Installing a GSR Transmission on My Racecar! (Bad 2nd Gear)

One leap forward followed by a few steps backwards. The Transmission we put in the car is in need of a new 2nd gear. It grinds and can only catch it when upshifting from 1st. How am I supposed to use this without downshifting? Hope we figure this out ASAP!

[@adorno1010]

idle air control valve or a vacuum leak

[@allpurposebuildz1370]

Thanks for the feedback, I am thinking it is the IACV. I have another one we will try on the next racecar video.

[@drivingdaily582]

Could try cleaning everything ​@@allpurposebuildz1370

[@allpurposebuildz1370]

Good idea! There’s a possibility the iacv is stuck.