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190e 2.3
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48 Posts
Discussion Starter · #1 ·
got a 2.3 88 auto,the issue is once hot and in park it idels at 1300: starts cold first try idles at 700rpm, in drive at 1000,but once it warms up and placed park its at 1300.
Can someone help figure this out?
 

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1991 Mercedes 300E
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467 Posts
looks like an vacume leak or possibley an idle air control sensor. could be many things, take to dealer to diagnose but start with these.
 
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