My 1998 Honda Accord trouble code is 5 and the

you mean to say the engine is missing?

steering , pulls no braking or yes.?
do not drive car (late post but is a warning to all)
my wild guess?
lug nuts loose?
cracked disc brake rotor and soon to crash.
wheel bearings going out, same.
gross cv failure.
tire damage.
wheel damage.

The shaking may be a separated tire.

If the check engine light is on there will be a code. Have the computer scanned for trouble codes to see why the light is on.

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You need to take action immediately as this is a serious issue. It is important that you jack by the car and check on both the left and right side suspension and steering sections. It is possible that a link of the suspension has come off. Check the balance rod, the shockabsorbers, the lower arm, the steering links, ball joints and the struts. You must not drive the car unless this is repaired.

If it only shakes when accelerating and not when coasting or up to speed it is probably your inner c.v joints.

If it shakes the whole time it is most probably one of the following

-Wheel balancing
-damaged tyre
-bent or buckeled rim

OK, when the ABS module is unplugged, the same results. That tells me that the ABS system is not working properly.
Did they look into the master cylinder and other abs related components?
Any ABS codes on it?

If steering wheel shakes above 50 mph that's likely to be the tires on it, rather than a brake problem.

Have tires balanced and rotated and inspected for out of roundness that might cause vibration above 50 mph.

The problem lies in the front rotors. If the steering wheel is shaking without braking, then we need to break this up. If it's low speed(1-15 mph) then you have a tire that is coming apart. Highway speeds, you need the wheels balanced. If it's only while braking then you need to have the brakes inspected. If pad replacemnet is required, go for it. When they address the rotors, DO NOT TURN THEM ON A CONVENTIONAL LATHE. Honda REQUIRES them to be either turned on the vehicle(on the car lathe) or replaced. Then it comes down to quality. Always replace with the higher quality parts on these. If you do not, the problem will occur again, and the sme is true if you turn the rotors off of the car.

i am having the same problem with my 1998 accord. will let you know when i get to the bottom of it. it most likely is idle speed needs setting again. or worn engine mount.

90-97 accord are very known for bad ecu (computer located under the steering wheel).