Suddenly kicks in?

Supervinnie40 · 14th August 2018, 06:55

Hi all,

Sometimes when pulling away from the lights I get the feeling that the car is holding back, then suddenly, just under 3000rpm it gives a light shock while it seems to kick in. A bit like what happens when the Turbo kicks in, except I don't have a turbo...
It is not a big problem (I think), but the car never did it. And is only starting to do it since a week orso. The jolt is not extreme, but you can feel it. It's like the engine suddenly wakes up and think "what the heck ...... I better get my gears in motion" and then spurts out a bit of extra BHP.

The AC is set to Auto/Econ and I even turned it off to see if that made a difference. I don't have other systems running that use a lot of power. No headlights and no accessoiries plugged in.

I was already planning on changing the sparkplugs, the oil, all the filters and the coolant. Just as a yearly service (which is due within the next 2 months). And I'm still working out the planning to go to the UK to get my belts and headgasket done. So, there might be a chance that this would fix it. But maybe not, you people probably know better then me...

LeRich · 14th August 2018, 20:43

Have you tried a battery reset? Any change in exhaust note?

minimutly · 14th August 2018, 23:46

Wasn't that a lionel richey song?

Lord of Hog · 15th August 2018, 05:52

Quote:

Originally Posted by minimutly

Wasn't that a lionel richey song?

"Have you tried a battery reset"?

I've never heard it

Supervinnie40 · 15th August 2018, 06:38

Quote:

Originally Posted by LeRich

Have you tried a battery reset? Any change in exhaust note?

You mean disconnecting the battery for several hours? I haven't tried that yet. I haven't noticed any change in the exhaust note, but I often have the radio turned on, so I might just not have noticed it due to music in the car. I'll have a listen on my way home from work this afternoon.

minimutly · 15th August 2018, 20:18

Quote:

Originally Posted by Lord of Hog

"Have you tried a battery reset"?

I've never heard it

"Suddenly....."

KWIL · 16th August 2018, 09:03

Just under 3000rpm you say, now that is when the first VIS motor operates. The big qustion, what is strangling your engine before that point?

Teflon · 16th August 2018, 10:19

Quote:

Originally Posted by KWIL

Just under 3000rpm you say, now that is when the first VIS motor operates. The big qustion, what is strangling your engine before that point?

That was my first thought, but Supevinnie has a 1.8, so no VIS motors.

Cliff

suzublu · 16th August 2018, 10:45

When fitting new plugs, set the gap to .75/.80mm

Your symptoms sound like when driving with aircon on, then turning it to econ, sudden gain in power

well, what there is

LeRich · 16th August 2018, 20:31

Quote:

Originally Posted by Supervinnie40

You mean disconnecting the battery for several hours? I haven't tried that yet. I haven't noticed any change in the exhaust note, but I often have the radio turned on, so I might just not have noticed it due ......

A battery reset can cure random ills and is free and easy to try.

My thought re the exhaust note was in case the cat/silencer had partially collapsed inside.

14th August 2018, 06:55	#1
Supervinnie40 I really should get out more....... Rover 75 1.8 Club Join Date: Dec 2013 Location: Tilburg (Netherland) Posts: 2,612 Thanks: 572 Thanked 336 Times in 247 Posts	Suddenly kicks in? Hi all, Sometimes when pulling away from the lights I get the feeling that the car is holding back, then suddenly, just under 3000rpm it gives a light shock while it seems to kick in. A bit like what happens when the Turbo kicks in, except I don't have a turbo... It is not a big problem (I think), but the car never did it. And is only starting to do it since a week orso. The jolt is not extreme, but you can feel it. It's like the engine suddenly wakes up and think "what the heck ...... I better get my gears in motion" and then spurts out a bit of extra BHP. The AC is set to Auto/Econ and I even turned it off to see if that made a difference. I don't have other systems running that use a lot of power. No headlights and no accessoiries plugged in. I was already planning on changing the sparkplugs, the oil, all the filters and the coolant. Just as a yearly service (which is due within the next 2 months). And I'm still working out the planning to go to the UK to get my belts and headgasket done. So, there might be a chance that this would fix it. But maybe not, you people probably know better then me... __________________ Proud owner of the Dutch "Golden 75". A much loved Gold White Metallic Rover 75 1.8 na from 2000.

14th August 2018, 20:43	#2
LeRich Posted a thing or two Rover 75 Cont SE 1.8T Join Date: Aug 2010 Location: Cheshire Posts: 1,082 Thanks: 215 Thanked 232 Times in 178 Posts	Have you tried a battery reset? Any change in exhaust note? __________________ Rover 75 1.8T Contemporary SE Auto Starlight Silver MBB

14th August 2018, 23:46	#3
minimutly Posted a thing or two mg zt Join Date: Mar 2014 Location: cardigan Posts: 1,087 Thanks: 28 Thanked 187 Times in 158 Posts	Wasn't that a lionel richey song?

16th August 2018, 09:03	#7
KWIL Precise Rover 75 Tourer 2.5KV6 Connoisseur SE Join Date: Mar 2013 Location: Fleet Posts: 2,954 Thanks: 630 Thanked 617 Times in 480 Posts	Just under 3000rpm you say, now that is when the first VIS motor operates. The big qustion, what is strangling your engine before that point?

16th August 2018, 10:45	#9
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,918 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	When fitting new plugs, set the gap to .75/.80mm Your symptoms sound like when driving with aircon on, then turning it to econ, sudden gain in power well, what there is