Skip the auto shop - Our mechanics make house calls

Q: Hesitation when the 1999 Honda Civic Sedan goes downhill

asked by on

I have a 1999 Honda Civic Sedan. Just recently I noticed the car starts to hesitate when it goes downhill, while I'm pressing the gas. There's no throttle spins when the hill begins to smoothes out. What could it be?

A: Going downhill? That's interesting for ...

Going downhill? That's interesting for this. Normally, they get problems when you are going uphill. If it's hesitating going downhill and it's not doing it when it goes uphill, unfortunately on that, if you have automatic transmission, it can be a sigh of automatic transmission going out.

Because normally, you have throttle problem going uphill. That means that either the fuel pump is weak, the fuel injectors are not working. But going downhill there is less strain on the engine, and the only thing that I’ve ever really seen that did that, was the transmission going out.

Or, say if your fuel pump has a problem in the gas tank with the feed, and the rubber was rotting, and the gas starts to slash when you go downhill, it could be problem with the fuel pump. You might have that checked out too. Because the fuel pumps and when you move it, the gas slouches into one end or the other and if your pump system has a problem and it doesn't pick up right, it can do that. It can go one way or another or even on the left angle or the right angle.

A professional mechanic will be able to inspect your car's hesitation if you need assistance getting this repaired.

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: What does it mean when a 1999 Mercedes-Benz shuts off when the headlights are turned on?

This is a common problem when the crankshaft position sensor is faulty. This is a small sensor on the front of the motor down near the crankshaft that monitors crankshaft speed which is relayed to the main computer to control...

Q: What is reverse lockout on the manual transmission?

Manual transmissions have come a long way in recent years and now offer a number of features designed for both convenience and safety. The reverse lockout feature on your car’s transmission is a perfect example. Essentially, this is a setup...

Q: Tugging after startup or accelerating from a stop light

Hello. Most of the time, if this is occurring and there is no Check Engine Light, it is because there is a transmission related issue. To diagnose this, I usually start by checking the transmission pressure to see if it...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...