Arrowstorm

I found this vacuum diagram on the internet explaining the general routing of the emissions control systems.

My 307 has been running rough and I've been thinking about redoing the vacuum lines, as a couple years ago, I kind of "got rid of" some of that stuff.

What I was wondering was, what are all those things? EAS? EAC? VDV?!

And where do I find whatever those are?

Any help would be appreciated.

Thanks,
Buz

Note: Wrong picture uploaded anyway. Lol. Uploaded correct pic with notes on follow up response.

Arrowstorm

This is what I have found from MANY MANY MANY sources around the internet.

And as far as finding where to get the parts?.... That's another story.

Hope this helps, or if anyone would like to make corrections, please let me know.

Thanks,
Buz

joe_padavano

Here's a thought - buy a correct Chassis Service Manual for your car and all these things will be defined with function and testing procedures. I'll also point out that if you don't follow the CCC adjustment procedure in the CSM exactly, the 307 will never run right.

In many cases, you can't. These parts have been unavailable for over a decade and are rarely replaced. I've got some from a parts car if you need them. RockAuto does have some items, like the solenoid assembly. I just had to get one for my wife's 1985 D88. It was not inexpensive...

Arrowstorm

What is CCC?

Oh man, didn't realize Rock auto had so much stuff I've not been able to find. Thanks!

joe_padavano

You REALLY need to get a Chassis Service Manual...

CCC is the Computer Command Control system on your 307.

Arrowstorm

Yes, I have had the Haynes for this car for as long as I've had the car; 11 years, but I find that it doesn't tell me all that much.

I've been doing more and more mechanical work on my 2 classics and I have the service manual for the Vista, and you're right, I will get the manual for the Custom Cruiser.

Do CCC's go bad often? I'm wondering if there are any ways to check it. The reason for all of this is that it's been idling rough. ={ I know there are tons of things that could be going bad.

Arrowstorm

Woot! Just bought a service manual on ebay for $10 free shipping!

Definitely gonna check that out.

joe_padavano

Haynes/Chilton/Motors manuals are good for lining the birdcage. They suck for learning how to properly repair these cars.

Do CCC's go bad often? I'm wondering if there are any ways to check it. The reason for all of this is that it's been idling rough. ={ I know there are tons of things that could be going bad.

The CCC system uses many sensors and miles of vacuum tubing, which do go bad over time. The computer itself is much less likely to fail.

Arrowstorm

That's definitely good to know and definitely what I'll be replacing very soon; hence the diagram questions. Lol

Thanks!

Buz

rustyroger

Where did you find it Buz?.
I want schematic diagrams for a couple of 400ci Pontiacs. I will have to fabricate my own lines, no nipping down to NAPA for me!.


Roger.

MDchanic

Most of the vacuum diagrams that look like that came out of one of the old Motor manuals (or something similar).
Many are posted on the AutoZone web site, but you need to go in through Google to find them.

http://www.autozone.com/repairinfo/r...00c15280080fb7

http://www.autozone.com/repairinfo/r...00c1528004d60c

- Eric

Arrowstorm

Yeah, surprisingly, the Autozone site was a big help.

But also through google search.

rustyroger

Just what I was looking for!.


Thanks again, Eric.


Roger.

MDchanic

Any time...