Question about 1989 Cadillac Brougham

1 Answer

NEED FULL EMISSIONS VACUUM HOSE DIAGRAM- FRONT TO BACK! PLEASE!

I DESPERATELY NEED the FULL EMISSIONS VACUUM
HOSE DIAGRAM- FROM THE FRONT TO THE BACK (THE
ENTIRE ONE! PLEASE, I DON'T CARE IF IT'S HAND
DRAWN!) FOR A 1989 CADILLAC BROUGHMAN 350 5.7

I HAVE:
*4 PORTS ON FRONT OF THE CARBURETOR AND 1
PORT ON THE BACK OF IT
*1 PORT ON BACK LEFT OF THE MANIFOLD
*3 PORTS ON EGR SOLENOID- 2 ON ONE SIDE AND 1
ON THE OPPOSITE SIDE
*1 PORT ON THE EGR VALVE
*1 PORT ON THE TEMP SENSOR WHICH GOES TO THE
VAC MOTOR ON THE AIR FILTER HOUSING
(THE 2ND PORT ON RIGHT SIDE ON FRONT OF
CARBURETOR GOES TO THE PCV VALVE- IT HAS
NEVER BEEN MOVED SO I AM ASSUMING THAT THIS
ONE IS RIGHT...)
*MAP SENSOR ON FIREWALL HAS 1 PORT
*3 HOSES COMING FROM THE GAS TANK UP TO THE
MOTOR- NOT SURE WHERE THEY GO
*2 PORTS ON PURGE CONTROL SOLENOID ON TOP OF
CHARCOAL CANISTER
*AND... THERE IS THIS LITTLE EGG SHAPED CANISTER
UNDER THE CHARCOAL CANISTER THAT HAS 1 PORT
GOING INTO IT- (WHAT IS THIS EGG SHAPED THING
CALLED?)

THANK YOU SO MUCH FOR YOUR HELP...

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  • 1,952 Answers

Cadillac: 1989 Cad replacing leaking fluid cylinder, rear drum brakes, hand vacuum pump
reardrum brakes, hand vacuum pump, fluid cylinder: Well first off buy thenew cylinder, usually around 20 bucks or so. You MAY be able to get thecylinder out without removing the brake shoes but it depends on how thesystem works. You could try compressing both sides of the cylinder andpull it out once...

Hi T, Without access to a scan tool to see what the sensors are tellingthe computor it would be tough to point to any one thing. However ifyou haven't replaced the oxygen sensor that is a possability. Also onhigher mileage vehicles the fuel pressure regulator tends to develope ahole in the diaphram and allow fuel to go into the engine via thevacuum hose. If you run the engine and then shut it off it would besafe to remove the vacuum hose and see if any fuel is present. Youcould also turn the key so the dash lights up and that will pressureizethe fuel system and then you might see fuel. As a last test run theengine with the hose off and see if gas dribbles out.

Those 2 things can cause the engine to run rough and allowblack smoke out the tailpipe. As a last suggestion, take the car toyour mechanic for a diagnostic and see what they come up with. Then youcan deside if you are up to replaceing that part or just let the techdo it.

www.carmanuals.com/aftermarket.htm - 304k

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Posted on May 25, 2009

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