ABUSED Z06 CORVETTE NO START NO CLUTCH PART 2 OF 3

hey guys what's up it's eric with advanced level automotive you know what time it is it's time to put the wiring harness in the corvette all right guys so if you've been following the channel for a while it's probably a good chance you know all about this corvette right behind me and if you're new make sure you subscribe anyway so for those who don't know right behind me i have a 1999 chevrolet corvette this thing's got a big old honking 5.7 liter v8 engine and if you guys couldn't already tell this thing's been used and abused anyways the customer wants to see if we can get this thing running again just to get it drivable probably so he can continue abusing it which is kind of sad if you ask me so if you guys watch the first video you already know this thing needs a wiring harness we were able to locate one all right so over here we have the wiring harness and it's pretty much laid out the way it's going to go into the vehicle right over here is where it's going to connect to the computer so we have these two connectors that go to the computer this uh big connector is going to go to the fuse box and there's a few other connectors down there which are located in this area the engine computer is actually located right here in the fender well so the harness runs up through here again this is the fuse block this is where it's going to connect to there's a few other connectors right down here and then the wiring harness is going to run up and over behind the intake manifold and we have uh this part of the wiring harness that goes over this valve cover that connects to the coils right here and the injectors and then the same on the other side of the intake manifold and if i show you on the wiring harness so we're going from the computer fuse box over to the intake manifold this goes on the passenger side of the intake manifold and we have the connector for the coils and the injector connectors right here and then this is going to go on the other side of the intake manifold right here and uh if you look injector connectors the ignition coil connector then we have the connector or the wire to the alternator and the connector for the alternator and then these wires that extend down here i believe this may go to the crankshaft position sensor if i'm not mistaken and then over here we have the harness that goes behind the uh engine and it's got the connector for the o2 sensor it's got this other connector i'm not really sure what it's for and a few other connectors then this right here goes behind behind the intake manifold and we have a connector i believe this is for the camshaft position sensor if i'm not mistaken and oil pressure sensor and then we have the o2 sensor connector which i may actually have to take off of the other harness so some of these connectors are broken this is a used wiring harness so i may have to cut off a few pieces from the old one and move it over to the new one and i believe in this case we may have to remove the intake manifold to get to the harness on the back side because there really is no room between the firewall and the intake manifold so yeah i think first things first let's go ahead and pull this wheel off pull the fender liner off and see if we can get to the engine computer check out these brakes look how much pad is left right in there this thing's pretty much uh gonna need new brakes probably all around i mean i don't know if we can get rid of this surface rust but yeah it's definitely going to need some breaks anyway so we're going to go ahead and remove this panel and the ecm should be right behind here all right so now that we have the cover off you can see this is where the ecm is located and it's mounted inside of this bracket here which i believe there's two bolts one on each side that we need to remove in order to open up this bracket but if you can see from the bottom you'll see the two main connectors right here for the ecm so there's a couple of uh looks like eight millimeter bolts we're gonna have to remove and then we can pull these two connectors off so let's go ahead and do [Music] that all right guys so now that we have the bracket loose for the ecm we can go ahead and pull on the ecm flip it around get all this dirt off here i'm gonna go ahead and take the two screws off for the connectors they're actually seven millimeters so let's go ahead and get these off we kind of shake that dirt off lots of dirt in here [Music] there's one of them the second one now i can go ahead and pull these connectors off and we have the ecm right here and these are our two connectors you got to be careful because these weather stripping pieces tend to fall off so you don't want to lose these make sure you put them back into the connector we're replacing this harness and i don't even think it came with them so we're gonna reuse these okay now looking at this thing looks like this harness runs up through here behind the battery tray and up over here above the fender liner which i'm not even really sure about this fender liner because it looks like it's made out of fiberglass let me show you over here on this side looking at this fender liner on this side you can see what i'm talking about kind of looks like this fender liner is made out of fiberglass so it feels like a pretty solid piece i'm not sure if it's that easy to remove so i think what we're going to do is go ahead and maybe remove the battery tray try to follow this harness up and see if we can disconnect it from up there all right now looking over here from the top um we've already got the battery disconnected which was actually the first thing i did forgot to mention that let me just go ahead and remove the battery it's really not even bolted down all right now looking in the area where the battery was this is the battery tray here you can actually see that the harness comes up through here and there's a couple of connectors that are attached to the wiring harness these two round connectors right here are part of the wiring harness that we're replacing so i do believe we may have to remove this battery tray but looking at this thing uh looks like there's three bolts in here but they're pretty rusted so hopefully those things come out without any trouble also we are gonna have to remove the fuse box because the connector that goes underneath so this is going to have to come out so that we can replace that [Music] connector [Music] all right guys so i was able to remove the battery tray just had to use a little bit of pb blaster penetrant fluid on those rusted bolts but they came out pretty easy now if we look down here where the battery tray was now we can see everything so looking over here this is the wiring harness that comes from the computer runs over this way again we have a couple connectors that branch off the harness the connect to these two gray connectors here and then we have the part of the harness that branches off and goes to this fuse box so we're going to go ahead and remove the fuse box and then if you look over here if you follow the wiring harness it runs over there and oh hey i found a socket binders keepers looks like a 9 16 well we don't really use these too often in the garbage can ah i completely missed that now it actually looks like this piece it's not really attached to anything so i think i can just pull it right off oh yeah there you go nice now i can see it even more now one thing i don't like is if i follow this wiring harness back uh it actually looks like it goes to the starter motor so i may actually have to remove the starter motor but this thing has these aftermarket long tube headers so that starter motor is probably going to be a real pain in the you know what to get it out i may end up having to remove these headers as you can tell they look pretty rusted so hopefully none of these bolts break when i go to remove them but i guess first things first let me go ahead and uh get this fuse box out and see if i can start pulling the wiring harness out through here [Music] all right guys so i managed to pull this part of the wiring harness up and out and as you can see these are the two connectors for the ecm right here and this is the connector for the fuse box right here but one interesting thing that i found uh when i was pulling the harness up i thought that there was only two connectors down there which were the two for the ecm because when i looked at the used wiring harness that we got it looks like there's only just the two ecm connectors but as i was pulling it up i actually found that this right here was connected to that control module that's part of the bracket that goes in front of the ecm so i had to disconnect this well then i was curious why does this one have this leg of the harness for the connector for that module alongside these two ecm connectors so let me show you the harness that we got so again it's laid out like it's pretty much laid out on the vehicle we have the two ecm connectors right here and if you look right over here where the other leg of the harness branches off you'll actually see that they sliced it off well that's gonna suck because i'm gonna have to uh cut the harness or that part of the harness off the old one and attach it to this one all right so moving back to the vehicle i think before i try to attack the intake manifold i want to raise up the vehicle and i want to see if we can attack the starter first [Music] all right guys so we got this thing up in the air i'm really not even sure where to begin with this one because uh disaster is kind of an understatement [Laughter] oh my gosh i'm not really sure what i got myself into here this car is on the next level of needing some help i mean just looking underneath i mean all of this stuff i'm not even really sure what the hell all of this is we've got loose connectors we've got wiring harnesses laying everywhere we have loose fitting stuff i mean we've got giant oil leaks i'm not really sure where the oil leaks coming from because there's oil everywhere and it left a pretty big oil spot over here and where it was parked in the front of the shop it left a huge oil spot so yeah we've got some uh major oil leak problems if you look all on the front we have oil pretty much everywhere i mean this is a this is a pretty bad leak i mean just looking at this thing wow look at this belt that's not even on there straight that belt looks like it's getting ready to come off anyway so uh going back to the starter motor again this thing has long tube headers looking up in here you can see the starter is buried in here and i don't even know if you can see the starter bolt looks like the starter bolt is right in there one of them so in order for me to even get to that starter i'm gonna have to remove this rusted up long tube header i can see part of the wiring harness there's a connector there's two connectors you can see they're both melted it's a oxygen sensor connector and i'm not even really sure what this went to but this is completely melted so yeah we're gonna have to uh replace this wiring harness here now looking over here two oxygen sensors they have a the wiring harness is cut off but those are the downstream so those really don't matter because there's no catalytic converters on this vehicle as long as it's got the upstream oxygen sensors which this is the part of the wiring harness right here that is really badly burned up so if you look up in here hopefully you guys can see how that wiring harness is completely cooked yeah you can see this connector for the oxygen sensor is completely burned on both ends the harness that comes from the oxygen sensor and the other side that comes from the vehicle man look at that that's that's the two connectors melted together let me show you guys you can see the the terminals in there look how cooked that thing is oh yeah so anyways it's gonna need a new oxygen sensor here oxygen sensor is located somewhere where is it man i can't even see this oxygen sensor this header is going to have to come off too and looking at this side they didn't even bother to put the oxygen sensor in the bung hole here yeah that's what it's called it's called a bong hole i'm not looking at this thing i'm not even really sure if there's enough space here to have an oxygen sensor so that may actually be a problem but man this wiring harness it's pretty bad i mean you guys can see well actually this is actually a separate harness from the one that we are replacing i'm not sure where this wiring harness goes to but you can see it's burnt up too see if we follow it up to the front comes over here oh man where does this wiring harness go to this is probably for the uh for the front lights and electronics because uh it runs up to the front here somewhere i mean now looking up here oh light bulbs aren't even installed look they're completely blown and busted up and looking at the other side same thing these lights are why are they hanging out like this though they're not even installed and the bulbs are busted and burned i mean it's pretty evident this thing wasn't a front-end collision definitely was in some sort of accident this is quickly becoming my worst nightmare my second worst nightmare well my third worst night i got a lot of nightmares anyway i guess there's really no way around this thing we're gonna have to pull both of these headers off which is gonna be a real pain in the you know what but uh if the customer's willing to pay i guess let's do it all right guys so i went ahead and i soaked the header bolts with the penetrant fluid pb blaster and i let it sit for a while so now we're going to go ahead and see if we can unbolt the headers so that we can remove them [Music] all right so now that we have the headers unbolted from the top we're gonna go ahead and raise the vehicle and get the ones from the bottom [Music] [Music] now it looks like i can actually pull this one right out from the bottom there we go man this thing is nasty now this other one i'm not really sure if i can just pull it out i may have to try to get this one out of the top but if i do that that's probably going to require the removal of the alternator signs like this i miss having uh workers i could just tell them pull this out well let's go ahead and lower the car and try to pull it from the top side you know what i think i may have figured out what's holding up this header there's a ground strap right here and that strap is going around the header so it's keeping it from coming out so i think if i remove that bolt for the ground strap i might be able to pull this header out from the bottom here's the bolt for the ground strap oh there it goes move this ground strap out of the way let's see if we can finagle this thing out of there this might be easier if i just disconnect the clutch line we're gonna have to bleed it anyway because we're gonna have to replace the master cylinder let me pop this line out there goes the clip don't worry i see where it landed there we go i got that line out of the way she's eager to come out there we go what'd i tell you all right guys so now that we have both of the headers removed we can see the full extent of the damage to the wiring harness and you can see just how much havoc and destruction these headers have put on this wiring harness let me get the light up in here okay you see all of this engine wiring harness is all cooked pretty badly and on the other side over here where the starter motor was you can see it kind of did the same thing here so we have some melted connectors melted wiring so yeah now the other thing is that there is another wiring harness so apart from the engine wiring harness now that we have all of this taken out i can see that this harness right here that's also burned up is actually not a part of the harness that we're replacing this is actually a separate harness and i mean you see it's this thing's also going to need to be replaced so now that's another issue and actually if i look at these wires it kind of looks like somebody tried to twist tie them together so this must have been an issue already and somebody i guess attempted to repair this now i really wasn't sure what this harness was for so i followed it up and around and one of the things it looks like it goes to is the wheel speed sensor over here so apparently that wiring harness has something to do with the abs system i mean it's possible that it also controls the cooling fans because the fans are up in the front over there so i mean yeah that harness is probably going to need to get replaced also anyways at this point the plan is to go ahead and wrap both of the headers with an insulation and replace this wiring harness i'm gonna see if we can find the other wiring harness if we can't and we're just kind of in a time crunch here because i really don't want this corvette tying up the lift while we're looking for a wiring harness for this thing so i may attempt to just repair the wires that are there for that harness and of course we're going to insulate those wires and insulate all of this stuff all of this stuff is going to get insulated it's going to be pushed away from the header and the header is also going to get wrapped so that's the plan of attack here now of course the next thing we still need to do after we do the engine wiring harness is we need to replace the clutch master cylinder and the pedal bracket which the customer was able to find uh used off of the internet so we got the clutch pedal and the bracket let me show you all right so over here on the table we have the clutch pedal uh bracket and if you remember from the first video it was actually cracked right here and uh he got this used master cylinder so we're gonna go ahead and install this and if you recall from the last video this rod was completely bent and so i kind of had a theory about what happened now because the way this master cylinder installs into this bracket is if you look this side goes up against the firewall and it's sort of a square shaped and that's how the master cylinder installs it's not bolted in it has this kind of square piece around it and so when you install this you're supposed to shove it in like this and then turn it clockwise and it'll lock into place so i guess my theory is that it's possible that whenever someone tried to install the master cylinder uh they didn't install it correctly they may have put it in and not fully engaged the locking tabs well if it even has any locking tabs i'm not sure i guess it just kind of pressures itself up against it whenever you turn it so anyways either it was installed incorrectly and it must have slipped out of the hole came out a little bit and whenever somebody went to push the pedal you know they must have put all of their force into it and when they pushed it this rod must have kind of jammed itself up against the side of the bracket and whenever they pushed the pedal hard enough it caused it to push the master cylinder and the rod up against the bracket and that's why the bracket ended up breaking and that's why the rod ended up bending i don't know if i'm explaining that very well but that's my theory on it so anyways after the wiring harness is installed we're going to need to install this all right time to remove the intake [Music] manifold [Music] [Music] [Music] all right guys so now that we have the intake manifold removed you can see the connectors back here that uh we need to remove it's gonna be the one for the camshaft position sensor here and the one for the oil pressure switch right there and there's a well supposed to be a ground strap here but it looks like somebody had wired these two ground wires to one black and white wire and they ran it across and it looks like they bolted it to the chassis right there see if i could focus in right there they bolted it down there so um i could probably just cut this off because that's not how this one that we got is it actually has some terminals that i believe bolt to the back side of the head so we'll probably just cut this off other than that it looks like this harness is ready to come out when we remove the header i was able to get to the starter cable down here um i still need to remove it but i did get the uh crankshaft position sensor connector disconnected and everything down there is disconnected so let me take off the terminal for the starter motor down there and then we'll get this wiring harness out oh all right guys so finally we have the wiring harness out i've got them both laid on the ground here side by side and uh the old one that i just pulled out of the vehicle is up here at the top of the screen and the new one or the used one that we purchased is down here at the bottom now there's still a few things that i need to do before i can install this harness uh switch some connectors over and mainly repair this harness over here because if you remember uh near the computer this leg of the harness here that goes to the other module that's attached to the computer bracket is missing on this one on this one that we purchased they uh completely chopped it off and i don't know there's probably maybe ten wires there that need to be spliced and uh reconnected so i'm gonna have to transfer uh this piece of the harness over to that one and there's a few other connectors that we need to do uh but yeah there we go anyways guys i'm gonna go ahead and end off today's video here it's been a long day i'm ready to go home we got the wiring harness out of the vehicle so in the next video we're going to be reinstalling it and also probably doing the clutch pedal as well now it's important to note that we're not really sure if this is going to fix the no start condition replacing the harness was just step one so once we get the harness replaced then we can see if the vehicle starts if it doesn't then we still have to go through another diagnostic procedure to figure out uh why it doesn't start so make sure you guys keep an eye out for that video like i always say thank you guys for watching i hope you found this video useful i hope you found it informational educational entertaining if you did make sure to give it a thumbs up if you haven't done so already please subscribe to the channel make sure you hit that notification bell and i'll see you guys in the next one [Music]

Channel: ADVANCED LEVEL AUTO

Views: 6,453

Rating: 4.9827585 out of 5

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Id: uPJvmbZ7THA

Length: 29min 59sec (1799 seconds)

Published: Wed Nov 25 2020