Skip the auto shop - Our mechanics make house calls

Q: Brake pedal difficult to press - 1993 Oldsmobile 98

asked by on

I have some brake system issues on my car. The problem occurs when I drive and start to brake. The brake pedal seems to be very hard to press and requires a lot of force. During braking, the car would also idle unusually but it gets better as I let go off the brake. How can I fix this?

A: These symptoms are typically caused by a fa...

These symptoms are typically caused by a failing brake power booster unit, likely a vacuum valve in the booster unit. This fault reduces the brake booster effectiveness, requiring more effort to stop the car. It also leaks air to the engine, which is not accounted for by the fuel injection system and making the engine run rough. If you would like to have this looked at, a certified pro from YourMechanic can come to your car's location to inspect the brake system in order to have this correctly resolved.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: after 10mins of driving car shuts off,starts dieseling on battery power only. battery good an alternator is good.

One of your wires may be shorting out your alternator, check to see if there are corroded wires on your wiring harness. Also, as I've seen in the past there may be a problem with wires on your starter. Also,...

Q: Hazard lights don't work

Hello there, thank you for asking about your 1990 Oldsmobile Cutlass Calais. There can be an issue with the switch itself or the hazard flasher assembly. The flasher is the device that makes the lights blink and a failure here...

Q: Loud idling, clunking, vibrating when stopping, sluggish engine

It sounds like you may have a faulty engine or transmission mount. These mounts are what secures the engine or transmission to the frame of the vehicle. These mounts are made of metal frames with large solid pieces of rubber...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.