1996 e320 stalling problem
 

Hi would really appreciate some help with this, I have a 1996 E320 that starts no problem but when it gets up to temperature and I switchthe engine off for a couple of minutes,it starts againok but when Iaccelerate a little and then brake it cuts out and beeps. After that sometimesat very low speed the revs go up and down between 400 and 700 revs! Hope someone can help. Thanks!!