I swapped form TBI to TPI a while back, and want to know where the vacuum line running from the cruise control unit runs to. I think it's the vacuum port next to the FPR vacuum line on the rear pass. side by the dist....is that correct? Also, I think my TBI cable is too long, anyone know for sure if the TPI cables are smaller? thanks.

 

Don't know about your cables but.........
the cc line does indeed hook up to the plenum by the fpr. depending on how much stuff you have and moved over it actually plugs into a 3 way valve that then plugs into the plenum.

 

Thanks for the info....could you answer me one thing? The 3 way valve you mentioned, where do the other 2 lines run from?

 

One line goes to the plenum, one to the cruise, and one goes through the firewall to the HVAC controls.

 

AHH.....HVAC...that would explain why my AC hasn't been blowing out of the front vents....thanks. I took a look, and the only vacuum lines I see running to the firewall are the one for the heater control valve, and EGR....should there be another? I'll take a harder look tomorrow, but that's all I see. Anybody got a chart w/ that kinda stuff?

 

The hvac line is combined with a mess of wires concealed in convoluted tubing between the heater box and coil on the firewall. At least it is on my 92 L98.

 

Hello um i have a problem i have a regular 1990 camaro rs 6 cylinder and the cruise control there is this little nip that is suppose to connect to a line and well a friend told me that it might go connected to this ball that is located in the front driver side of the car behind the bumper he says that its like a conpresing chamber ? any one care to help O.O

 

Should go to a T.
One vac line to above mentioned 3 way valve;
the other line to the vac ball