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Need Help With Gas Pedal Sticking
#1
Hello everyone,

I have had a problem in my mach where to gas pedal sticks so much so that the car idles at around 3000 RPM. When I leave it sitting and it warms up the problem goes away, but right now I also have a squeaky power steering belt which makes the car squeal loud nonstop with the sticking throttle.

I have checked the actual throttle cable and connection to the carburetor/throttle body, the idle adjust screw is loosened to the point where it doesn't touch anything at all. I would try adjusting it further in, but I do believe that gives the engine more gas so I left it as it is. Putting grease on the spring and cable seems to have made the problem worse.

My guess is I need a new throttle cable, perhaps this one installed is too short?

Thanks for any help in advance,
Icejawa
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#2
Do you have a spring to help pull the throttle back? I ran without one for a while and I would have to bump the throttle a few times till it dropped down. Put a spring on and it has been great since.

1971 Mustang Grandé, 351 Cleveland 2v, C6, 9"
-Fitech EFI
-Comp Cams 284hr
-Aussie Heads
-Weiand Xcelerator intake
-Long Tube Headers
-Boss Hogg "Street Bandit"


My Build
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#3
There is a spring on the actual accelerator cable sheath, but not on the gas pedal itself. The pedal flops and when i try to pick it up with my hand the car still gets gas.
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#4
Can you take a photo of the complete carb throttle linkage and post it?

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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#5
I am actually at the parts store right now, I am grabbing new v belts for the steering pump, vodazays problem he had sounds like mine
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#6
What I mean is something like this.[Image: 2_20_02_09_8_05_25_0.JPG]

1971 Mustang Grandé, 351 Cleveland 2v, C6, 9"
-Fitech EFI
-Comp Cams 284hr
-Aussie Heads
-Weiand Xcelerator intake
-Long Tube Headers
-Boss Hogg "Street Bandit"


My Build
  Reply
#7
Mine looks like this http://www.ebay.com/itm/Accelerator-Cabl...M1&vxp=mtr
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#8
I had to add an external spring similar to the one in the pic above. There are lots of different set ups you can go with.

1971 Mustang Grandé, 351 Cleveland 2v, C6, 9"
-Fitech EFI
-Comp Cams 284hr
-Aussie Heads
-Weiand Xcelerator intake
-Long Tube Headers
-Boss Hogg "Street Bandit"


My Build
  Reply
#9
(03-02-2017, 05:44 PM)icejawa Wrote: I am actually at the parts store right now, I am grabbing new v belts for the steering pump, vodazays problem he had sounds like mine

As for the belt squealing on the power steering pump a couple of notes as I had this issue....

New belt is a god place to start if your existing is old or of unknown origin, and get a good one (Gates green stripe is a good belt). A few other things...

Check the fluid level and it should be Type F trans fluid NOT power steering fluid. also check for bubbles or foaming in the fluid (this means there is air trapped and it need bled properly or there is a leak in the system)

Be sure there is adequate tension on the belt. The configuration of the PS pump makes getting leverage by yourself difficult. I used a ratchet strap attached to the garage rafter and around the pump to put just the right amount of tension on the belt before tightening it down (about 1/4 to 1/2 deflection).

Check all pulleys for grease or other contaminants and clean thoroughly. You can also lightly scuff the inside of the pulley with some 120 grit sand paper to make certain it is clean and has good grip on the belt.

Hope this helps out.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
  Reply
#10
It sounds like the fast idle is set too high when the choke activates when the engine is cold. When the choke plate closes it is connected to a cam that increases the idle speed. As the choke warms up and begins to open the fast idle cam moves down a couple of notches until it opens up fully and you go to warm engine idle speed.

Because the pedal is connected to a cable it's not possible to pull up on it to reduce the idle speed, if it is a spring issue.

The new belts, adjusted correctly, should solve your squeal.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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