Skip the auto shop - Our mechanics make house calls

Q: 2004 Volvo XC 90 hesitates on highway speeds

asked by on

2004 Volvo XC 90. The car hesitates on a highway speed. I cleaned the throttle body, changed the MAF sensor, changed the sparkplugs. What else can I do? Thank you.

A: To begin with, those cars are notorious for...

To begin with, those cars are notorious for having problems with electronic throttles. So if it has an electronic throttle, I advise to change the whole electronic throttle assembly. I change them all the time on those.

Volvos are very complex and if you don’t have a dealer-level Volvo scan tool, you are just guessing on those things. With one of those tools and the a professional who knows how to operate it, you won’t need to guess on some expensive parts, but you are going to want to change the right parts the first time.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Car knocking from low oil

Hi there. Running low on engine oil makes the metal parts inside the engine rub against each other without being properly lubricated. This can cause major internal damage to any or all the components that rely on a steady supply...

Q: Something is draining my battery, both battery and alternator have been checked and are working fine.

Hi. Your diagnosis is spot on! If the alternator and battery are good, something is causing a pretty significant drain on the battery, and this needs to be identified. This problem can be diagnosed by connecting an ammeter to the...

Q: I get a check-engine light and Reduced power. Throttle not responding on hill climbs.

Hi there. The first thing to do is get a code reader and check the codes that the engine has stored since the engine light is on. This will give you a starting point and a place to check for...

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...
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...
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...