shifts normally.
4. No OBD II error codes.
Thanks again in advance for any insights.
To summarize other symptoms:
1. Only rattles once warmed up and the engine is at low idle (~600 rpm on the dashboard tach). The noise goes away once the engine is revved above 800 rpm.
2. The noise goes away when the transmission is put in gear.
3. The transmission shifts normally.
4. No OBD II error codes.
Thanks again in advance for any insights.
#6
#7
No I changed the torque converter just because everything was pointing to the transmission and the noise was loud at the front of the tranny still no luck I believe the noise is the pump going out, we will see, it did not quiet down much after changing the fluids.
Trending Topics
#10
I have a similar problem and rattle which seems to come from the Torque Converter…
She’s parked in the garage now so I can take my time and hopefully figure it out. I was going to start by switching out the Torque Converter but reading this thread it seems that might not be the solution! Part of me is tempted to just order a whole rebuilt transmission for $4k but the resulting divorce could end up costing even more… 😖
- sounds like marbles in a can - made me wonder if it was baffles.
- is there from cold startup and doesn’t really go away.
- Gets much worse when A/C is engaged or other electrical load is on
- disappears when driving or revved over 1500rpm.
- no codes, transmission is perhaps a little slow to engage but mostly behaves other than some surging @ 50mph UNLESS in sport mode.
- if car hasn’t moved for a week or so - it will crawl fwd in D or backward in R for a few min. Like it’s building up pressure or recirculating fluid.
She’s parked in the garage now so I can take my time and hopefully figure it out. I was going to start by switching out the Torque Converter but reading this thread it seems that might not be the solution! Part of me is tempted to just order a whole rebuilt transmission for $4k but the resulting divorce could end up costing even more… 😖
The following users liked this post:
olddavidp (07-27-2022)
Thread
Thread Starter
Forum
Replies
Last Post
99xk8guy
XK8 / XKR ( X100 )
11
06-05-2023 06:28 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)