20 Most Recent 1999 Volvo S80 - Page 4 Questions & Answers

No. As with any vehicle, maintain clean transmission fluid, and the car will serve you well. However, the 2002 S80 does have a high frequency of instrument cluster failure.

Ever changed out the cabin air filter? Had a T&C and that was a problem cause I didn't know it had one!

Throttle position sensor, or just dirty. Try running higher octane gas, (premium) and/or a gas treatment supplement like STP every other tankfull. High performance engines won't run right on regular gas. My mom uses premium, she gets great performance and better gas mileage in her 99 oldsmobile.

it usually means that the mix ratio is improper. have a certified mechanic correct this with an OBDII.

If there is no obvious alternate post, charge directly at the battery.

Compression TestMisfireCoolant in CylindersSpark Plugs STEAMED CLEAN (Compare them to the others)Boiling ReservoirSniffing with Emissions Gear in the Overflow TankThis should be enough

No. There are at least 2 themostats. One of the stats is hidden inside the water pipe near the pump. Leave it alone. There is a another thermostat on the radiator header tank. 2 wires come from it. Short the wires together and the fan should start. Seperate them again and the fan should stop. To test this stat take it out of the radiator. Get an old pan or tin - fill it with water. Get a test meter or a battery and torch bulb and make a circuit across the stat. The meter / light will not read. Keep it intact and put it onto a stove and start warming things up. At about 80deg C eithe the meter will read or the light will come on. Now tidy up before the missus comes back and loose the evidence. The light coming on proves your stat is working.

Could be thermostat water pump or a clog in the cooling system

The misfire causes unburnt fuel and air to pass by the oxygen sensor. The sensor sees the oxygen and thinks more fuel is needed, so it adds gas. Focus on the misfire, bad spark plug, ignition coil, plug wire. A clogged fuel injector also causes a misfire but less common.

check cooling fan fuse or fuse link.it all is good. fan relay or engine coolant temperature sensor.could have ECM FAULT it controls coolant fan relay and coolant fan.code scan for ECM FAULT YOU WILL SEE CHECK ENGINE FLASH IF PROBLEM IN THE ECM.but check cooling fan hot wire it using jumper wires to battery.if fan okay replace engine coolant temperature sensor.

Hi,

Your transmission does not give the greatest service in the world. it is a GM design and they were prone to have internal problems. There has also been a couple of software updates that Volvo has put out since your vehicle was manufactured. It would be my recommendation to have the transmission properly serviced, (to make sure we have the correct fluid level and condition) and to be sure we had the latest software installed in the Transmission Control Module before we condemn the transmission.They usually do not repair the transmission. They replace it and would cost you around $2500. If it doesn't help, you may consider Aamco transmissions for this repair. They are experienced in rebuilding vs. replacing your existing unit and that may be more economical than replacing the unit. They will also give a 12/12 warranty on their work.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Check resistance on the main positive cable. could be a bad cable or connection at the starter.

Try removing the battery for half an hour or so and then reconnecting (check you have all your radio codes etc before you do this).

no the sunroof has it own module it is part of the motor