Author Topic: 1994 Buick Century and wiring/vacuum  (Read 5102 times)

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1994 Buick Century and wiring/vacuum
on: April 03, 2010, 08:53:05 PM
I installed new intake manifold gaskets on a '94 Buick Century (3.1L V6) and have a few issues with the re-assembly:
1) there a 3 wire connector next to the throttle body that I can't find a receptical for. It has 2 black wires and a pink wire. It's right next to the throttle body, and looks like it was plugged in to something before the disassembly.  It also has a pink gasket/seal on it (the plugs seem to have color-coded seals).

2) The vacuum hoses on the plenum have me confused. Is the hose going rearward from the top of the plemum (connected to the PCR valve) supposed to connect to the fuel emission
canister? There also appears to hose that is supposed to connect to a module behind/below the ignition coil pack.

I should have taken pictures but got rushed.
Thanks.
KTV

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discretesignals

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Re: 1994 Buick Century and wiring/vacuum
Reply #1 on: April 05, 2010, 05:37:06 PM
1) You sure it is 2 black wires with the pink wire?  Can you take a picture of it and post it on here?

2) The hose from the canister goes to the EVAP purge valve which is located behind the bracket for the ignition coils.  There is another hose from the EVAP purge valve to the manifold.  The vacuum line that connects to the fuel pressure regulator is shared by the MAP sensor.  


« Last Edit: December 31, 1969, 06:00:00 PM by discretesignals »

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