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Hi. I used to help design the software used to talk to Volvo onboard electronics. In fact, I helped write the throttle module relearn procedure. There is updated software for the module that may help with your problems. A reflash...
There are a few things that can cause vehicles fuel trims to vary from normal. A vacuum leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-vacuum-leak) is a big thing. Broken or worn crankcase ventilation hoses and gaskets that are failing to seal can cause lean conditions....
It sounds like you may need a starter (https://www.yourmechanic.com/services/starter-replacement). The testing for it is pretty straightforward. Check the battery cable going to it, and check for power at the start wire. If there is power at both, it will need...
The illumination of the check engine light means that diagnostic trouble codes were set during this incident. The codes are probably "related" to the knocking noise. If there was a mechanical failure in the engine, these codes could have simply...
Hello - if you drive in any area frequented by sand, gravel or other large trucks that haul aggregate materials, this ends up on the highway, is kicked up by all vehicles, and attacks your windshield. Driving in northern states...
Hello, this code represents a slow acting thermostat getting to engine operating temperature which is about 195 degrees. The computer monitors the time to get to operating temperature, if it takes too long it will set this code. The...
Hi there. Most of today's modern cars have service light systems that will illuminate when routine service is due. However, this is not a good way to determine when you should have oil changed; as some vehicles only illuminate oil...
Hello - the first task is to see what problem codes are set, causing the Check Engine light to come on. Check oil level as well. Hopefully, the oil leak is not the root cause of the Check Engine situation....
Hi Rebecca. The Service light is a vague warning and can indicate something as simple as too many miles between oil changes to potentially serious faults in the engine. In most cases, the low fuel level would not trigger this...
In In older cars, a distributor is one of the central parts of the ignition system. Since the early 1990's, many automakers have moved to using ignition systems without distributors. Though the number of cars with distributors has declined over...