1998 S70 glt turbo givin my sister problems! Scanner read a low volts code I believe it was. We chaned the battery & it did the same thing. So we put in a new alternator. Drove it for a day & the same thing! What else could it be? Please help

 

I'm not really good with the electric components, but I'd guess ignition coil or distributor cap/rotor.

 

Could be a loose cable, or a bad ground. Go through all of the cables coming from the battery. Check all of the ends and make sure they're tight in the connector, and the connector is tight to it's mounting point.
I would say it's not ignition related since it sounds like you're able to drive the car just fine.

 

Low voltage code only means that the computer is getting low input voltage- not the entire car. Check the positive battery terminal- there's a stud with a number of wires attached to it through a ring terminal. Check and make sure that the nut holding it in place isn't loose, and make sure that there's no corrosion on that terminal- it provides power to the whole vehicle- the other part of the cable only supplies the starter. Clean the ring terminal and the post and the nut, put some petroleum jelly on it, and tighten it down. If that doesn't solve the problem, check wiring to the ECM.

 

Also check the stud on the fuse/relay panel the plastic is known to melt and cause problems.

 

actually you know what iv been having similar problems. I have a volt gauge on mine and notice, like if i come from driving highway then get to city/town area the volts drop for a few seconds then jump back up to normal.....and drops a lot too when i turn on the heated mirrors or a/c. any suggestions?

 

It is possible that you have some corrosion on the cable connectors. CLEAN THE BATTERY CABLE CONNECTORS WITH A WIRE BRUSH OR SAND THEM TO REMOVE ANY CORROSION, EVEN IF YOU DON'T SEE ANY.

These newer cars (newer than your dads '76 olds) build battery corrosion a little different. It is like a matalic glaze instead of the glob of white foaming substance that was found on older cars.

Our Jeep had a problem starting and running. I replaced the battery, had the starter tested, replaced relays and it was the battery cable connectors. Just did not look like corrosion was there.

 

kewl good to check thanks. I checked the red wires going to the positive side of the battery and the connector was pretty loose from the wire so i changed them, seemed to improve the voltage. Havent driven it at night yet but thanks for the comments

 

Ok folks sorry I haven't been here for a while, but it was just corroded wires to the starter! Thanks for all the replies!