Question about 1999 Ford Contour

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1999 Ford Contour Vacuum Intake Manifold

There is a vacuum leak and it is making a hissin noise but we can not find the leak??????

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Can you explain it little bit more i might be able to help you

Posted on Sep 11, 2008

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Why does my 2000 Mercury Grand Marquis LS make a whistle noise when started when cold noise goes away when warm noise comes from front of engine

Engine vacuum leak . Videos on youtube showing how to find a vacuum leak . The intake manifold gaskets would be a likely possibility .

Dec 19, 2016 | Mercury Cars & Trucks

1 Answer

My 1998 chevy blazer is stuck in 4wd hi makes clicking noise under clove box

Clove box! How cool, you can bake a ham as you drive. (sorry, couldn't resist). Noise under dash is probably because you have a vacuum leak somewhere and a blend air door is flapping. Part of 4wd system is vacuum operated. There is a vacuum can under the battery (brilliant placement, huh) and the lines to it often fail over time. Use a vacuum gauge and piece of hose, one end in ear, to listen around for a small whistle = leak.

Sep 09, 2014 | 1998 Chevrolet Blazer

1 Answer

I have a1994 olds cutlass supreme just started idling high in park checked throttle cable , hear a hissin noise when i move the pvc hose

the hissing noise is a vacuum leak; remedy it by replacing the hose, or if you can, cut off the cracked part and reattach it.

Mar 09, 2013 | Cars & Trucks

1 Answer

2001 ford taurus,lopes when first started,when cold.

intake manifoold leak check all vacuum lines replace all vacuum lines if look cracked ,spark plugs could be fouled out by leaking fuel injectors, clean fuel injectors,replace fuel filter,replace air filter,replace spark plugs and wires,do tune up see if it helps if not.could have leaking intake manifold gasket or leaking egr valve,use engine vacuum gauge check engine vacuum for intake manifold gasket leaks.

Sep 23, 2012 | Ford Cars & Trucks

1 Answer

Have a vacumm leak on my 2001chrsyler sebring coupe 3.0

I have a similar response, but if you hear a high pitched noise like a whistle it is possibly a Vacuum leak. You may be able to test the different Vacuum solenoids and the EGR with a handheld Vacuum pump. On some cars, the tubing from the exhaust pipes can make a noise on what some call "Backpressure pipes".

There are vacuum lines running under the dash as well. Any open and leaking lines can affect the settings of a running engine.

There are not too many monitoring sensors for Vacuum, so you may not benefit from a scanner.

Jul 16, 2012 | Chrysler Sebring Cars & Trucks

1 Answer

What is a vaccum leak on a 1999 buick regal

All engines have vacuum created in the intake manifold, because the pistons are pulling in air into the cylinders from the intake manifold, resulting in a pressure drop in the intake. A leak is caused when the intake manifold gasket is bad, or when a vacuum hose off the intake becomes disconnected or breaks. The hose will then **** extra air into the intake, causing a higher than normal idle, maybe a rough running condition, and can be identified by a slight whistling noise at the break or at the disconnected end of the vacuum hose.

Feb 20, 2012 | 1999 Buick Century

1 Answer

Brake pedal hard 2 press,can hear a hissin sound.

the hissing sound is most likely the vacuum leaking past the seal in the brake booster & that is why the brake pedal is hard because you don't have any power assistance, the brake booster will have to be replaced.......hope this helps.....cheers.

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2 Answers

The line that connect from the intake to the brake booster

This is a vacuum line. It produces vacuum to the brake booster which in turn makes it easier for you to press the brake pedal to stop.

Feb 09, 2011 | 1998 Ford Contour

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