Many things but you might start with a clogged catalytic converter.
Gravity! We fight that loss of power by using more torque.
What would help would be an articulate question. Does "lose power" mean a loss of voltage/current, or a loss of engine power (horsepower/torque)?
Common cause for this type of malfunction is improper timing. This is dangerous in these engines. I suggest you take the vehicle to a competent mechanic immediately.
Loss of power in a 1998 Volvo V70 Turbo can be caused by several factors, including a malfunctioning turbocharger, clogged air filters, or issues with the fuel delivery system, such as a failing fuel pump or dirty fuel injectors. Additionally, problems with the ignition system, like worn spark plugs or ignition coils, can also lead to reduced engine performance. Vacuum leaks or a faulty mass airflow sensor may further contribute to power loss. Diagnosing the issue typically requires checking these components for wear or malfunction.
Check the catlytic converter for blockage
clogged cat
Reactance certainly causes loss in a transmission system, but I^2R or resistance losses are greater.
Check power steering fluid first, then take it to the shop if it is full.
Probably the increased load on the engine caused by the power steering pump.
There are several causes that can cause a generator turbine system to lose power. The most common cause is a lack of fuel.
There are several causes that can cause a generator turbine system to lose power. The most common cause is a lack of fuel.
There is a recall, has do to with a speed sensor