[Shotimes] Stiff go pedal - CHEAP FIX

[Leigh Smith]

Ian; i
Just had this same problem when I upgraded from a 89 to a 94. The 
throttle on the 94 turned out to be over TWICE as stiff as the 89. I 
could barely drive it! It just wouldn't rev.

It turned out to be the throttle springs on the throttle body. There are 
three of them wrapped together, but they were like 30% in diameter 
THICKER than my 89. (And torsional stiffness increase by the fourth 
power of diameter). I believe the number were 1.3 mm and 1.6mm.
(1.6/1.3)^4 = 2.5 TIMES AS STIFF!!
Took me 10 min to change it once I got one for $10 from Tim Dahm. The 
car was much easier to drive and it just "naturally" revved about 1000 
rpm when I drove it. :-)

My 94 MTX ha(d) a stiff throttle spring, and Terri Huffnagle's 94 ATX 
has the light one. Go figure.

Leigh


Ian Fisher wrote:
> I just drove my friend's 95 mtx 3.2/Quaife/etc etc
> 
> Torquey; just one problem that I noticed. His gas pedal is really stiff.
> Is this caused by a stretched throttle cable or a problem with spring
> tension and the number of springs on the cable? I've seen the topic come
> up before, but I don't recall what the deal was.
> 
> His brake pedal felt like my gas pedal (soft) and his gas pedal felt
> like my brake pedal (firm). Strange how driving other people's SHO's can
> reveal problems or things that you may not have otherwise find.
> 
> Ian
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