Q: Car won't start but will turn over - 2007 Volvo S40

asked by on September 12, 2016

i have a 2007 volvo s40i and the alternator belt broke so I replaced the alternator belt and the accessory belt as well. When I try and start it, it just turns over but won't start. I put in a new battery because my instrument panel said power saving mode. I have no trouble codes showing and all the fuses i checked seem to be ok. i been told that the computer needs to be reset so i took off the battery post and waited 30 minutes to see if that would help and it didn't.

My car has 161000 miles.
My car has an automatic transmission.

Hi there. If the belt broke, then it may have damaged some of the wiring. When the belt breaks, it can hit the wiring going to the crankshaft position sensor which will keep the vehicle from starting. I usually check this and use a scan tool to see what the sensor is reading. If it is reading erratically, or not at all, then there is an issue.

If that sensor is fine, then the issue may be electrical and a scan tool and voltage meter will be needed for further testing. If you plan on getting this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the turn over problem and assist with 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

What others are asking

Very loud grinding on acceleration worse on turns

Hi there. Typically a bad motor mount will make a clunking sounds as the vehicle begins to accelerate or decelerate. The grinding sound while acceleration and turning is a common symptom of a bad or failing wheel bearing as you've...

How much to replace all motor mounts on my 2007 honda odyssey exl

sent to CS

I have a 2006 Volvo s40 that is getting stuck in neutral. If you shift quickly in one motion it will go into drive. When you shi

Hi Kyle. Thanks for contacting us today. Typically, this type of issue is caused by either a faulty brake switch, debris in the shifter housing, internal transmission problems or a faulty shift interlock mechanism. The first thing I'd do is...

vehicle won't turn on or start.

Hi there. Check the battery and see if it has a full charge. If the battery has a full charge of 12.6 volts, then put a load tester on the battery and check to see if the battery will hold...

Fuse box modification.

Hi there - from your description, it sounds like there is no electrical socket in the fuse block in this position. Manufacturers used to include wiring for all possible options when the vehicle was built - using a single wiring...

Getting a "Drivetrain Malfunction" light on a 2011 535i. Had a sensor replaced for almost $400 and that didnt fix the issue. wha

Hello. The drive train malfunction light indicates the computer has detected an issue with the vehicle's drive train or transmission. This can be caused by many things, ranging from a bad sensor, to the need for a new transmission. As...

Rattling sound when driving

If you hear a rattling, multiple things could be causing this issue. The most likely cause would be a broken exhaust shield or mount. When these exhaust shields break, they will cause a rattling sound. When the exhaust mounts break,...

Car won't start. When trying to start, starter makes a clicking noise and then closed back hatch recloses.

It sounds like there is some type of drain on the battery. When there is low voltage in a battery, it can cause several symptoms. The electrical systems can act very strangely when they don't have the correct voltage being...

Truck cranks but won't start - 1997 Chevy C1500

It sounds like you may have an intermittent electrical problem. I would recommend having all of the wiring that is in your fuel system checked to ensure that it is all in good condition. If any wiring has any damage...

Related articles

How to Replace a Car Battery Temperature Sensor
The battery has a battery temperature sensor that can fail if the Check Engine Light comes on, the battery voltage is low, or the RPM curve surges.
How Are Car Sensors Protected From Heat and Debris?
Reliable car performance depends on sensors to collect and relay data. Some car sensors can be cleaned to make them work reliably again.
The Most Common Error Codes for Transmission Problems
If your Check Engine Light has come on, there are a number of conditions that could be causing it. Many are related...