New 72 owner needs some info
Thread Starter
Racer
Joined: Oct 2001
Posts: 420
Likes: 11
From: tuttle ok
New 72 owner needs some info
I need the emissions diagrams for a 72 200 horse auto car with a/c. I bought a 72 vert last weekend and I am now in the fix things right mode. Pretty nice car but I should have looked at the car harder than I did when I made the offer.
Burning Brakes
Joined: Jul 2006
Posts: 1,047
Likes: 12
From: SoCal
If you don't already have it, get the NCRS AIM and, while you're at it, get the electrical diagrams too for your '72. It will be money well spent.
And the '72 doesn't really have much in the way of emissions control (TCS solenoid, AIR pump, PCV, coupla' other minor bits and pieces)...
And the '72 doesn't really have much in the way of emissions control (TCS solenoid, AIR pump, PCV, coupla' other minor bits and pieces)...
Last edited by VCuomo; Jan 18, 2011 at 09:56 PM.
Team Owner
Joined: Sep 2006
Posts: 31,134
Likes: 4,206
From: Westminster Maryland
Hi jm,
72 NICE!
The 72 base engine cars didn't have any of the AIR equipment that some of the other engines had unless it was a car delivered to California.
All 72 cars have an ECS (Evaporative Control System) which controls gas tank vapors, a PVC (Positive Crankcase Ventilation) which controls crankcase vapors, TCS (Transmission Controlled Spark) system, and an Anti-diesel Solenoid.
I hope this is enough info to get you started.
Regards,
Alan
PS: The 72 AIM (Assembly Instruction Manual) from G.M. (not the NCRS), and the G.M. 72 CHASSIS SERVICE MANUAL will both be a BIG help to you as you get to know your car. Both these are available from many of the larger venders and are well worth their cost.
72 NICE!
The 72 base engine cars didn't have any of the AIR equipment that some of the other engines had unless it was a car delivered to California.
All 72 cars have an ECS (Evaporative Control System) which controls gas tank vapors, a PVC (Positive Crankcase Ventilation) which controls crankcase vapors, TCS (Transmission Controlled Spark) system, and an Anti-diesel Solenoid.
I hope this is enough info to get you started.
Regards,
Alan
PS: The 72 AIM (Assembly Instruction Manual) from G.M. (not the NCRS), and the G.M. 72 CHASSIS SERVICE MANUAL will both be a BIG help to you as you get to know your car. Both these are available from many of the larger venders and are well worth their cost.
Last edited by Alan 71; Jan 19, 2011 at 04:53 PM.
Thread Starter
Racer
Joined: Oct 2001
Posts: 420
Likes: 11
From: tuttle ok
thanks gents. I will purchase the assembly manual. It appears that the tcs has been disabled. What I am looking for is the lines from the evaporator canister to the pcv and the carb. The car I have has been changed up and I would like to get it back to original. Thanks again.
Team Owner
Joined: Sep 2006
Posts: 31,134
Likes: 4,206
From: Westminster Maryland
Hi jm,
Here are some pictures of the connections at the canister and the hose connections at my 71 q-jet which should be the same as your 72 q-jet.
I hope they help.
Regards,
Alan
TOP (1 from tank, 2 to carb)(1 directly to carb, and 1 to PVC and then to carb.)
BOTTOM (drain hose)
Here are some pictures of the connections at the canister and the hose connections at my 71 q-jet which should be the same as your 72 q-jet.
I hope they help.
Regards,
Alan
TOP (1 from tank, 2 to carb)(1 directly to carb, and 1 to PVC and then to carb.)
BOTTOM (drain hose)
Melting Slicks
Joined: Mar 2008
Posts: 2,023
Likes: 6
From: Austin Tx
Alans pictures show perfectly how to hook up the lines to the vapor canister, as they are the same 71->72.
But don't get confused by the solenoid on the carb, that is an excellent example of the one year only CEC (Combined Emission Control) solenoid. It combines the TCS solenoid, that controls vacuum advance, with the idle stop solenoid on the carb. So your 72 will have a TCS solenoid on the rear passenger side of the carb. And a idle stop solenoid with a single electrical connection on the drivers side of the carb.
But don't get confused by the solenoid on the carb, that is an excellent example of the one year only CEC (Combined Emission Control) solenoid. It combines the TCS solenoid, that controls vacuum advance, with the idle stop solenoid on the carb. So your 72 will have a TCS solenoid on the rear passenger side of the carb. And a idle stop solenoid with a single electrical connection on the drivers side of the carb.
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