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When coming to a stop, going in nuetral, idle drops to almost stalling, then bounces up to 1

Tiny
EMURZAYEV
  • MEMBER
  • 2001 SATURN SL2
  • 140,000 MILES
I have changed the PCV valve, air filter, spark plugs and fuel filter. Car is giving me issues when I first start, often stalling unless I rev the gas a bit. Once the car is warmed up, as I approach a stop, as soon as the car is in nuetral and slows down, the idle drops to where the car almost stalls.
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Monday, February 20th, 2012 AT 8:09 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Clean out the idle air control valve and EGR valve also the MAF sensor with an electronic CRC and see what happens-also test the TPS
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Monday, February 20th, 2012 AT 8:13 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one the engine doesnt use a maf sensor it has a map sensor. Also the tps rarely fail on those cars my bet would be on the coolant temp sensors they go bad all the time on those cars. When they go bad it causes stalling hard starts surging all kinds of symptoms. Also inspect the inside of the coolant temp sensors connector if the terminals are green or blue instead if silver you will need to replace the connector also. Do you have any touble codes in the computer.
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Tuesday, February 21st, 2012 AT 3:36 AM

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