84 no start, starter relay interupt location??please help find
Thread Starter
Instructor
Joined: Jun 2006
Posts: 100
Likes: 0
From: Houston Texas
84 no start, starter relay interupt location??please help find
I cant find it. Horn does not work, started it once, now nothing happens at all.starter, fuel pump fine, car sat a long time due to this issue, got it free.
see in Chilton there is a relay and theft module, but though vats was later in gm life?
can someone tell me how to get to the relay or a way to by pass it?
I would appreciate any good description/pics, instructions. Send you a diagnosis fee via paypal!!!!
see in Chilton there is a relay and theft module, but though vats was later in gm life?
can someone tell me how to get to the relay or a way to by pass it?
I would appreciate any good description/pics, instructions. Send you a diagnosis fee via paypal!!!!
Intermediate
Joined: Aug 2009
Posts: 36
Likes: 0
From: Houma LA
From what I have read, I believe that there is a fuse behind the info center that will disable the security system. I've never had the issue so I can't tell you first hand. There is info about this issue here, just gotta use the search.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Is there power to the small purple wire on the starter when the key is in the "Start" position? VATS reads the resistance of a pellet embedded in the key to prevent the wrong key from starting the car. 1984 IS pre-VATS, but there is still a theft deterrent system on the car. Somewhere on this new computer, they should have transferred my links and files to the starter wiring schematic for the 1984. If you don't have access to a FSM, you should buy one if you plan to keep the car and continue working on it.
I have a .pdf copy of the starter wiring schematic, but I don't know how to post it here.
RACE ON!!!
I have a .pdf copy of the starter wiring schematic, but I don't know how to post it here.
RACE ON!!!
Advanced
Joined: Jul 2009
Posts: 57
Likes: 0
Hey juniorbat,
I picked up my 86 pretty cheap for the same reason, sat for quite awhile. At first i was having power issues, would'nt start, then it would, etc. I saved myself ALOT of time by going over the basics TWICE. I found that the brand new battery i put in was not grounded to the chassis properly, There was some sort of self tap screw, that had rotted. Bad connection. Also, The cable coming off the positive batt. terminal was cut, and TAPED together. The first time around, i had taken for granted, that because it "disappeared" down into the engine compartment, and was tightly connected to the brand new starter, that it was intact. Forgive me if my suggestions are a little low brow, but i'm assuming you are, like myself, an amature motorhead. If you're past all this, forgive me, but, i suggest you attack that thing one more time with a wire brush, and multi-meter, who knows, you might get lucky. Hope this helps.
Mike
I picked up my 86 pretty cheap for the same reason, sat for quite awhile. At first i was having power issues, would'nt start, then it would, etc. I saved myself ALOT of time by going over the basics TWICE. I found that the brand new battery i put in was not grounded to the chassis properly, There was some sort of self tap screw, that had rotted. Bad connection. Also, The cable coming off the positive batt. terminal was cut, and TAPED together. The first time around, i had taken for granted, that because it "disappeared" down into the engine compartment, and was tightly connected to the brand new starter, that it was intact. Forgive me if my suggestions are a little low brow, but i'm assuming you are, like myself, an amature motorhead. If you're past all this, forgive me, but, i suggest you attack that thing one more time with a wire brush, and multi-meter, who knows, you might get lucky. Hope this helps.
Mike
Thread Starter
Instructor
Joined: Jun 2006
Posts: 100
Likes: 0
From: Houston Texas
Mike, not an insult, even motorheads sometimes forget basics, I have before and ran my resto shop for 12 years, but only did 55-74ish stuff. I never liked 75-82 stuff, and never ever wanted to mess on cars that had electronics controlling the motor and tranny. So this is new to me, I have a 2002 Ws6 that I studied specifically under a gm tech to repair so I would not be raped, but I just dont own or work on electronics alot.
I know my grounds are good, replaced them ALL. I know neutral safety is good, column and ignition switch good. No horn, security light, and all happening after getting it started then shutting off and shutting door, keep coming up on searches as a security issue.
Plus it sat and given away for the reason, so its a "default" in the car that apparently is a mass issue, so I am still leaning to the security feature.
I do get power to purple wire though with key in start which I cant understand, because I assume, if the security was killing it, I wouldnt? Kinda wishing I had said no, its b ugging the hell out of me, and already had two previous c4 owners come try to help.
I know my grounds are good, replaced them ALL. I know neutral safety is good, column and ignition switch good. No horn, security light, and all happening after getting it started then shutting off and shutting door, keep coming up on searches as a security issue.
Plus it sat and given away for the reason, so its a "default" in the car that apparently is a mass issue, so I am still leaning to the security feature.
I do get power to purple wire though with key in start which I cant understand, because I assume, if the security was killing it, I wouldnt? Kinda wishing I had said no, its b ugging the hell out of me, and already had two previous c4 owners come try to help.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
)
Thread Starter
Instructor
Joined: Jun 2006
Posts: 100
Likes: 0
From: Houston Texas
Oh, got it running, or somewhat, fuel pump barely buzzing , have not tested the pressure, but sure its not up to par, and going to find the regulator, assume they had one, and see if its leaking all over the palce. I got a chiltons but it wasnt very helpful on the location of the theft stuff.
The removing the fuse fixed it , so thanks for the tip.
The removing the fuse fixed it , so thanks for the tip.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Fuel pressure regulator in located at the front of the rear throttle body. Remove the tower for the injector and its underneath that. Fuel pressure should be between 9-13 psi.
The chilton book to me is pretty much worthless. If you can get the helms FSM that would be the way to go.
The chilton book to me is pretty much worthless. If you can get the helms FSM that would be the way to go.
