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21st June 2019, 12:21 | #1 |
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Rover 75 Tourer + saloon Join Date: Apr 2019
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Vibration at idle
Hello, this is my first post as I have just bought a 2001 Connoisseur manual CDT tourer. I have been slowly reading through the forum to get a good idea about these cars.
Now the one I’ve bought does have a few issues that need to be sorted and some areas I would like to improve. The first is engine vibration at idle. The temp gauge only goes to about half way between 7 and 8 o’clock. So I will be adding an in line thermostat and also looking to fix the fuel burning heater. My question is will the engine running cool effect idle as idle is about 600 rpm, or having looked through the forum is this more likely to be just the hydramount? I tend to do all my own spannering, so have no problems delving into sorting this car - just don’t know Rovers yet, so some learning required. |
21st June 2019, 18:02 | #2 |
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rover 75 saloon cdt club se re map 160 bhp Join Date: Dec 2018
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could be hydromount or bottom engine/gearbox mount i replaced my lower engine mount last year as the rubbers were all shot easy enough job my bottom mount cost me 40 quid original as well as for the in line stat i fitted one last year got it from dmgrs for 15 quid inc postage and works very well as same easy enough job the hardest part is cutting off the metal clip. as you go down hill the temp gauge drops to zero its a fault on the deisel cars it opens too early. or you could go expensive and fit a original but is awkward as its at the back of the engine and you will have to remove the water pump rgds mark
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21st June 2019, 18:21 | #3 |
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R75 Saloon. Join Date: Feb 2009
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The slow tick over and vibration at idle could easily be an injector not quite right.---
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22nd June 2019, 10:56 | #4 |
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Thanks for replies.
What should the idle speed be? Hopefully not an injector as I guess that’s the most expensive to fix. What is the best way to go about testing the injectors? Can you read injector values with something like TOAF, and would that show if there is an issue? Would a leak down test help? I’ve ordered a copy of RAVE which I should get soon, so I will have a look through that when it arrives. |
22nd June 2019, 11:18 | #5 |
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I believe the idle speed is about 780 rpm on diesels
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22nd June 2019, 12:05 | #6 |
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i have diesel 75 and have always had the vibration at idle.
changed hydro mount and lower engine mount which improved the vibration a bit but still there. I then changed the thermostat and water pump so engine runs at right temp but still the vibration at idle. Apart from that the engine runs well. Also another thing, occasionally when steering is on full lock at idle, the idle drops so low the engine cuts out. |
23rd June 2019, 20:18 | #7 | |
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Quote:
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26th June 2019, 18:47 | #8 |
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Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008
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750rpm+/- 50rpm.
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26th June 2019, 19:15 | #9 |
This is my second home
R75 Saloon. Join Date: Feb 2009
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Having had a read through these posts again the 600 rpm tickover is probably the cause of the vibration.----
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26th June 2019, 19:55 | #10 |
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I do believe that the tick over can only be increased/decreased via aT4 or possibly Toaf
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