Weird Issue: Engine jerks on deceleration?

Jaggu · 6th April 2010, 10:23

First do a complete tune up and then see if the injectors needs to be re-calibrated. Looks like a fueling issue than anything to do with overheating. To be on the safe side, check if you dont have any head gasket failure and compression loss at the cylinders.

roadracer · 9th April 2010, 16:45

Would this be a problem due to a damaged intercooler? I also faced a similar type of problem wherein my car used to jerk whenever I changed gears from 1 to 2 or from 2 to 3 during low RPMS. Also, the pick up was poor. Finally I had to replace the intercooler.

Also,please share the details once the diagnosis is done for your car and problem resolved.

Crazy_Eddy · 9th May 2010, 17:54

Frank, were you able to resolve the issue? Facing *exactly* the same problem on a Linea.

My clutch play went wonky after it went in for some work recently.. however I've noticed this weird deceleration even otherwise.

frankmehta · 9th May 2010, 17:57

Hi there. This problem was there for a few weeks, and it just 'sorted itself' out sir. I could attribute it to a situation I call sticky clutch/brakes. Something was impeding the car from going further. I don't know how to explain it, but I think you should get the brake pads/clutch setting checked. It's a small issue, annoying, but easily rectifiable!

Crazy_Eddy · 9th May 2010, 18:11

Yep I know what you mean, if feels like someone hit the brakes.
The brake pads aren't the issue in my case, since as you mentioned this behaviour doesn't show up when the gears aren't engaged.
Unfortunately for me, this isn't sorting itself out :(

Thanks

vjabraham · 9th May 2010, 21:23

I have got the same problem with my 2006 M800. The jerk is so violent with a thud that you feel something is awfully wrong. I had recently gotten my clutch overhauled!

denzdm · 7th May 2022, 17:59

I faced this issue last night where the car jerks when I leave my foot off the accelerator. It was pretty strong sometimes. It's an Xcent and the car never experienced it earlier. Will take it to the Hyundai service center this week to diagnose and rectify.

6th April 2010, 10:23	#16
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,378 Thanked: 17,317 Times	First do a complete tune up and then see if the injectors needs to be re-calibrated. Looks like a fueling issue than anything to do with overheating. To be on the safe side, check if you dont have any head gasket failure and compression loss at the cylinders.
	() Thanks

9th April 2010, 16:45	#17
roadracer BANNED Join Date: Jan 2010 Location: Chennai Posts: 131 Thanked: Once	Would this be a problem due to a damaged intercooler? I also faced a similar type of problem wherein my car used to jerk whenever I changed gears from 1 to 2 or from 2 to 3 during low RPMS. Also, the pick up was poor. Finally I had to replace the intercooler. Also,please share the details once the diagnosis is done for your car and problem resolved. Last edited by roadracer : 9th April 2010 at 16:49. Reason: I wanted to get some information.
	() Thanks

9th May 2010, 17:54	#18
Crazy_Eddy BHPian Join Date: Aug 2007 Location: Chennai Posts: 143 Thanked: 27 Times	Frank, were you able to resolve the issue? Facing exactly the same problem on a Linea. My clutch play went wonky after it went in for some work recently.. however I've noticed this weird deceleration even otherwise.
	() Thanks

9th May 2010, 17:57	#19
frankmehta Senior - BHPian Join Date: Mar 2006 Location: Mumbai Posts: 4,029 Thanked: 3,668 Times View My Garage	Hi there. This problem was there for a few weeks, and it just 'sorted itself' out sir. I could attribute it to a situation I call sticky clutch/brakes. Something was impeding the car from going further. I don't know how to explain it, but I think you should get the brake pads/clutch setting checked. It's a small issue, annoying, but easily rectifiable!
	() Thanks

9th May 2010, 18:11	#20
Crazy_Eddy BHPian Join Date: Aug 2007 Location: Chennai Posts: 143 Thanked: 27 Times	Yep I know what you mean, if feels like someone hit the brakes. The brake pads aren't the issue in my case, since as you mentioned this behaviour doesn't show up when the gears aren't engaged. Unfortunately for me, this isn't sorting itself out :( Thanks
	() Thanks

9th May 2010, 21:23	#21
vjabraham BHPian Join Date: Apr 2010 Location: Kochi Posts: 66 Thanked: 0 Times View My Garage	I have got the same problem with my 2006 M800. The jerk is so violent with a thud that you feel something is awfully wrong. I had recently gotten my clutch overhauled!
	() Thanks

7th May 2022, 17:59	#22
denzdm BHPian Join Date: Feb 2022 Location: Maximum City Posts: 98 Thanked: 426 Times	Re: Weird Issue: Engine jerks on deceleration? I faced this issue last night where the car jerks when I leave my foot off the accelerator. It was pretty strong sometimes. It's an Xcent and the car never experienced it earlier. Will take it to the Hyundai service center this week to diagnose and rectify.
	() Thanks