Volvo v70 2003 cuts out when decelerating hard & steering locks

Hi Sherita

Obviously this could be very dangerous

Pull in to a Volvo dealer & get it checked

There could be a re call of your model if this is a known Volvo problem.
Volvo pride themselves on their Vehicle Safety.
Dealer shouldn't charge for a possible manufacturing problem

Write down a little diagram on the routing of the serpentine belt!!!

Then use a 1/2" or 3/4" wrench with a short extension to insert into the belt tensioner and undo the tension to unhook the belt.

Then it's pretty straight forward, undo the hose, undo the line, then there are holes in the pulley that you turn until they line up with the bolts and you can undo them.

Install is the reverse. :) Oh, and make sure you get the right fluid. I think Volvo specifies the Pentosin CHF11S, but the Pentosin CHF202 is compatible and easier to find/get.

When you refill it, the easiest way I've found to bleed the system is to fill the reservoir, twist on the lid half a turn (to lock it in place, but not tight, you want to let air bubbles escape) and then have the front wheels off the ground and turn the wheels lock-to-lock a couple of times. Then check the fluid and bring it back to level, then do the lock-to-lock steering thing again. That should have most bubbles out. Make sure the oil level is good and then snug the lid down and start the car.

The engine will run the pump and you can steer it lock to lock a few times again and re-check the fluid.
You DON'T want to run it low, because when you start wearing seals and parts in the steering, you will at some point end up replacing the rack, which is messy to do on your own, and expensive if you have a mechanic do it.

Good luck!

you are supposed to replace it with only Pentosin CHF-11 hydraulic fluid or something equivalent. And also maybe your used pump is bad, or you have air trapped. To bleed it turn lock to lock many times and hold it at lock for few seconds.Check this video out. Volvo S60 Power Steering Drain and Fill

The pump may not be working as and is now under stress caused sometimes by the power steering pipes braking down on the inside of the pipe. You will have to replace the pump and check the pipes from the power steering pump.

Check the fluid level in the power steering reservoir and also see if it needs flushing. You could probably "cheat' a flush by using a turkey baster to suck out all the fluid and replace it with fresh fluid, then a day or so later, repeat it. Do this a few times until the fluid remains pretty clean (meaning you've replaced it all) and see if it behaves normally.

Going from memory, I think your car needs a specific Pentosin fluid (CH11? CH202? something like that) - make SURE you get the right fluid.

ignition is locked,and will not turn over. do you have any suggestions on what the issue could be?

Power steering pump.

if the wheels are pointed to the left than turn the steering wheel gently to the left. If there is to much pressure on the steering wheel position lock it will make it difficult to turn the key. Taking the pressure off the lock by steering the wheel into the direction of the turn will help take the pressure off. If that is the problem the key should turn. If the key still doesn't turn than there is a problem with the lock cylinder.

With the key removed from the lock cylinder you can tap on the lock cylinder with the handle end of a screw driver. After a couple taps try turning the key again. Repeat a couple of times. If the key turns after trying this than the lock cylinder needs to be replaced ASAP.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Flushing is recommended. Have a look at the upper and lower couplings at the steering rod just before the steering rack which could be jammed.

Horrible squeal. If my 740 made a horrible squeal I would be upset also. These ideas - timing belt has somehow slipped out of time. Easy check. One of the other belts are slowing the engine any of them can squeal: The alternator belt The power steering belt The fan belt. Does the noise occur only when driving? Does the engine sound normal when revving in neutral? Does turning on the lights or a/c affect the noise? Does the power steering work when car is standing? Is the squeal heard when turning the wheels. A logical diagnosis will identify and eliminate these easy to fix problems.