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04-30-2017, 08:17 PM
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#1 |
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Registered User
Join Date: Aug 2013
Location: Lake George, NY
Posts: 30
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200-4R shudder
I made a hard emergency stop that resulted in the engine/trans shuddering wildly like it was going to break off the mounts.
After driving 40 miles or so back home the shudder is greatly reduced but it is still there even in neutral. Any ideas? Thanks in advance. Ron |
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05-01-2017, 08:18 AM
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#2 |
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Senior Member
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,798
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Re: 200-4R shudder
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1942 Chevy 1/2 ton Rod, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T |
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05-01-2017, 07:00 PM
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#3 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,748
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Re: 200-4R shudder
Shudder in neutral? What makes you think its the trans then? Shudders only apply when the vehicle is moving IMO.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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05-02-2017, 06:07 AM
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#4 |
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Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,376
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Re: 200-4R shudder
Is this what happens when you don't have a brake switch to unlock the converter?
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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05-02-2017, 07:24 AM
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#5 |
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Account Suspended
Join Date: Jun 2015
Location: No longer here
Posts: 1,000
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Re: 200-4R shudder
the brake switch does not control the TCC, the brake switch disengages the TCC when you press on brake when the TCC is engaged (applied).....
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05-02-2017, 07:37 AM
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#6 |
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Senior Member
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,798
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Re: 200-4R shudder
Be interesting to find out the problem. I run a relay off the brake switch thru a T- shifter switch to trans. Like having 5 gears. Hopefully ther is a cheap fix for Ronald. . Sounds like it could be a torque converter problem. Maybe some trans gurus will jump in.
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1942 Chevy 1/2 ton Rod, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T Last edited by dennislbrooks; 05-02-2017 at 08:03 AM. |
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05-02-2017, 02:33 PM
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#7 |
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Registered User
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
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Re: 200-4R shudder
Shuddering running in neutral, foot of the brake, on level ground?
You broke a mount, most likely.
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1987 2 ton  1982 250/TH350 beater in progressDad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrappingPlus a mess o' tractors |
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05-02-2017, 02:57 PM
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#8 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,748
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Re: 200-4R shudder
Torque convertor clutch went bad after maybe 1000 miles on my old built 200-4r in a 79 c10 I had.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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05-02-2017, 10:31 PM
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#9 |
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Account Suspended
Join Date: Jun 2015
Location: No longer here
Posts: 1,000
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Re: 200-4R shudder
Drive it down to Albany on 87 at around 75 MPH and see if it still shudders when you get to Albany....If it does not shudder any more....issue fixed.
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09-22-2018, 12:48 PM
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#10 |
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Registered User
Join Date: Aug 2013
Location: Lake George, NY
Posts: 30
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Re: 200-4R shudder
Thanks for the replies. I think it was carb flooding because after driving awhile it went away. Got a new carb and no problems since.
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09-24-2018, 08:35 AM
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#11 |
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Account Suspended
Join Date: Jun 2015
Location: No longer here
Posts: 1,000
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Re: 200-4R shudder
Glad you figured it out...
At any time during the "shudder" did you smell gasoline or notice smoke coming out of the tailpipe..... when people hear the word shudder it appears they relate it to the TCC/trans....maybe it was running rough enough to feel like the engine was coming off the mounts. |
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