Three problems related to vehicle speed control have been reported for the 2004 Volvo XC70. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Volvo XC70 based on all problems reported for the 2004 XC70.
Tl- the contact owns a 2004 Volvo Xc70. The contact stated that while driving at 65 mph, the vehicle stalled without warning. The vehicle failed to restart. The vehicle was towed to an independent mechanic where it was diagnosed that the catalytic converter and throttle body needed to be replaced. The vehicle was repaired, however the failure recurred. The vehicle was then taken to the dealer where it was diagnosed that the electronic control module needed to be replaced. The manufacturer was not made aware of the failure. The failure mileage was 132,645. Wh.
Engine hesitation upon acceleration and sudden transition into the "reduced engine performance" mode which was extremely dangerous on the freeway. The incident happened several times with the failure codes pointing to the "etm". In other cases the engine was surging after start and then went back to the "limp" mode.
Car began lurching/chugging forward as I tried to accelerate onto the highway, reminiscent of spark plug problems, except that the plugs were replaced the day before. Car slowed to "limp" mode and "reduced engine performance" light came on. After shutting the car off, waiting a minute or two, I was able to start it and drive without problems. The exact same thing happened exactly one week later. I took it in to the dealer and was told they couldn't find anything wrong--no codes were coming back on the computer and that it was a weather related issue. Less than one week after getting it back it did the same thing, thankfully, after I crossed a major road. This time the check engine light came on, as did the "engine system service required" message. According to the dealer, the throttle control needs to be cleaned and possibly the mass airflow sensor needs to be replaced. I thought Volvo had fixed this on '02 and later. Guess not. This isn't just an inconvenient problem, it's highly dangerous. I was fortunate enough the three times that this happened (within 3 weeks) to be able to pull over and out of traffic. Had I been in heavier traffic, I easily could have been in an accident or worse on the highway.
| Vehicle Speed Control problems | |
| Car Accelerates On Its Own problems |