|
||
|
9th March 2020, 16:34 | #1 |
Loves to post
Rover 75 Saloon & MGZT 190 Join Date: Jun 2012
Location: Leek
Posts: 390
Thanks: 333
Thanked 57 Times in 39 Posts
|
throttle High revving
Hi Everybody
My MG 190 petrol 2002 has a problem with high revving when cold ,Ive removed the throttle body and cleaned and replaced the gasket set, but sometimes when its cold pulling up to a junction its upto 2000 rpm then drops slowly,i cant find any air leaks,ive read something about a pedal sensor ,would my car have this ?? or any other ideas please.Its perfect when the engine is warmed up though ?? thanks julian
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. |
10th March 2020, 10:39 | #2 |
Gets stuck in
Rover 75 2.5 V6 in Wedgwood Blue Join Date: Dec 2015
Location: Felbridge, East Grinstead
Posts: 982
Thanks: 250
Thanked 294 Times in 206 Posts
|
Sounds like either a split breather or a knackered idle valve. But if you've already looked at those then I'm out of ideas.
__________________
Conformity is not morality. Consensus is not truth. |
10th March 2020, 12:24 | #3 |
Regional Secretary
Rover 1.8T Tourer Join Date: May 2007
Location: Heathrow
Posts: 6,955
Thanks: 1,551
Thanked 2,036 Times in 1,264 Posts
|
Have you examined the idle valve, not the throttle?
|
10th March 2020, 15:18 | #4 |
Vis Whiz
Rover 75 2.5 auto Saloon Join Date: Jun 2007
Location: LEEDS
Posts: 20,590
Thanks: 2,057
Thanked 3,056 Times in 1,621 Posts
|
Have you replaced this kit on the throttle body?
https://rimmerbros.com/Item--i-MKG100260L This controls the air drawn in when cold on the KV6 and when worn is known to cause the problem you describe
__________________
Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident |
10th March 2020, 20:56 | #5 | |
Loves to post
Rover 75 Saloon & MGZT 190 Join Date: Jun 2012
Location: Leek
Posts: 390
Thanks: 333
Thanked 57 Times in 39 Posts
|
Quote:
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. |
|
10th March 2020, 20:58 | #6 |
Loves to post
Rover 75 Saloon & MGZT 190 Join Date: Jun 2012
Location: Leek
Posts: 390
Thanks: 333
Thanked 57 Times in 39 Posts
|
Yes i removed it cleaned it but didnt look anything obvious wrong but maybe i need try a replacement.
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. |
10th March 2020, 21:07 | #7 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,769
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
Have a look at the rubber hose that connects the air filter to the throttle body, if this has any leaks or not sealing properly then your revs will rise.
__________________
Lest we forget..
|
10th March 2020, 21:16 | #8 |
Loves to post
Rover 75 Saloon & MGZT 190 Join Date: Jun 2012
Location: Leek
Posts: 390
Thanks: 333
Thanked 57 Times in 39 Posts
|
Hi Trikey my car has an after market air filter fitted so would it still have that hose somewhere ?
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. |
10th March 2020, 21:18 | #9 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,769
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
Yes, its the smaller hose that pushes onto the throttle body.
__________________
Lest we forget..
|
10th March 2020, 21:26 | #10 |
Loves to post
Rover 75 Saloon & MGZT 190 Join Date: Jun 2012
Location: Leek
Posts: 390
Thanks: 333
Thanked 57 Times in 39 Posts
|
Is it the more solid plastic hose that inserts into the throttle body as it seems to have a collar to hold it in and it aint very good if its that one.
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. |
|
|