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The way I do this is old school.
Examine all vacum lines, conections, Ts lines and accessories.
Start car and listen, sit in drivers seat with door closed and listen with stereo and heater off, turn heat on fan on lowest setting, change to all heat cool and defrost, foot and AC outlet settings.
If by now you have not heard a hiss from a leak then the next step must be performed outdoors on a fairly wind calm day. Take a propane plumbers torch. Turn it on so it leaks propane with out lighting it. Move slowly past intake gaskets, vacume lines and accessories. The engine note will change for a split second.
Good Luck
What else can I help you with?
Locating vacuum leak in a 2001 santa fe?
I need to locate a vacuum leak in a 2001 santa fe, can you help?
What does it cost to repair a vacuum leak on a 2001 deville?
What does it cost to repair a vaccum leak on a 2001 deville
How do you find a vacuum leak on a 94 Saturn?
Use carb cleaner or brake cleaner.
1999 Saturn sL1 idles high?
throttle posistion sensor or vacuum leak
Why does your 97 Saturn SC2 start rough run fine then stall when you put it in gear?
vacuum leak,map sensor
What makes a Saturn car idle at 1200 instead of 800 as it should be?
Most likely a vacuum leak. Check vacuum lines, throttle body and EGR valve. Also the #1 reason is the intake manifold gasket leak. It needs to be replaced.
Why does the heater in a dodge ram 1500 blow cold air when truck is stopped?
You have a vacuum leak somewhere. Trace the main vacuum hose fom the air intake until you find a crack in the hose.
Where could a vacuum leak be on a Saturn 2003 L200?
As with any internal combustion engine, the vacuum leak can be anywhere on the intake side, including intake manifold gasket, cracked intake manifold, EGR valve, throttle body gasket and even the vacuum operated devices can contribute to leaking, such as the vacuum assisted brakes or vacuum operated vent system. Starting fluid can often be helpful when searching for a vacuum leak; search the likely places, listening for the the typical hissing sound. Once you find a place that you suspect of the leak, spray a little of the starting fluid. When the starting fluid hits a vacuum leak the engine RPM's change slightly. Good luck.
What does the code P2173 on a 2005 dodge durango 5.7L mean?
P2173 High AirFlow/ Vacuum Leak Detected (Slow Accumulation).You have a vacuum leak in the intake manifold.P2173 High AirFlow/ Vacuum Leak Detected (Slow Accumulation).You have a vacuum leak in the intake manifold.
Why is it when you crank up a 1996 Saturn it idles to high in park?
sounds like a bad iac motor(idle air control) or vacuum leak
Intermittent loss of brakes in 2002 Saturn L Series?
Check the master cylinder. Occasionally the internal seals wear and intermittently leak. It could also be an indication of a vacuum leak or possibly low engine vacuum. Either way, you'll need to check into it a litle more.
How can check that vacuum system is healthy or not?
YOU can get a shop manual find the diagram and trace your vacuum lines accordingly. make sure no lines are loose or cracked. if it is cold of morning, you may hear a leak. it is a high pitch whistle or whine. some old timers use starting fluid or wd40 and spray around suspected leak areas. if the engine speeds up after spraying a burst, it indicates a vacuum leak.
