In idle it chugs like it wants to stall out

Tiny
HUNTER RASCH
  • MEMBER
  • 2001 PONTIAC AZTEK
  • 6 CYL
  • AUTOMATIC
  • 210,000 MILES
I have had this car for a like eight months. When I first got it I replaced the battery then just two weeks ago I had to replace the alternator. Ever since when in idle it will run for a bit then chug like it is going to stall out. Any ideas because I am clueless.
Tuesday, November 6th, 2018 AT 5:15 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning.

Is the check engine light on?

There are many reasons this can happen.

1. Idle air control motor.

2. EGR valve partially open.

3. Throttle body dirty.

4. Fuel pressure regulator leaking and flooding the engine with fuel.

5. Vacuum leak.

All these things need to be checked to see.

If the check engine light is on, have the system scanned at a parts store. It is a free service. Let us know the codes so we can narrow the area of failure.

Roy

https://www.2carpros.com/articles/engine-surges
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Tuesday, November 6th, 2018 AT 5:22 AM
Tiny
HUNTER RASCH
  • MEMBER
  • 2 POSTS
The check engine light is not on though. Sorry I should have mentioned that.
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Tuesday, November 6th, 2018 AT 6:58 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Okay, all those things listed needs to be checked.

Roy
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Tuesday, November 6th, 2018 AT 7:54 AM

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