clunk going into 3rd gear (4l60e)

white99ta · 12-12-2012, 02:47 PM

anyone know what would cause this? The trans the trans has about 8000 on the rebuild. The clunk only happens at low rpm's going into 3rd and downshifting from 3rd to 2nd. Their is no other issue other than the clunk. When im racing it doesnt do it at all. Tune problem?

RoadconeTuning · 12-12-2012, 04:21 PM

push the clutch in the rest of the way?

djfury05 · 12-12-2012, 04:24 PM

Quote:

Originally Posted by RoadconeTuning

push the clutch in the rest of the way?

Its a 4l60e..

Miker · 12-12-2012, 04:33 PM

Quote:

Originally Posted by RoadconeTuning

push the clutch in the rest of the way?

+1

ElecTech · 12-12-2012, 04:45 PM

Likely driveline lash exaggerated by light loads and firm shift. The problem is, if there is a lot of "mechanical" shift pressure from the shift-kit, it can be hard to soften it up enough using software. I have a similar issue with mine and it is very difficult to get rid of without causing a potential wear problem .

white99ta · 12-12-2012, 06:15 PM

Thanks jaime, do you think maybe going a little higher in stall will help reduce the problem?

Blue Skunk · 12-12-2012, 06:45 PM

A 1/4 ton of nitrous will fix the problem.

04ctd · 12-12-2012, 10:21 PM

what about a broke motor mount?

had a FerD do that when the converter locked for some reason. KLANK

pop hood, stand to one side, have someone hold it in gear, and gently rev it in Reverse & Park to see how much motor moves (dunno if that works, was always told it did...)

12-12-2012, 02:47 PM	#1
white99ta Senior Member Join Date: Feb 2012 Location: Beaufort/ Goose Creek Posts: 325	clunk going into 3rd gear (4l60e) anyone know what would cause this? The trans the trans has about 8000 on the rebuild. The clunk only happens at low rpm's going into 3rd and downshifting from 3rd to 2nd. Their is no other issue other than the clunk. When im racing it doesnt do it at all. Tune problem?

12-12-2012, 04:21 PM	#2
RoadconeTuning Senior Member Join Date: Jun 2008 Location: Upstate, SC Posts: 2,684	push the clutch in the rest of the way? __________________ FIRSBIRZ

12-12-2012, 04:45 PM	#5
ElecTech Senior Member Join Date: May 2009 Location: Charleston, SC Posts: 1,489	Likely driveline lash exaggerated by light loads and firm shift. The problem is, if there is a lot of "mechanical" shift pressure from the shift-kit, it can be hard to soften it up enough using software. I have a similar issue with mine and it is very difficult to get rid of without causing a potential wear problem . __________________ Jaime

12-12-2012, 06:45 PM	#7
Blue Skunk Senior Member Join Date: Apr 2010 Location: LA (Ladson Area) Posts: 459	A 1/4 ton of nitrous will fix the problem. __________________ Street Turtle - 08 Shelby GT500 Daily Driver - 13 Ram 2500 Cummins Turbo Diesel Track Star - 68 F100

12-12-2012, 10:21 PM	#8
04ctd Senior Member Join Date: Aug 2009 Location: Ladson SC Posts: 4,388	what about a broke motor mount? had a FerD do that when the converter locked for some reason. KLANK pop hood, stand to one side, have someone hold it in gear, and gently rev it in Reverse & Park to see how much motor moves (dunno if that works, was always told it did...) __________________ 1 Timothy 3:16 16 And without controversy great is the mystery of godliness: God was manifested in the flesh, Justified in the Spirit, Seen by angels, Preached among the Gentiles, Believed on in the world, Received up in glory.

12-12-2012, 06:15 PM	#6
white99ta Senior Member Join Date: Feb 2012 Location: Beaufort/ Goose Creek Posts: 325	Thanks jaime, do you think maybe going a little higher in stall will help reduce the problem?