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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

1985 Mustang EFI Hard Gas Pedal

  • Thread starter Thread starter Belliott85
  • Start date Start date May 11, 2022
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Belliott85

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May 14, 2019
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Delaware
May 11, 2022
#1
  • May 11, 2022
  • #1
Hey guys, I have a recently purchased 85 5.0 LX with the CFI/EFI HO and AOD trans. The car has a weird gas pedal issue that I best can describe as it feel hard to push. essentially you can't ease into it like a normal car you have to apply more than average pressure to get it to break through then it surges forth. I have checked all the linkages, everything is moving freely, I soaked all the springs down with WD40 as well. I removed the throttle body and cleaned it with throttle body cleaner, cleaned all the electrical connections with electrical cleaner and replaced them with dielectric grease in them. When I removed the TB it looked clean and the butterflies moved freely. The car only have 58k miles. at this point i suspect the TB's electrical and or vacuum components are junk but i don't know enough about this system to tell for sure. Any ideas on what else to try? the car has one code for evap which i assume is only hoses which are dry rotted.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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Kearney, NE
May 11, 2022
#2
  • May 11, 2022
  • #2
Are you sure the throttle cable is not binding?
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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polk county florida
May 11, 2022
#3
  • May 11, 2022
  • #3
With the cable off the TB look closely at the spring area, the plastic kinda slides inside another piece and sometimes the plastic gets broken there and catches.
 
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Belliott85

New Member
May 14, 2019
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May 12, 2022
#4
  • May 12, 2022
  • #4
7991LXnSHO said:
Are you sure the throttle cable is not binding?
Click to expand...
Yes, I've had it apart and it moves just as free as the new cable I bought.
 
B

Belliott85

New Member
May 14, 2019
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Delaware
May 12, 2022
#5
  • May 12, 2022
  • #5
General karthief said:
With the cable off the TB look closely at the spring area, the plastic kinda slides inside another piece and sometimes the plastic gets broken there and catches.
Click to expand...
This is what I was thinking, visually when I had it off I couldn't see anything that jumped out to me. it also seemed to move freely when it was disconnected from the car
 
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