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L4-1.9L Turbo

You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since...

You have two charge pressure sensors and are labeled sensor 1 located near left rear of motor and has a violet, brown and blue wires going to it. The second sensor is also on left rear of motor and has...

Hi there. In general, when a vehicle sputters and is hard to accelerate, it is due to either a fuel or ignition system component failure. Although the O2 sensors are installed withing the exhaust system, they impact the fuel delivery...

Hi There, If you drive for a period of time without coolant in the vehicle, this could have potentially caused damage to the motor resulting in a damaged cylinder head gasket which may cause the car to overheat (https://www.yourmechanic.com/services/car-is-overheating-inspection) intermittently,...

You are probably experiencing what we call "clutch chatter" It commonly occurs because of oil on the clutch lining. But it can also be simply a result of wear and tear forming hot spots on the pressure plate and flywheel....

Hi there. If you removed a fuse and tried to crank the engine over without it, it's possible that it may have damaged an electrical relay to the starter or perhaps blown a fuse to the starter relay. It's also...

If the jerking reaction is something related to pressing the brake pedal, this may suggest a faulty brake caliper. If your vehicle pulls to one side when you apply the brakes it typically means that you have a braking imbalance...

Hi there. It's very common for a bad or failing catalytic converter (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-catalytic-converter) to cause multiple engine performance issues ranging from sluggish performance to potentially damaging seals and other internal engine components. It's very difficult to tell you exactly how...

Hi there, thanks for writing in. I am sure that you have driven your car far enough (since repairs) to rule out residual oil in the exhaust system. The P0015 "cam retard" code (https://www.yourmechanic.com/article/p0015-obd-ii-trouble-code-camshaft-position-b-timing-over-retarded-bank-1-by-jay-safford) may be a cam sensor, oil...

There are many faults that can cause a vehicle to stall. A faulty engine speed sensor or weak fuel pump just to start. If the Check Engine Light (https://www.yourmechanic.com/article/what-does-the-check-engine-warning-light-mean) is on, the vehicle can be scanned for fault codes. The...

It is possible that the noise is just a normal function of the solenoid. It is also possible that the new solenoid you have is also a faulty part. If you have a warranty you could try replacing it under...

Hello, thank you for writing in. There is one major issue that is likely causing everything else you are experiencing. This is your fuel system. You need to start by checking and/or replacing your fuel pump. When it gets low,...

Hi there. When you have a blinking engine light coming on sporadically like you've indicated and and you're experience symptoms exist, it's is likely that an error code has been triggered in the ECU of your Volvo that will pinpoint...

Technically, as long as the sway bar doesn't come into contact with other moving parts, or rub on other critical components, you should still be able to operate the vehicle. You will need to understand that the handling will definitely...

Best case scenario: you just need your front tires re-balanced. Your tire store can do that job for you. If the tires are worn unevenly, then they may have to be replaced and the front-end re-aligned. If you do these...

The CV axle joints (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement) should be inspected for wear and/or damage. Putting the transmission into drive suddenly loads the joints and if there is looseness in those joints, as the play is suddenly taken up you can hear a...

That is an interesting code since your engine only has 4 cylinders. It is possible that the vehicle has the wrong information stored in the computer and is throwing a code for a V-8 engine. I recommend having your computer...

Hello there, how long your 2003 Volvo S40 lasts is determined by many different variables. If the vehicle is maintained (https://www.yourmechanic.com/scheduled-maintenance/volvo-s40/?year=2003&mileage=90000) properly it will last much longer than a vehicle that is not maintained. It is impossible to predict how...

Hello. If you have poor connections at the ignition coils (https://www.yourmechanic.com/services/ignition-coil-replacement) then that will cause cylinder misfires. These loose connections can also shorten the life of the ignition coils. The connectors need to be replaced in order to ensure that...

You will first need to check to see if the fuel filter is not defective and installed correctly and not backwards. If the filter checks out okay then you may be having another issue that is causing the engine to...