Hesitates and stalls

Tiny
WILLIEDYNAMITE11
  • MEMBER
  • 2003 OLDSMOBILE ALERO
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I replaced my spark plugs recently and now the vehicle is hesitating and high RPM's at stops or it's going to shut off one of the other. It has tape and stalls when meet. I was wondering if you could give me some insight on what maybe I should look at next? Thank you.
Monday, February 24th, 2020 AT 11:08 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

High RPM's or "searching" RPM's at idle is usually a sign of a vacuum leak somewhere. This would also cause other driveability concerns like hesitation at high RPM's, which is dangerous for your vehicle. To check for a vacuum leak inspect the air intake track, throttle body, vacuum and EVAP lines. Look for broken or cracked vacuum lines. Also check around the intake manifold and listen for any hissing of air being sucked into the engine. Please get back to us with what you find.

Thanks,
Alex
2CarPros
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Tuesday, February 25th, 2020 AT 12:05 AM

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