Excessive juddering at 3000rpm on 2004 ZT+ CDTi

aimz · 23rd May 2019, 20:07

Hi everyone, finally put my big girl pants on and bought my first MG (ZT+ CDTi pre-facelift) and, like any 15 year old car, there are a couple issues. The first is a horrific juddering when the car reaches 3000rpm in any gear. The car is quiet on start up and runs beautifully below 3000rpm but judders violently when it gets there, it doesn’t smoke or any other nastiness. I’d like to hope it’s just time for a new MAF sensor, but if anyone could shed some light on other likely problems, I’d be forever grateful!

Another (very minor) issue is that the clutch seems overly stiff, but the bite point is low, doesn’t slip, gears change smoothly etc etc. Is there anything anyone could recommend I do that might lighten up the clutch a little?

Here’s a picture of her, because I already like showing her off!

trikey · 23rd May 2019, 20:10

Heavy clutch is usually a sign of a tired slave cylinder, as for the vibration, check the lower engine mount (engine will rock forwards harshly when you switch the ign off) And check the hydramount on the drivers side chassis leg, if its failing there will be a greasy residue in the area.

23rd May 2019, 20:07	#1
aimz Newbie MG ZT Join Date: May 2019 Location: Grantham Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	Excessive juddering at 3000rpm on 2004 ZT+ CDTi Hi everyone, finally put my big girl pants on and bought my first MG (ZT+ CDTi pre-facelift) and, like any 15 year old car, there are a couple issues. The first is a horrific juddering when the car reaches 3000rpm in any gear. The car is quiet on start up and runs beautifully below 3000rpm but judders violently when it gets there, it doesn’t smoke or any other nastiness. I’d like to hope it’s just time for a new MAF sensor, but if anyone could shed some light on other likely problems, I’d be forever grateful! Another (very minor) issue is that the clutch seems overly stiff, but the bite point is low, doesn’t slip, gears change smoothly etc etc. Is there anything anyone could recommend I do that might lighten up the clutch a little? Here’s a picture of her, because I already like showing her off!

23rd May 2019, 20:10	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,764 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Heavy clutch is usually a sign of a tired slave cylinder, as for the vibration, check the lower engine mount (engine will rock forwards harshly when you switch the ign off) And check the hydramount on the drivers side chassis leg, if its failing there will be a greasy residue in the area. __________________ Lest we forget..