audis62nv

I changed my radiator and now have air trapped in the system, is there any way to get it out? also would that cause anything to happen? my other problem that i am having is that under hard acceleration the car jerks, but only sometimes... any suggestions as to what the problem could be? one last thing, the red BRAKE light comes on at random times like when i'm slowing down for a stop sign or when i shift up a gear. any solution?

squidix9

chassis there is an air bleed screws at the firewall on the heater line to do that. check to see if your chassis has those.

<img src="http://www.geocities.com/dkadarisman/articles/005.GIF">

(not an Audi but close enough)

For the jerking check fuel pressure and coil packs. Both are possible for that symptom.

For brakes first do a visual of the lines and fittings. How are the pads, old/new? How is the fluid level? And how does the pedal feel, firm/soft, dropping with continued pressure? You may see some fluid dripping below the proportioning valve on the master cylinder.