Jolting when accelerating (cold)

FrankstaH · 17th February 2012, 09:37

Hi guys,

I obviously don't ever go into vtec zone when my engine is cold, but recently i've noticed that when say... i'm doing 25 mph in 5th gear, and i just put my foot down (only at like 2k revs)... the car just starts violently jolting?

As soon as the engine is warmed up its fine and doesn't do it.

Just wondering if this is ok?

I'm currently running the groupn map btw, getting a custom map on monday.

Cheers

coste1l · 17th February 2012, 09:41

i dont own a ctr but 5th gear at 25 sounds too high a gear i would be in 3rd at that speed and i have a lot more torque. it may be the kangarooing that r555 and stoney have both suffered from iirc and your custom tune should help

sent from my phone

FrankstaH · 17th February 2012, 09:46

Quote:

Originally Posted by coste1l

i dont own a ctr but 5th gear at 25 sounds too high a gear i would be in 3rd at that speed and i have a lot more torque. it may be the kangarooing that r555 and stoney have both suffered from iirc and your custom tune should help

sent from my phone

I understand what your saying,

But before i fitted the flash pro it never once did this.

It actually did it second gear this morning aswell when i pulled out of my road.

Admittadly i put my foot down but my rev counter didn't go above 3k and it just stopped then picked up and went (jolted)

coste1l · 17th February 2012, 09:56

its possible the part throttle bit of the group n map isnt the greatest, has anyone else had this with the group n? mention it to your tuner im sure they will cure it

sent from my phone

ash_rage · 17th February 2012, 09:57

Can you do a data log of it? I imagine its something to do with the combination of the groupN map and your existing mods.

Btw nothing wrong with using 5th gear and doing 25mph IMO

FrankstaH · 17th February 2012, 10:13

Quote:

Originally Posted by ash_rage

Can you do a data log of it? I imagine its something to do with the combination of the groupN map and your existing mods.

Btw nothing wrong with using 5th gear and doing 25mph IMO

i'll mention it to tdi on monday. (I dont really know how to data log)

Like i said its only when the engines cold, BUT if i dont lift immediately when i start jolting the engine will stall!

I've only got a non res catback & air filter atm

And yes i do 30mph in 6th all the time

ash_rage · 17th February 2012, 10:21

Quote:

Originally Posted by FrankstaH

i'll mention it to tdi on monday. (I dont really know how to data log)

Like i said its only when the engines cold, BUT if i dont lift immediately when i start jolting the engine will stall!

I've only got a non res catback & air filter atm

And yes i do 30mph in 6th all the time

Sam or Dennis will sort it out for you I'm sure.

Datalogging is easy. Plug into car, press datalog button to start logging, press datalog button when you want to stop logging, plug into PC, download datalog onto a PC.

If you ever need help just email me.

FrankstaH · 17th February 2012, 11:21

Quote:

Originally Posted by ash_rage

Sam or Dennis will sort it out for you I'm sure.

Datalogging is easy. Plug into car, press datalog button to start logging, press datalog button when you want to stop logging, plug into PC, download datalog onto a PC.

If you ever need help just email me.

I'll speak to Mark on monday (im going to TDI South) - if no help i'll come back to you Ash

cheers

ash_rage · 17th February 2012, 11:36

Quote:

Originally Posted by FrankstaH

I'll speak to Mark on monday (im going to TDI South) - if no help i'll come back to you Ash

cheers

They will get to the bottom of it.

TDI South - yes I know them well, they did most my mods.

Their dyno setup is fantastic.

civi08 · 17th February 2012, 13:39

ive never been in 5th gear doing such a low speed. 4th would be my max at 25mph, it was probably stuttering coz your car is tuned and wanting you to match your speed to an ideal gear, just struggling a bit id have thought.

ash_rage · 17th February 2012, 14:51

Quote:

Originally Posted by civi08

ive never been in 5th gear doing such a low speed. 4th would be my max at 25mph, it was probably stuttering coz your car is tuned and wanting you to match your speed to an ideal gear, just struggling a bit id have thought.

Just had a go in mine, 6th gear was bit of a push doing 30mph tbh but 5th gear was fine. 6th gear would have been even better if I had a hot chick in the car and I still had my solid engine mounts in lol

Congrats on your eaton charger by the way, great choice.

civi08 · 17th February 2012, 15:40

Cant imagine it likes being in 5th doing 25mph lol but if it works it works! Cheers ash really happy with it

R555 · 17th February 2012, 18:39

This sounds exactly the same as the problem I had a few months back. A custom tune at Eurospec fixed mine....

J_H · 17th February 2012, 19:00

Quote:

Originally Posted by R555

This sounds exactly the same as the problem I had a few months back. A custom tune at Eurospec fixed mine....

Did you have a good time down there? Have you done a review or not? Don't want to hijack the thread...

NighthawkES · 17th February 2012, 20:43

Quote:

Originally Posted by FrankstaH

i'll mention it to tdi on monday. (I dont really know how to data log)

Like i said its only when the engines cold, BUT if i dont lift immediately when i start jolting the engine will stall!

I've only got a non res catback & air filter atm

And yes i do 30mph in 6th all the time

I'm fairly sure, driving style wise it's not exactly what Honda had in mind when they produced an engine capable of reving up to 8,500 revs. The Engine must be barely past tick over at 30mph in 6th. All that pressure on the con rods and the pistons trying their hardest to push their way through the side of the cylinder block! Try using the gears more sensibly and things will last a lot longer. Just because people say that ' they do it all the time' dosen't necessarily mean that it's the right thing to be doing. After all, you wouldn't drive around at 50mph in 1st (Or perhaps you would?) even though it's probably doing less damage to the engine than 30mph in 6th.

FrankstaH · 18th February 2012, 17:18

Quote:

Originally Posted by NighthawkES

I'm fairly sure, driving style wise it's not exactly what Honda had in mind when they produced an engine capable of reving up to 8,500 revs. The Engine must be barely past tick over at 30mph in 6th. All that pressure on the con rods and the pistons trying their hardest to push their way through the side of the cylinder block! Try using the gears more sensibly and things will last a lot longer. Just because people say that ' they do it all the time' dosen't necessarily mean that it's the right thing to be doing. After all, you wouldn't drive around at 50mph in 1st (Or perhaps you would?) even though it's probably doing less damage to the engine than 30mph in 6th.

This is the thing mate,

Before flashpro my car never even struggled, it's a very economical way of driving... swithcing into 6th once hitting 30mph!

nunoctr · 19th February 2012, 15:43

Use autotune from flashpro. It will tune your fuel at low low speeds and it will much better.

tdi-north · 19th February 2012, 22:44

Your probably find its also pulling loads of ignition as its quite loaded. A custom tune will sort it for sure

FrankstaH · 20th February 2012, 01:23

Quote:

Originally Posted by tdi-north

Your probably find its also pulling loads of ignition as its quite loaded. A custom tune will sort it for sure

i'm sure your Southern assosciates can fix that up for me in... 8 hours and 37 minutes

coste1l · 20th February 2012, 01:36

close your eyes my little soldier when you wake santa will have been....

sent from my phone

17th February 2012, 09:37	#1 (permalink)
FrankstaH Supporter Car: 58 Plate Milano CTR GT Join Date: 10th April 2011 Location: Hertfordshire Posts: 2,268 Thanks given: 33 Thanked 258 Times in 242 Posts iTrader: (10)	Jolting when accelerating (cold) Hi guys, I obviously don't ever go into vtec zone when my engine is cold, but recently i've noticed that when say... i'm doing 25 mph in 5th gear, and i just put my foot down (only at like 2k revs)... the car just starts violently jolting? As soon as the engine is warmed up its fine and doesn't do it. Just wondering if this is ok? I'm currently running the groupn map btw, getting a custom map on monday. Cheers

17th February 2012, 09:57	#5 (permalink)
ash_rage Supporter Car: CTR GT Join Date: 14th January 2010 Location: London and Essex Posts: 6,436 Thanks given: 702 Thanked 558 Times in 467 Posts iTrader: (21)	Can you do a data log of it? I imagine its something to do with the combination of the groupN map and your existing mods. Btw nothing wrong with using 5th gear and doing 25mph IMO Last edited by ash_rage; 17th February 2012 at 10:01.

Similar Threads for: Jolting when accelerating (cold)
Thread	Thread Starter	Forum	Replies	Last Post
Other Whistling when accelerating	DeshiUK	Engines and Transmission	27	1st December 2012 19:48
Engine self accelerating when cold	nighthawk_fn3	Bugs, faults and irritations	7	28th July 2010 12:19
Other Erratic Revs while accelerating	clarkey100	Engines and Transmission	4	26th March 2010 14:30
Other Noise when accelerating	dinger	Bugs, faults and irritations	11	27th August 2008 21:31
Other Accelerating smoothly - 2.2 i-CTDi	mike20	Engines and Transmission	7	11th April 2008 17:42

17th February 2012, 09:41	#2 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 17,874 Thanks given: 1,113 Thanked 1,990 Times in 1,877 Posts iTrader: (15)	i dont own a ctr but 5th gear at 25 sounds too high a gear i would be in 3rd at that speed and i have a lot more torque. it may be the kangarooing that r555 and stoney have both suffered from iirc and your custom tune should help sent from my phone

17th February 2012, 09:56	#4 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 17,874 Thanks given: 1,113 Thanked 1,990 Times in 1,877 Posts iTrader: (15)	its possible the part throttle bit of the group n map isnt the greatest, has anyone else had this with the group n? mention it to your tuner im sure they will cure it sent from my phone

17th February 2012, 13:39	#10 (permalink)
civi08 Go Hard or Go Home! Car: 2008 FN2 GT Join Date: 23rd December 2010 Location: UK Posts: 1,961 Thanks given: 153 Thanked 303 Times in 260 Posts iTrader: (2)	ive never been in 5th gear doing such a low speed. 4th would be my max at 25mph, it was probably stuttering coz your car is tuned and wanting you to match your speed to an ideal gear, just struggling a bit id have thought.

17th February 2012, 15:40	#12 (permalink)
civi08 Go Hard or Go Home! Car: 2008 FN2 GT Join Date: 23rd December 2010 Location: UK Posts: 1,961 Thanks given: 153 Thanked 303 Times in 260 Posts iTrader: (2)	Cant imagine it likes being in 5th doing 25mph lol but if it works it works! Cheers ash really happy with it

17th February 2012, 18:39	#13 (permalink)
R555 Supporter Car: 2007 CTR, Milano Red Join Date: 17th November 2009 Location: North Yorks Posts: 5,142 Thanks given: 819 Thanked 403 Times in 376 Posts iTrader: (6)	This sounds exactly the same as the problem I had a few months back. A custom tune at Eurospec fixed mine....

19th February 2012, 15:43	#17 (permalink)
nunoctr Join Date: 26th May 2008 Location: portugal - Benfica Posts: 1,819 Thanks given: 72 Thanked 197 Times in 173 Posts iTrader: (0)	Use autotune from flashpro. It will tune your fuel at low low speeds and it will much better.

19th February 2012, 22:44	#18 (permalink)
tdi-north Commercial user Join Date: 3rd May 2008 Location: Warrington Posts: 3,890 Thanks given: 131 Thanked 603 Times in 463 Posts iTrader: (0)	Your probably find its also pulling loads of ignition as its quite loaded. A custom tune will sort it for sure

20th February 2012, 01:36	#20 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 17,874 Thanks given: 1,113 Thanked 1,990 Times in 1,877 Posts iTrader: (15)	close your eyes my little soldier when you wake santa will have been.... sent from my phone