20 Most Recent 2004 Volvo S40 - Page 4 Questions & Answers

be specific please...

pump is in the tank.. also check the fuel filter too..

22mm spanner of the ring type then unplug the wires slip the ring over the plug and undo it anti clockwise .What could be difficult about that

I would change the thermostat with the OEM adn it should be fine, the ECM needs to see a certain engine tempreature to control fuel ratio.

see if the timing belt\chain is broke,normally when it brokes the car slow down and stops and dont start anymore.

sound the fuel pump. is there a bzzing noise in the gas tank when you turn the key

When you disconnect your battery and then reconnect it again, it disables the radio. This is an anti-theft protection for your car radio. The enable your radio the activation code is in your vehicle owner's manual. If you do not have this code you need to go to your Volvo service centre and get them to enter this code for you.

Here's a link on your timing marks.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152801c12ba

After the car has been sitting still for awhile, so that the water isn't hot enough to scald you, open the top vent and put the vent aside. Next, open the stop **** at the bottom of the radiator, and let the fluid drain into a container that you have placed directly under the stop ****. That's so the fluid won't get all over your garage floor. After most of the fluid has drained out, then take your garden hose and fill up your radiator, then let it drain once more. After that, you can put in ethylene glycol ( engine coolant) and maybe an anti-rust additive if the fluid you drained looked brown or reddish. Make sure you closed the stop **** at the bottom of the radiator all the way. When full, replace the top vent, making sure it's also closed and secure completely. All done.

P0103 - Mass or Volume Air Flow Circuit High InputPossible causes- Dirty mass air flow sensor - Dirty mass air filter - Mass air flow sensor harness is open or shorted - Mass air flow sensor electrical circuit poor connection - Intake air leaks - Faulty mass air flow sensor

Check, test or replace MAF sensor.Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.Thank you for using FixYa, have a nice day.