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The Honda CRX, as in many vehicles has the power brake booster relying on engine vacuum. A vacuum system problem, or with the booster can cause series changes in idle and drivability. Brakes are a critical safety component so this situation must be checked by qualified mechanic promptly.
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∙ 9y ago
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How do abs affect engine iddle?
ABS brakes should have no effect on engine idle, but a bad power brake vacuum booster would have an effect on engine idle.
95 sunbird makes a wooshing sound when brake is applied there is no brake and the master cylinder holds fluid?
I'm just guessing here, but perhaps the brake booster is leaking. It uses engine vacuum to provide braking assistance. It's the large canister thing, usually on the firewall, behind the master cylinder. If it is indeed your brake booster leaking vacuum, you may also notice a change in your idle speed or may experience rough idle. Your engine's computer adjusts your engine's idle according to vacuum. If vacuum is lost anywhere on your engine, the computer may adjust idle inacurately. Whooshing brake sound + changed idle may be diagnostic of a leaking brake booster, although idle won't always change.
Will the truck run bad if brake booster and master cylinder are going bad?
Yes. The engine will idle poorly when a vacuum power brake booster goes bad. It can be a source of a large vacuum leak. A bad master cylinder however would have no effect on the performance of the engine.
Whats the cause of heavy engine vibrations at idle or when the brake was fully depressed and Rpm fluctuates between 400 to 600 mark at Idle and engine will cease when it dropped below 400 rpm?
Check for vacuum leaks, starting with the power brake booster.
How can you tell if a throttle position sensor goes bad on a 1988 Chevy 2.8 engine?
loping idle. does not maintain idle, sometimes shuts engine off. do an ohm test.
Why is there a rough idle with brake depressed and in gear at a stop on a 92 Dodge Colt 100E with a 1.5 L Mitsubishi engine?
the Vaccume Brake Booster is bad.
Why goes Idle up n down when i start the engine Engine cant hold idle 1990 Dodge Dakota 39 MT V6 TBI OHV PLEASE let me know. o?
Your idle air sensor is bad.
A power brake booster has a vacuum leak All of the following conditions could exist EXCEPT?
Rough engine idle
Why does the heater go cold when engine at idle but goes warm when engine revs up on my dawoo matiz 0.8cc?
add coolant.
Why the engine's idle goes high and low?
why does my 4.75 BRIGGS & STRATTON lawnmower engine idles high and low when cutting my grass
On a 1994 Buick Lasabre Why does the engine continue to rev up while driving even when brake is applied?
On a 1994 Buick LaSabre why does the engine continue to rev up while driving even when the brake is applied ? or when driving why doesn't the engine return to idle when the brake is applied? I would check for a vacuum leak
How can you tell if your brake booster is faulty?
The basic test is this: Sit in the driver's seat with the engine not running. Depress the brake pedal and release several times. You should notice increased resistance each time, until the pedal feels very firm. Keep foot pressure on the brake pedal, and start the engine. The pedal should sink slowly. If it does not, you have a faulty power brake booster. Also check for vacuum leaks, clogged filter (if equipped), or bad check valve between the engine and the booster. Also if you hear the engine idle speed change when you apply the brake at an idle, the booster is bad.
