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General Stilo JTD Multiwagon, 300k miles (ongoing) ...

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General Stilo JTD Multiwagon, 300k miles (ongoing) ...

C

cheesequarterpounder

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Hello,

Would appreciate some advice.

Owned this car some ten years and put 200k on the clock. Amazing engine. Original gearbox, one clutch and dual mass replacement. Other than that, usual running repairs.

Am getting some vibes coming through the steering wheel, which is getting rapidly worse & I think could be a shot wheel bearing or CV joint (all original), so would appreciate some pointers before I investigate further ....

Regards

CQP
 
If you get the vibes under a light load at around 40-50mph in top (around 1500rpm on the diesel) then that might be the DMF. I presume your old one lasted around 180k so the new one could also be a little tired now. Also, verify that it's not the clutch. If the beast is making the noise and you lift off, with the clutch held in.. does the noise stop/change or is it the same? If clutch-in coasting makes no difference, then the clutch and flywheel are probably okay.

My beast also ate one of its inner CV spiders.. and that made a grumble before and also after (a completely knackered spider apparently doesn't stop the JTD.. :D ), especially if the front suspension was extended slightly (so going up a steep slope or over a long crest in the road, taken at speed). If you get the front wheels in the air, the driveshaft should not have any in/out freeplay (maybe a trivial amount). If it moves a few millimeters, then new spiders (and cups) are probably due... it's probably cheaper to buy a whole driveshaft (look up J&R).

Gearbox or engine mount wear only tends to give you rumbles/knocks/vibes when there's no load on the drivetrain. If your engine is vibey under load (light-moderate acceleration) then it's probably not the mounts.

Wheel bearings are fairly simple to diagnose.. if you're cornering under load, the bearing on the outside usually stops grumbling until you remove the load (straighten up again). You can also sometimes tell by taking the wheel off and yanking the brake disc towards you. If there's any movement that's not the driveshaft, then it's the bearing.


Ralf S.
 
Ralf S. said:
If you get the vibes under a light load at around 40-50mph in top (around 1500rpm on the diesel) then that might be the DMF. I presume your old one lasted around 180k so the new one could also be a little tired now. Also, verify that it's not the clutch. If the beast is making the noise and you lift off, with the clutch held in.. does the noise stop/change or is it the same? If clutch-in coasting makes no difference, then the clutch and flywheel are probably okay.

My beast also ate one of its inner CV spiders.. and that made a grumble before and also after (a completely knackered spider apparently doesn't stop the JTD.. :D ), especially if the front suspension was extended slightly (so going up a steep slope or over a long crest in the road, taken at speed). If you get the front wheels in the air, the driveshaft should not have any in/out freeplay (maybe a trivial amount). If it moves a few millimeters, then new spiders (and cups) are probably due... it's probably cheaper to buy a whole driveshaft (look up J&R).

Gearbox or engine mount wear only tends to give you rumbles/knocks/vibes when there's no load on the drivetrain. If your engine is vibey under load (light-moderate acceleration) then it's probably not the mounts.

Wheel bearings are fairly simple to diagnose.. if you're cornering under load, the bearing on the outside usually stops grumbling until you remove the load (straighten up again). You can also sometimes tell by taking the wheel off and yanking the brake disc towards you. If there's any movement that's not the driveshaft, then it's the bearing.


Ralf S.
Click to expand...
Thanks for taking the time to reply. Appreciated.

I have figured out that the DMF is shot. My local mechanic has advised that its a £500 fix with labour. On hard acceleration, the engine's also blowing smoke. My guess suggests that the turbo bearing deals are also shot. A s/h turbo can be sourced on ebay. With labour, another £300 (or so) fix. Additionally, I suspect that the lhs cv joint is one its way out.

I was toying with fitting a single mass flywheel instead of the dual mass.

Very reluctantly, I decided to mothball the car and use it for parts. Three years ago, I saw an 04 stilo jtd parked on the street in Enfield. Not advertised for sale, but I put a note on the screen asking if it was for sale. Bloke called me and a deal was done for £750 (96k original miles). I mothballed the new acquisition (which incidentally was in excellent condition) in a field at a farm and have only just put it on the road. One air mass sensor and a rear right brake caliper later, I'm rockin and rollin again. It even has a speedo that works (for now!).
 
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