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The system becomes contaminated
Arianna Blick
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What causes the car to noticiably idle higher sometimes when you stop?
The vacuum brake booster is connected to the engine through a large vacuum hose directly to the intake manifold. The power brake assist is dependent on the engine vacuum to operate, and allows air into the intake manifold whenever you press on the brakes. A certain amount of increase in engine idle speed is natural when you press the brakes, however, if there is too much idle increase, you may want to have the vacuum booster tested for leaks. The power brake system can still work while there are relatively small leaks in the booster, but if there are leaks now, they will only get worse and can potentially cause problems with the power brake system. That may not be your problem, but it would be a good idea to have it checked.
Why does your heater only blow hot hair when the car is moving Honda Civic?
not developing enough vacuum while driving to keep the blend door open check your vacuum lines for leaks
Air conditioner switches to defrost while driving?
Check the following items......... 1. Vacuum leak/leaks. 2. Switch. 3. Controller.
I have a 2000 Ford Explorer. When i start it in the morning it shakes for 10-20 seconds and will stop after i have it in drive for a while. What would cause this?
Your are problem having a fuel or vacuum problem. It could possibly be a clogged fuel filter slowing fuel to the motor but it is very common for fords to have vacuum leaks. Check all vacuum hoses or leaks. It is also very common for the intake gaskets to leak(although more common on for trucks). Any trouble codes? Possibly system lean on bank one or two?
Where to look for vacuum leak in 1998 hyndai elantra?
basically vacuum leaks are nightmares and should be treated as early as possible. vaccum leak/s may led to excessive fuel consumption and degretion to brake effectivity/efficiency....Usually vacuum leaks are source from frayed or cracked vacuum lines or hoses, some hose/s leaks due to the phenomena being aged or brittle due to heat..by using a vacuum gauge, the degree of leakage may be determined if it is at large or minimal.......from my expirience i FOUND MY VACUUM LEAK BETWEEN THE TB (THROTTLE BODY) AND THE a/c accumulator tank in the engine bay... while others may be seen on the top side...hope this helps
What would happen if a leaking gage manifold were used while trying to evacuate a system to a deep vacuum?
The system becomes contaminated
What is a vacuum resrvoir on a 1996 S-10 for?
To operate the HVAC (heating, ventilation and air conditioning) system while the engine is under load and not producing vacuum.
What could cause a dual fuel system to idle slow and die when running on LPG?
Could it be not enough pressure? Is the engine in good condition? If not, repair it. Tight valve clearences will cause this so make sure you check them. Check & elliminate vacuum leaks and ensure no air leaks in the induction system. Check & adjust idle speed & ignition timing on petrol to correct setting. Check idle speed on gas, should be similar, within 100 rpm. If not, check idle mixture setting on gas, use vacuum gauge to obtain highest reading while adjusting mixture setting.
What causes a 2000 Ford Focus to stall at idle while in drive and misfire Have replaced O sensor and checked for vacuum leaks?
most 2000 model year focus have a fuel delivery module recall.
How do you find vacuum leaks on 93 s10 blazer?
Visually inspect each vacuum line looking for problems such as being disconnected, cracked, rotted or pinched. If the lines appear to be okay you can run the engine while spraying carb cleaner around problem areas such as at the base of the throttle body and intake manifold area. If while spraying you hear the engine idle change rpms, you have just located a vacuum leak. The gasket between the throttle body and intake manifold were known to blow out and cause a large vacuum leak.
You can't get your fan to quit blowing through the defroster in my 2002 Ranger it won't blow through the dash vents or the floorboard vents Does it work off vacuum or electrical system?
The system works off of vacuum. A line from the engine vacuum manifold runs to a 3 inch ball shaped reservoir (mounted to right front wheel well), then another line to the Heating-Ventilation-AC system. If air will only blow out the defrost vent, then there is likely a vacuum system problem. Remove the engine vacuum source line from the ball shaped reservoir and confirm that the there is vacuum while the engine is running. Then remove the HVAC line from the reservoir and connect it directly to the engine line. If this works while the engine is running, then you have a cracked or leaking reservoir.
Why does your 1989 Chevy S-10 Blazer idle high?
A vacuum leak can do that. Check the gasket at the base of the throttle body for leaks. It was common for that gasket to crack and allow a vacuum leak. With the engine running, spray carb cleaner around the base of the throttle body. If the idle changes briefly while you are spraying that area you have found the leak.
