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5spd. Issue 2005 GT

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  #1 (permalink)  
Old 01 Nov 2017, 11:55 pm
Fresh Cruiser
Join Date: Jun 2017
Location: Estes Park, CO
Posts: 20
Default 5spd. Issue 2005 GT

Hello all, my 05 PT GT convertible manual 5spd. Doesn't like to shift when hot, and high rpm.

Previous owner stated that clutch has been replaced recently, and seems to be true. 135k miles and the clutch grips well and doesn't slip.

Issue: when hot, and high rpm (having fun wot through the gears) the clutch pedal loses all feel/stiffness when trying to depressed to change hear. The gear gets stuck until the rpm comes down and clutch pedal resistance comes back, then I can shift.

What's going wrong here???
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Old 02 Nov 2017, 11:59 am
Fk5 Fk5 is offline
Senior Cruiser
Join Date: Jul 2011
Location: Colesville, MD
Posts: 1,868
Default Re: 5spd. Issue 2005 GT

This does NOT sound like the problem that I had, but on mine the clutch and gearbox were good, but the dual mass flywheel "delaminated" causing a bunch of problems. It would stick in gear and whatever you did it would not come out. With the car shut off it would shift fine. Very strange experience. Mine was an '03 and had over 100K when the problem occurred in 2012.

Yours sounds more like a clutch issue (feel/stiffness?). The experience I have with hydraulic clutches hasn't made me dig too deep <knock wood>, but that is what it sounds like to me.
2003 GT 5 speed
162,000 miles
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Old 02 Nov 2017, 12:22 pm
Cool Cruiser
Join Date: May 2016
Location: Howell, MI
Posts: 406
Default Re: 5spd. Issue 2005 GT

Sounds like a fluid issue?

Considering RPM and clutch stiffness really don't have a common connection.

I'd just start looking at it and noting everything you notice wrong.

Fluid good and new?
Does clutch work properly when granny shifting?
What do your shift linkage bushing look like?

By not shifting, are you locked out of gear? Can you get it into neutral? does it grind if you try to shift?
03' Dream Cruiser Manual: 130k Stage 1, BOV, Koni Shocks, Eibach Springs/Sway Bars, TSW 18x8 Rims, Composite Manifold, 3inch Catless
Downpipe w/Cutout, Magnaflow Catback, Quaife LSD

04' GT Manual Purple PT Mileage: 95k (Died Spring 2018)
05' N/A Automatic Red PT Mileage:121k (Died summer 2017)
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Old 04 Nov 2017, 03:48 pm
Regular Cruiser
Join Date: Mar 2017
Location: Kokomo Indiana
Posts: 144
Default Re: 5spd. Issue 2005 GT

It sounds like a slave cylinder / throw out bearing issue. Does it make any noise when it happens? Any noise that you can hear anyway? It's probably hard to hear if it is since its at high rpm when it happens
03 gt 5 speed Stage 1
Whoever says "There's no replacement for displacement " obviously underestimates RPM
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Old 05 Nov 2017, 01:52 am
_PTGT03's Avatar
Fanatic Cruiser
Join Date: Oct 2015
Location: Abbotsford, British Columbia.
Posts: 764
Default Re: 5spd. Issue 2005 GT

follow the factory slave cylinder bleeding and filling procedure. you need a special hand pump and a hose to install the fluid from the fill point at the transmission access port. perhaps there's air in the line, or your fluid is high in moisture content and is boiling causing loss of response and feel.
2003 GT M/T in Onyx Green Pearl on Michelin Pilot Sport AS 3 Plus Tires 205/50ZR17. Dark Slate Gray Interior. OEM cargo net, parcel shelf, slush mats and trunk protector, mud flaps, mopar subwoofer. Platinum edition pedals, Neon SX 2.0 steering wheel with black+grey wrapped leather cover. Generic lowering springs, KYB gas shocks, Valeo solid flywheel conversion and clutch kit. Urethane insert engine mounts. Energy suspension full body urethane bushing kit. Chrysler premium front speakers, Jenson 6x9 rears. Boston Audio 4x55W amp. Panasonic head unit with xtenzi bluetooth. 300W AC power inverter. Escort 360max and Escort Shifter ZR4, dual front+rear dash camera. stage 1 blow off valve and syked tune computer . Boost and oil pressure gauges with Turbo-Timer. Needswings 3" exhaust elbow, Electric valve actuated Y-pipe with catalytic converter. To do: coilovers, 2step controller, quaife diff, Air-Fuel Meter
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Old 22 Nov 2017, 01:12 am
Fresh Cruiser
Join Date: Jun 2017
Location: Estes Park, CO
Posts: 20
Default Re: 5spd. Issue 2005 GT

Thank you for all replies, will have the fluid and MC checked soon. It does not emit any sounds when the issue is at hand.
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