[johndfw]

My new 87 brougham (307) , had some engine work done before I bought it. It runs pretty good. However there were all kinds of vacuum and emissions hoses left undone, and wiring. I spent the day checking and replacing vacuum lines, and hooking up elc. connections. Wow what a mess. I was left with two electrical connectors unknown, and a few unsure vacuum connections.

Does anyone have any ideas of where I can get better info on connectors and vacuum lines other than Haynes and the sticker under the hood?


Thanks

 

[Buzzbomb]

get a factory repair manual on ebay they are great

 

[johndfw]

Buzzbomb...........Good Idea........Do they help I.D. some of the thermal vacuum switches ect........?

Thanks

 

[FrankieSixxxgun]

Everytime I pop the hood on my '87 it scares me. What was GM thinking with that vacuum setup?

 

[johndfw]

Frankie

No kidding!

 

[N0DIH]

You know, the odd thing is, I got used to it and I didn't think it was too bad!

Once you learn what is what, it is actually quite simple and you won't think much of it....

(Maybe I am just whacked too....)

 

[It's Just Eric]

I know exactly what you mean by the vacume Jungle. I had my fair share of problems with the system. One was inherited with the car. Now, the 307 is underpowered enough..but mine was running on 7 cylinders as it turns out. There was a vacume leak somewhere that threw the vacume advanced timing out of whack. luckily my friendly mechanic figured iy out during a simple check up. Another one , which haunts me to this day, was when i was re-sealing my valve covers. I probly went about it the wrong way. Didnt have a manual, but I figured if I jsut labled every connection it would turn out okay. I still had a few lose ends when I was done, including a mystery wire plug which to this day seems to have no home. lol, moral of the story. Get a manual like the other suggested, and good luck.

 

[johndfw]

Hey Eric
I had an 84 olds 88. It had the same engine, and a loose elc. connector. It turns out that it was some sort of factory check lead. I worried about it for about a year before I found out what it was, from a mechanic friend.
I have a Haynes manual, but its not very good like most of their stuff.

 

[N0DIH]

The green connector on the intake there is for M/C solenoid checking. Connect a dwell meter up to it on the 6 cyl scale and you can read M/C solenoid duty cycle.

 

[johndfw]

thanks for the info NODIH.

 

[FrankieSixxxgun]

I thought mine was a loose connector too until I did a little googling. Too bad I can't find the correct adjustment procedure for my carburetor anywhere though.

 

[guidematic]

I'l second the factory manual. Those Haynes or Chilton manuals are only good for lining the bird cage.

They will outline all the hoses and how the systems function.

I have also found that these hoses have a habit of deteriorating. They have to be checked peridically for splits and such. A few bad hoses can cause all sorts of problems. The worst one is the main vacuum line at the rt rr of the engine. When this one breaks, it causes an engine miss and a failure of all the systems it feeds.

Mike