Q: "Undiagnosed" rough driving, seemingly without cause, most noticeable around 70mph, inconsistent brake pedal resistance

asked by

JORDAN R

on December 20, 2017

Rough driving started starting approximately 4 months ago has not changed in intensity. Is most noticeable around 30mph. Steering is loose or spongy especially when above 60 miles an hour or after extended driving often accompanied by inconsistent brakeing. Meaning the brake pedal is low sometimes and can feel higher other times as well as seems to slip or not work properly. No complete failure. Nose diving started approximately 2 weeks ago, consistently feels as though air needs to be added to the tires. Sluggish at acceleration especially but not specifically uphill. Have taken to dealership 2 times, visual brake inspection and ride along showed no results, left tire wear worse (minimaly) than others. Does not pull to a side. Was aligned 3 months ago with no difference

My car has 44682 miles.
My car has an automatic transmission.

Save Big on Auto Repairs

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

Experienced Mechanic?

Earn up to $70/hr

Apply Now

What others are asking

When the ignition switch is left on ACC for a while, the car won't start

This is not an uncommon issue. Listening to the radio for 25 minutes with the car off is not a problem normally. But in this case, the most likely cause of this is either the ignition switch or the battery...

Ignition starts car, but engine won't catch

Hello! I believe the problem will be within your ignition key lock cylinder (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-lock-cylinder). There is a passlock sensor in the ignition key lock cylinder. This sensor is known to become bad overtime. Replacing the ignition key lock cylinder will...

Both battery terminals get hot while engine is running on a zx3 dohc zetec 16 valve

Hi, thanks for writing in. I'd be happy to help. Based on your details, I feel that this could be from a bad cable end or connection to the battery or a shorted battery (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-battery). I would recommend having an...

I was told to change my valve gasket and valve cover. Should I?

Hi, thanks for writing in. Five years is a bit on the early side to have a leaking valve cover gasket. The labor time is 3 hours to replace that gasket and YourMechanic typically charges around $400 (part and labor)...

Car is running fine (somewhat) but have P0345 code (cam shaft position sensor).

The most common cause of this code is going to be the timing chain and timing gear phasers along with cam solenoids can all cause the problem of cam misalignment. The problem can cause low power, rattles and check engine...

My RPM's on my car keep revving up, but won't go past 2,000

Hi there. A rough idling engine can be caused by a number of issues, some of them are serious while others tend to be minor, but the symptoms remain pretty much the same. The car will feel rough and bouncy...

Engine is making loud knocking sound. Is it the rod bearings?

Before you condemn the motor for having rod or crankshaft knock you should have the crankshaft harmonic balancer checked for a broken one. If it is bad then it can cause a loud knocking noise. Replace it if it is...

P0446

Hi There, These codes all relate to a leak in the Evaporative Emissions system (EVAP system). Your car has a small purge valve with a purge solenoid (https://www.yourmechanic.com/services/evaporation-vent-solenoid-replacement) in the Evaporative Emissions system that controls the venting of fumes from...

After putting gas my engine is having a weird tapping / knock like sound ?

There is a possibility that the gas is contaminated although of course the issue (the noise and the underlying mechanical cause) could have just coincidentally arose right at the time you bought gas. You might check with the station and...

The Best Used Cars to Buy If You Need a Lot of Trunk Space

Many Many people focus more on interior room than cargo carrying capacity. That’s natural if you have a large family or regularly carpool, but what about drivers who need to carry a lot of stuff most of the time and...

How to Get Honda Dealership Certified

Honda car dealerships offer automotive technician jobs to mechanics who are certified through the many training programs available.

Which Cars Last the Longest?

The best cars are ones that last the longest without needing much maintenance. The Honda Civic has low repair bills and can rack over 200,000 miles.

Q: "Undiagnosed" rough driving, seemingly without cause, most noticeable around 70mph, inconsistent brake pedal resistance

Get an instant quote for your car

Experienced Mechanic?

Earn up to $70/hr

What others are asking

Related articles

Browse other content