Had the throttle stick open like that on FrankenWedge (My EG33 Powered XT6) right after I swapped the big motor in...on the DRAGON
...
I've been around enough to know to shut off the ignition in such cases... but it was really due to the throttle cable being to tightly adjusted, it would open the throttle past where it is supposed to, and it would "stick" open because it was getting into a zone it shouldn't have been in...but most of the time just tapping the pedal would dislodge it...
So you may want to loosen the adjustment on your throttle cable a little, if ht ecables move freely....if the cables are tight, then you probably need new cable...
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Huck
Subaru Ambassador
92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD
88 XT6 AWD 5-Speed "Bride of FrankenWedge"
15 Impreza Premium Sedan
15 Crosstrek XV 5-Speed
My 5-Speed "How-To" Write-up
1976 Pontiac Firebird Formula
Current Count of Subaru's Owned.... "70"