Rear End

Pharoh · February 15th, 2007, 07:15 PM

i get a jerk when i let off in my car through higher gears not so much, dont think its the brakes just replaced those. Any ideas?

97stanger · February 15th, 2007, 07:37 PM

a jerk when you take your foot off of the gas? Does it do like 3 or 4 jerks and than stop? do you have a manual?

Pharoh · February 15th, 2007, 11:48 PM

yea its a manual, no stops didnt stall it.

mustang1072 · February 15th, 2007, 11:56 PM

now when you let off the gas r u at full throttle

Steamboat 16 · February 16th, 2007, 12:11 AM

slipping clutch that grabbs when you let off the gas maybe?

97stanger · February 16th, 2007, 12:14 AM

Originally Posted by Steamboat 16

slipping clutch that grabbs when you let off the gas maybe?

i thought that also, but it would slip when he hits the gas also.

97stanger · February 16th, 2007, 12:18 AM

basic test to see if it is the clutch:

Park the car on FLAT ground.

Put the car in first gear and hold the clutch in.

Put your other foot on the brake (push it to the floor)

Slowly (very slowly) release the clutch WITH your other foot still on the brake.

Keep pulling the clutch out until it stalls out.

If you can release the clutch between 1/2 and 3/4 of the way out, you need a new clutch.

If it stalls before half way out, I would say your rear is busted and that jerk you feel is just really bad slap from the rear.

Steamboat 16 · February 16th, 2007, 12:20 AM

yah i know, but with the gas on it would be slipping, but when he lef off the gas the wheels would be moving at relitively the same speed and the engine would be dropping in rpm's until the fly wheel and the clutch were moving at the same speed and would regain traction and jolt the engine becuase of the two momentums acting against each other in an inelastic colision, the bump would be because the engine would have to keep trying to maintain its deceleration while at the same time the transmition would be trying to maintain the same speed, this would cause the engine to stop decelerating and keep speed with the clutch, causing the jerk. it would be less noticable at higher speeds cause of the different gear ratio

97stanger · February 16th, 2007, 12:23 AM

Originally Posted by Steamboat 16

yah i know, but with the gas on it would be slipping, but when he lef off the gas the wheels would be moving at relitively the same speed and the engine would be dropping in rpm's until the fly wheel and the clutch were moving at the same speed and would regain traction, this would cause the engine to stop decelerating and keep speed with the clutch, causing the jerk. it would be less noticable at higher speeds cause of the different gear ratio

It wouldnt cause a jerk though. there would be no power going to the transmission except at 800rpm. Thats the only time it would jerk.

Pharoh · February 16th, 2007, 09:56 AM

its not the trans im pretty sure it didnt do this until after i bent the axel shaft so i figured it was the rear.

February 15th, 2007, 07:15 PM	#1
Pharoh Regular Join Date: Nov 2006 Location: Chicago Posts: 69	Rear End i get a jerk when i let off in my car through higher gears not so much, dont think its the brakes just replaced those. Any ideas? __________________ 2000 Mustang 5 spd. V6

February 15th, 2007, 11:48 PM	#3
Pharoh Regular Join Date: Nov 2006 Location: Chicago Posts: 69	yea its a manual, no stops didnt stall it. __________________ 2000 Mustang 5 spd. V6

February 16th, 2007, 12:11 AM	#5
Steamboat 16 Enthusiast Join Date: Jul 2006 Location: Steamboat Springs, CO Posts: 689	slipping clutch that grabbs when you let off the gas maybe? __________________ Sex, Eating, and Driving Fast, the Three Greats in life and I can do all of them without leaving my MGM

February 16th, 2007, 12:20 AM	#8
Steamboat 16 Enthusiast Join Date: Jul 2006 Location: Steamboat Springs, CO Posts: 689	yah i know, but with the gas on it would be slipping, but when he lef off the gas the wheels would be moving at relitively the same speed and the engine would be dropping in rpm's until the fly wheel and the clutch were moving at the same speed and would regain traction and jolt the engine becuase of the two momentums acting against each other in an inelastic colision, the bump would be because the engine would have to keep trying to maintain its deceleration while at the same time the transmition would be trying to maintain the same speed, this would cause the engine to stop decelerating and keep speed with the clutch, causing the jerk. it would be less noticable at higher speeds cause of the different gear ratio __________________ Sex, Eating, and Driving Fast, the Three Greats in life and I can do all of them without leaving my MGM

February 16th, 2007, 09:56 AM	#10
Pharoh Regular Join Date: Nov 2006 Location: Chicago Posts: 69	its not the trans im pretty sure it didnt do this until after i bent the axel shaft so i figured it was the rear. __________________ 2000 Mustang 5 spd. V6

February 15th, 2007, 07:37 PM	#2
97stanger Hardcore Enthusiast Join Date: Sep 2006 Location: Sykesville, Md. Posts: 1,587	a jerk when you take your foot off of the gas? Does it do like 3 or 4 jerks and than stop? do you have a manual?

February 16th, 2007, 12:18 AM	#7
97stanger Hardcore Enthusiast Join Date: Sep 2006 Location: Sykesville, Md. Posts: 1,587	basic test to see if it is the clutch: Park the car on FLAT ground. Put the car in first gear and hold the clutch in. Put your other foot on the brake (push it to the floor) Slowly (very slowly) release the clutch WITH your other foot still on the brake. Keep pulling the clutch out until it stalls out. If you can release the clutch between 1/2 and 3/4 of the way out, you need a new clutch. If it stalls before half way out, I would say your rear is busted and that jerk you feel is just really bad slap from the rear.

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