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Volvo S40 Problems

The Volvo S40 is a pioneer in the S series. It is a compact executive car now in its 2nd generation that features a four-cylinder turbo diesel and a fuel-injected gasoline engine. The S40 was the first car ever to be awarded four stars in Euro-NCAP. Like all Volvo cars the S40 is renowned for exceptional safety features but can still have issues that can puzzle car owners. Below are frequently asked questions on issues relating to the Volvo S40 that have been answered by the Experts.

Where is the low pressure AC port on a non-turbo Volvo S40 to charge the AC?

The low side port is the only one that can be used with an aftermarket AC recharge kit as these are designed only for the low side ports. It can be found on the large diameter AC pipe on the front of the engine, on the same side as the timing belt cover. The best way to recharge an AC system is to evacuate it first but that is not possible with an aftermarket recharge kit.

If a Volvo S40 has a check engine light on and the body of the car vibrates could this be due to transmission mounts?

This type of vibration could be consistent with bad transmission mounts. The S40 has two lower rubber mounts which can easily be inspected to see if they are torn. The other two mounts are liquid filled. Their condition is more difficult to determine because there is no indication if liquid has leaked out. However before looking to the mounts, the problem could also be a consistent engine misfire, causing the engine to vibrate. Find out why the check engine light is on because the problem could be due to faulty timing.

If a Volvo S40 makes a consistent clunking sound during acceleration is this a transmission problem?

Since the sound is speed-related it most likely is due to bad CV joints though some engine or transmission problem cannot be ruled out. An experienced technician will be able to identify the cause with a useful tool known as a ‘chassis ear’.

Would it be better to remove a blown 1.9T engine on a Volvo S40 and leave the transmission in place since it is being used?

Generally the engine and transmission come out together and are difficult to separate. But if the engine can be lifted straight up it might be possible to take it out leaving the transmission behind. This is not going to be easy. Removing the suspension is a better way to go.

What would it cost to change a head gasket on a Volvo S40 and can it be self-replaced?

Replacing a head gasket is not a job for amateurs. Additionally when the head is removed it should be checked for flatness and cracks. This repair job is best left to a professional. The cost of Volvo S40 head gasket replacement parts will range from $100 to $150 and it will require 12-hours of labor. This is always based on location and consumers should shop for the best price. During the replacement the thermostat and temperature sensor might also be changed if needed.

The Volvo S40 is an exceptional vehicle which is robust and rarely needs attention other than routine maintenance. However when specific problems do arise it is always useful to consult an Expert for guidance on the right way to resolve Volvo S40 issues.
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