5.3/4L60E Squelch/Squeal
04-21-2015, 10:19 AM
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5.3/4L60E Squelch/Squeal I'm new to this forum and I apologize if I am in the wrong place, but I saw another thread related to this issue so I thought I'd post here.
I have a 5.3LM7/4L60E in my 2005 Jeep. I have done no modifications to the motor yet other than a local dyno tune. The transmission I have had modifications done to it (see below for list). Here is my problem. I went WOT throttle and while in 2nd gear, near redline RPMs, I here a squelch/squeal come from my left drivers side door. I didn't shift yet, so it wasn't because of shift. I just replaced (2 days ago) the idler pulley, tensioner, and belt with an HD fleetrunner. So I hope its not the belt because the whole system is either new or cleaned with alcohol and dried.
Anyone have any thoughts? I've read in a few places it is common for this particular transmission to make this type of noise near WOT and shifts, but I hadn't shifted yet. I just did an oil change with Dex VI 2 days ago and had no noticeable debris in the pan.
Trans Upgrades
•V8 grade sprag
•New HD sun shell
•Wide sun gear bushing
•30 spline input shaft
•Teflon coated pump bushing
•8-clutch 3rd-4th clutch pack (up from a stock 6-clutch pack for V8 models)
•Late 3-4 apply plate with integrated legs
•TransGo shift kit for strength, improved shift quality and correct timing
•All bushings and thrust washers replaced
•New, one-piece bonded forward, 3rd-4th and overrun pistons
•Hardened pump rings
•High RPM pump spring
•Low roller clutch case-saver
•All-new shift solenoids
•TransGo shift kit for strength and improved, calibrated shift timing
•Beast reaction shell
•Corvette 2nd gear piston
•29 element sprag
•New reverse input drum
•Large boost valve
•Teflon rear stator bushing
•Raybestos Blue Plate Special clutches
•Carbon, wide band
•Minimized clearances (a.k.a., blueprinting)
•5-pinion planet gears, front & rear
•Wide sun gear and stator support bushing
•Sonnax billet 4th gear "SuperHold" servo
•Borg Warner 29 element input sprag
•New pressure transducers
•High performance, furnace brazed torque converter, with carbon fiber friction internals
I have a 5.3LM7/4L60E in my 2005 Jeep. I have done no modifications to the motor yet other than a local dyno tune. The transmission I have had modifications done to it (see below for list). Here is my problem. I went WOT throttle and while in 2nd gear, near redline RPMs, I here a squelch/squeal come from my left drivers side door. I didn't shift yet, so it wasn't because of shift. I just replaced (2 days ago) the idler pulley, tensioner, and belt with an HD fleetrunner. So I hope its not the belt because the whole system is either new or cleaned with alcohol and dried.
Anyone have any thoughts? I've read in a few places it is common for this particular transmission to make this type of noise near WOT and shifts, but I hadn't shifted yet. I just did an oil change with Dex VI 2 days ago and had no noticeable debris in the pan.
Trans Upgrades
•V8 grade sprag
•New HD sun shell
•Wide sun gear bushing
•30 spline input shaft
•Teflon coated pump bushing
•8-clutch 3rd-4th clutch pack (up from a stock 6-clutch pack for V8 models)
•Late 3-4 apply plate with integrated legs
•TransGo shift kit for strength, improved shift quality and correct timing
•All bushings and thrust washers replaced
•New, one-piece bonded forward, 3rd-4th and overrun pistons
•Hardened pump rings
•High RPM pump spring
•Low roller clutch case-saver
•All-new shift solenoids
•TransGo shift kit for strength and improved, calibrated shift timing
•Beast reaction shell
•Corvette 2nd gear piston
•29 element sprag
•New reverse input drum
•Large boost valve
•Teflon rear stator bushing
•Raybestos Blue Plate Special clutches
•Carbon, wide band
•Minimized clearances (a.k.a., blueprinting)
•5-pinion planet gears, front & rear
•Wide sun gear and stator support bushing
•Sonnax billet 4th gear "SuperHold" servo
•Borg Warner 29 element input sprag
•New pressure transducers
•High performance, furnace brazed torque converter, with carbon fiber friction internals
