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#1 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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my truck accelerates when i push in the clutch
So yeah my 69 c/10 accels. when i push in my clutch and it will go down MOST of the time if i rev the engine...so any help would be nice.
By the way 250 CID with a Holley 390 CFM 4 barrel on it
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-1969 C/10 Short Step soon to be Brand NEW Ls6/T56 ![]() -03 Mazda Protege 5 -WTB 1970 Chevelle project Last edited by mwilliams5891; 12-16-2010 at 02:19 AM. |
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#2 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
anyone know why?
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-1969 C/10 Short Step soon to be Brand NEW Ls6/T56 ![]() -03 Mazda Protege 5 -WTB 1970 Chevelle project |
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#3 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: my truck accelerates when i push in the clutch
It sounds like there is some movement of the engine. Can you have someone watch the engine when you depress the clutch?
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#4 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
so what should i look for exactly? i dont mean to sound like a smart a** just wondering
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-1969 C/10 Short Step soon to be Brand NEW Ls6/T56 ![]() -03 Mazda Protege 5 -WTB 1970 Chevelle project |
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#5 |
Registered User
Join Date: Nov 2008
Location: Glenville, Pa
Posts: 445
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Re: my truck accelerates when i push in the clutch
Watch and see if your motor is rocking side to side when you press the clutch or rev the motor. If it does, you may need new motor mounts.
I'm not sure why the motor would move when you press the clutch though...
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#6 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
ok will do
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-1969 C/10 Short Step soon to be Brand NEW Ls6/T56 ![]() -03 Mazda Protege 5 -WTB 1970 Chevelle project |
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#7 | |
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Join Date: Sep 2010
Location: British Columbia
Posts: 484
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Re: my truck accelerates when i push in the clutch
Quote:
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#8 |
Where's my beer?
Join Date: Oct 2004
Location: Glen Allen, VA
Posts: 1,772
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Re: my truck accelerates when i push in the clutch
Could possibly the choke and/or fast idle be not completely releasing?
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#9 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
that is what i was thinking. since its an electric choke could it just not have enough power?
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#10 |
I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: my truck accelerates when i push in the clutch
I would suggest you also look at the linkage/cable for the throttle.It could be hung on the clutch linkage.Or the wiring for the electric choke could be shorting on the linkage.A fast idle solenoid could cause this also if it were shorting or maybe misadjusted.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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#11 | |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
Quote:
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#12 |
Just Not Low Enough!
Join Date: Mar 2009
Location: Phoenix, AZ
Posts: 525
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Re: my truck accelerates when i push in the clutch
what is the most recent repair right BEFORE this issue started?
is your carb adjusted properly, possibly when you release the load of the drivetrain via the clutch you are letting the motor return to its set idle speed... just a thought.
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NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd ![]() Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 *THE REDNECK BATTLE TRUCK* 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem. |
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#13 |
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Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: my truck accelerates when i push in the clutch
I had a similar problem in an old jeep I had. Every time the engine was under and increased load (rolled up to a rock or log), the engine rpm would go up. Push in the clutch and rpms would drop off. Turned out to be wasted engine mounts. When the engine was under load, it twisted in the mounts. This would stretch the throttle cable between the carb and firewall, opening the throttle plates and stroking the accelerator pump. Check your mounts.
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#14 |
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Location: Paradise, ca
Posts: 295
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Re: my truck accelerates when i push in the clutch
is this happening while parked and in neutral with the foot off the accelerator pedal completely?
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#15 |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
yes this will happen if i stop at a stop sign or im slowing down to stop or pretty much anytime i engage the clutch.
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#16 |
Registered User
![]() Join Date: Dec 2010
Location: Paradise, ca
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Re: my truck accelerates when i push in the clutch
here is what I would like you to try. park the truck. hold your foot on the brake. put the truck in neutral. push the clutch in and let it out. does the RPM change when you do this?
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#17 | |
Registered User
Join Date: Aug 2010
Location: Springfield, Oregon
Posts: 164
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Re: my truck accelerates when i push in the clutch
Quote:
I love laptops
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