Not enough seat belt for my infant car seat - 1988 Volvo 740

I am not familiar with the vehicle but car seats are not all made to fit any vehicle.
There are some that require just the lap belt most require an over the shoulder design. You will have to get the store to let you try a few in the vehicle until you find one that suits. I would expect a young child (baby) seat to require a 3 point over the shoulder style seat belt. especially if you are fitting the seat in the middle as this is the worst place in the event of a head on impact, unless you have full restraint. The other thing to remember is that children as they grow older may decide to take the shoulder straps off as you drive, making them more vulnerable. There are devices out there to help prevent this.
If your vehicle doesn't have a three point harness in the middle you should be able to get one fitted. Ask you Toyota dealer if there is an approved after market belt

I would take the vehicle to a place where they install infant seats,because you can't put a price on a childs life.....hope this helps......cheers.

you may want to check your local law because i think some states require it be be in the middle but im not 100% the best is usualy the middle as long as your seat belt there works good.

Ideally if there is a middle set of latches in the seat, you can install an infant car seat base there. If the seat has any kind of hump or other irregularity then it should not be installed there. Although the middle of the back seat is safest for a child, most vehicle do not have a latch system there. However most cars do have a lap belt for the center seat and that should be used if you decide to place your car seat.

Do not use the latches from either side of the right back and left seat. The latch system is designed to be a specific distance apart to work correctly. If you don' want to use the lap belt then you should put the child seat on either the left or right back seat using the latch system.

fit the baby seat in the rear no problem ,it is extremely dangerous to use a front seat mounted one as dont think that this vehicle has the option to turn the front airbag off .if you move the seat back it will fit but its at your own risk .

Yes those are very good and most car seats come with them. The manufacturers website probably has them available for download as well.

I have a pet peeve against infant or toddler car seats though. It is often very difficult to get them secured properly with belts in some cars. Some belts remain loose until the car detects a collision. This of course makes for a dangerous situation where the carseat stays loose. If your car is like this and you are serious about keeping your precious little one safe, consider adding a second belt of the old style that can be manually adjusted.
I feel strong enough about the importance of this that I would even install it for free if someone bought the belt and brought it to me.

I can't be of much help, except to indicate what Honda says about the seats, and to give you a URL to look at:
Using a Seat Belt Locking Clip
Always use a seat belt locking clip when you secure a child seat to your car with a lap/shoulder belt. This helps prevent the seat from shifting position or overturning. A locking clip is usually included with the child seat. If you need a clip, contact the seat's manufacturer or a store that sells child restraints.
The URL will take you to a more complete reference to your car manual regarding child restraints.
https://techinfo.honda.com/rjanisis/pubs/om/AC9595/AC9595O00020A.pdf
Hope this helps you.

you may have to remove the bolt that holds the buckle to the floor. Try to push the belt into the retractor and see if it frees up.

I assume you are saying it is in the locked mode. It has an automatic lock mode for holding a child seat. When the belt is pulled all the way out, it goes into locking mode. You will hear it ratchet when the belt starts going back in.



Section 01-20A: Restraints, Active 1999 Taurus, Sable Workshop Manual
DESCRIPTION AND OPERATION Safety Belt, Lap/Shoulder The dual locking mode retractor on the shoulder belt portion of the combination lap/shoulder safety belt for the front seat passenger and rear seat outboard passengers operates in two ways:

1. In the vehicle sensitive (emergency locking) mode, the shoulder belt retractor will allow the occupant freedom of movement, locking tight only on hard braking, hard cornering or impacts of approximately 8 km/h (5 mph) or more. The front and rear outboard seat belt retractors can also be made to lock by pulling/jerking on the belt.
   

1. In the automatic locking mode, the shoulder belt retractor will be automatically locked and remain locked when the combination lap/shoulder safety belt is buckled and does not allow the occupant freedom of movement. This mode provides tight lap/shoulder belt fit on the occupant and on a child safety seat or infant carrier installation restraint.
   

1. When the combination lap/shoulder belt is unbuckled and allowed to retract completely, the retractor will switch to the vehicle sensitive (emergency) locking mode.
   

WARNING: REAR-FACING INFANT SEATS SHOULD NEVER BE PLACED IN THE FRONT SEATS.
The automatic locking mode must be used when installing a child safety seat on the front passenger seat and rear outboard seats where dual locking retractors are provided

My Gerber infant seat worked fine and firedepartment said they checked good.

ok the best advice is check all the belts are tight
see if the seat moves at akk should not move one bit
make sure the seat is sitting straight on the normal seat
and if still worried u can go into the local fire brigade station and they will check it for free

remember if ur not sure take every option cause kids are precious and saftey first