Hey guys I have an 84 Trans am and when I was driving down the highway yesterday my choke light came on my voltage gauge is reading 0 my tach doesnt work and my oil pressure gauge temp gauge or fuel gauge isnt working either. I cheked the instrument fuse and it was blown put another one in and it blew right away any ideas on what this could be.

 

I noticed from earlier posts that you are running a carbed motor, do you have any idea what was in it originally, ie TPI, TBI, ...etc. If not, get the vin# and use the decoder on the homepage of Thirdgen.org. I had the same problem with TPI motor, and I may be able to help.

 

Origanaly it was a 305 4 bbl I got the wiring diagrams off of Mitchel on demand today in school and going to have a look at that but whatever your problem was I would like to know, you never know it could help.

 

Well, mine turned out to be the wire to the TCC Lockup. I know this sounds strange, but there is a lot more to that one fuse. IIRC the AIR Diverter Vales, EGR Solenoid, EGR Valve, Tach Wire, Purge Canister, and the TCC Switch are all on that circuit. Hope this helps you out a little bit.

 

Thanks when I figure out the problem I will let ya know.

 

Good Luck, and don't get frustrated, electrical problems are a PITA, but you just have to take it one step at a time.

Jeremy

 

So with help from my buddy we discovered that my problem was being caused by the wiring going to the cowl air solenoid. It is now fixed and working great.

 

That's good, glad to hear you found out what was wrong. Is that cowl aftermarket or factory?

 

The cowl hood is factory.

 

hmmmm, I guess I'll have to remember that if it ever comes up again.