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07 Cadillac Escalade 170k will not idle when in drive at a stop

  

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Hello I have an 07 Cadillac Escalade with 170k miles. When I come to a stop when in drive it shuts off and is hard to start back up. 

I removed the MAF and cleaned and replaced, I also verified alternator output, I replaced the Gas purge valve with no help. can you please give me a clue? There are no codes either.

 

Thanks, BigGee


Hello Scotty I found a loose spark plug so I removed and cleaned and replaced it so the truck doesn't die anymore but just has the rough idle after driving for a while and then while in drive with the brake applied, can you advise where i should look next?
its a 6.2liter


1 Answer
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You should probably check all the spark plugs and then the air filter to see if it's clogged. I might be wrong so don't take my word right away.


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