Question about 1994 Oldsmobile Cutlass Supreme

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Coolant line there is an metal line that runs under the intake to the water pump and i cant fine were to get it or anythingwas wondering were to go or some help

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This is probably going to be a salvage yard only. check some out in the country they tend to keep cars around longer. only other idea is a machine shop that could fabricate one from having your to model after. good luck

Posted on May 14, 2010


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1998f1504.6wtriton runs fine but getting codes 401,171and174check all vacum lines,dpfe sensor,sprayed carb cleaner everywhere,new egr ,egr tube,took off elbow and throttle body cleaned it up no blockage...

Some of these intakes have a channel under the throttle body that supplies flow to the EGR. The channel is below the mounting plate for the air horn. Also clear the computer of old Codes.

Code 171 and 174 mean lean condition. It means more air is getting into fuel mix than is metered through air intake. Try using water spray bottle on all seams and Vacuum lines while engine runs and opening will draw in water and affect RPM.

Use water spray on Brake booster while engine runs. Bad diaphragm will leak Vacuum.

Finally, rear metal tube to DPFE has 2 short Vacuum lines which DPFE fits on. The metal tube goes to Exhaust. Some have a metal ridge on this tube. The ridge can leak Exhaust flow and affect the DPFE readings. Sometimes rust can build in this tube and it may need to be cleaned to restore flow.

Sep 28, 2013 | 1998 Ford Explorer

1 Answer

Water leak by the front of the transmision

I had the same symptom and it turned out to be the small metal tube ($5 part) off the back of the water pump that feeds the coolant line that lays in the valley under the intake plenum. When the valley fills with coolant/water it spills off the back of the motor down the front of the trans. To fix the problem you need to remove the entire intake, fuel rails and plenum (took me 2 days to R&R plus acquire the parts) to get to the problem. I suggest you replace the water pump at the same time while you're in there. Not a hard job just lots of bending over wrenching. The shop wanted $1500, I had $500 into parts including plugs, alternater, water pump, belts, coolant and hoses. Good luck.

Jan 26, 2013 | 2000 Ford Expedition

1 Answer


Hopefully just a water hose or connection leak...some parts of these hoses are now metal, and rust away...these factory metal hoses are dealer, and salvage yard only...Many times you can replace the entire metal line with a rubber long as you can connect to both sides...there is a water hose that runs under the coolant overflow, to the firewall...(many times the culprit)...the water pump on your motor is under a pulley located on the front of your engine...Hope this helps.

May 13, 2011 | Oldsmobile Alero Cars & Trucks

1 Answer

96 ford windstar new engine has 1800 miles on it new water pump and gasket, new oil pump. Coolant is leaking from the bottom and cant really tell?

check the heater core supply/return lines. theres a steel tube which runs under the intake manifold which commonly rusts out.

May 20, 2010 | 1998 Ford Windstar

1 Answer

How to change thermostat on malibu 2001 3.1

Follow the upper radiator hose back to the engine. Your thermostat is under the cover that the hose is attached to.

When you are done, there is a black tube that goes across the engine on the radiator side. It is attached to a metal "tower" that has a small )T think 8mm) bolt on top. While the vehicle is running after you filled it with coolant, open that up until you see coolant or hear a hiss. Let the engine run for a while and keep the reservoir up to the full line. run it until there is a steady stream of coolant coming out. It would be good if you can use a jack to pick up the pass side of the car first, it will be sure you get all the air out, and this is very important on this vehicle.

(I also wonder why you need the thermostat. It is rare that the thermostat's go bad on these, and more often than not it is a water pump. leaking intake gaskets, our an improperly bleed system.)

Hope this helps.

Aug 21, 2009 | 2001 Chevrolet Malibu

2 Answers

1997 Saturn SL2 Coolant Leak

you would have a water pump problem at a guess, does the water come from under the front of the engine?if so that is what it will be

Aug 05, 2009 | 1993 Saturn SL2

1 Answer


Yes, there is a "bypass outlet" coolant hose that connects from the water pump inlet pipe (metal pipe that runs from back of water pump along engine block to lower radiator hose) to the intake manifold.

I am not sure about the "black box" - not enough detail.

Jul 14, 2009 | 1987 Honda Accord

1 Answer

Water on top end of engine below intake cover

This may not help, but my 1990 Ford Bronco has a small coolant line running through the throttle housing,(which I bypassed after the metal pipe broke)- "IF" you have a similar setup, maybe it is cracked on the interior and leaking in that way.

Dec 21, 2008 | 1997 Pontiac Grand Prix

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