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Problem Recap and Repair Strategy

11:34
15:26
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At 11:34 in

LSA Monte Carlo: First Test Drive After 3 Years! (It Might Blow Up)

What happens here

The creator summarizes the four main issues discovered during the test drive: a power steering fluid leak, a severe drivetrain vibration, transmission slippage in 3rd and 4th gears, and a missing power steering pump bracket. He strongly suspects the drivetrain vibration is caused by an improperly adapted driveshaft housing on the 6L80 transmission (originally AWD, now used with a 2WD cover and a Turbo 400 slip yoke, lacking proper support). He believes this driveshaft issue might also contribute to the transmission slippage. He notes that the car also requires a heat exchanger to be reinstalled. Despite these problems, he emphasizes that the car is an improvement over its previous state with a 6L90 transmission, which completely failed. He plans to acquire a proper 2WD 6L80 transmission from a truck to fix the drivetrain issues.

Goal: Outline all identified problems and initial thoughts on repair

Tools and materials

  • Custom-built car — The vehicle for which repairs are being planned

What they say

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fix that right up but yeah i'd say that was a successful test drive here's what we learned well obviously the power steering leaks need to fix that two it's got a gnarly driveline vibration which i'm pretty sure i know the reason for three transmission slips in like upper gears like third and fourth and four missing that bracket down there that's not good five also bonus problem it needs a heat exchanger put back in uh but yeah that's an obvious thing i'm 95 percent sure 99 sure that driveline vibration is caused by my um like fubar together tail shaft housing for that transmission because it's an all-wheel drive 6l80 that i put the two-wheel drive cover on and use the slip yoke from a turbo 400 because the car ones have the companion flange not the slip you look like the truck ones well when that's on there the shaft kind of sticks out pretty far and doesn't have that much support so i'm fairly certain that shaft is what's causing the problem and that might also be why it's slipping because when that shaft is connected to a transfer case it's you know bolted together and it does not move it's pretty much just floating like transfer case holds itself it's not really taking any um load it's just turning where now the drive shaft is spinning off of it so if it's not properly supported it's gonna do all kinds of goofy stuff that's probably why all this is happening but it's still better than it was before because with the 6l90 in it before it straight up just stopped moving like you put it into drive and it would roll and it would move around and then it would just stop like it would come in and out of gear for whatever reason we tore it apart and the pump ended up being all scored up so that had something to do with it so i threw that thing in there just because i had a laying around i wanted the car to move again that's what it did but i think now i'm 609 nice i'm gonna scour facebook marketplace in dfw and see if anybody's got a two-wheel drive 6l90 from a truck laying around and get the ball rolling i'm getting this thing moving because now i've tasted blood i've i've felt what that thing feels like when it's starting to come into power and i want it i want it all right it's gonna be fun i forgot to

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