Skip the auto shop - Our mechanics make house calls

Q: My car won't go up steep hills

asked by on

My vehicle won't go up a steep hill. If i try it stops and starts to smell like gas. I have changed the spark plugs and put in a new air filter. I have also changed 7 of the 8 ignition coils. What do you recommend?
My car has an automatic transmission.

Hello. Going up a hill is considered "extra load" on the engine. Issues with handling this extra load are typically due to poor engine performance. Starting with the spark plugs was a good idea. When you change the ignition coils, always change all of them. Have you preformed a fuel pressure test? You may have too much, or too little fuel being pumped into the cylinders. Inspecting your pump, filter, and injectors would all be a good idea. Although no engine warning lights have illuminated, the computer may still have codes set that will help with diagnostics. Specifically if there is a sensor or electrical issue. You may want to have the vehicle scanned, which can be done at most auto parts stores.

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

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

What others are asking

Q: I drove with the emergency brakes on. What went wrong?

Since you didn't actually go down the road with your Parking Brake on, I doubt there was a lot of damage caused, but an inspection of the system must be done to make sure. The problem with your steering is...

Q: Misfire

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Q: Throttle body position sensor

The rumbling noise may be coming from the loose catalyst in the exhaust piping. It would need to be verified by a road test to listen to the noise. If the catalyst is breaking up in the exhaust then the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.