2002 Chevy Impala hesitation on engine while driving

Tiny
GTURN77
  • MEMBER
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 82,000 MILES
Harmonic balancer was wobbling was told it need to be replaced-replaced immediately- after harmonic balancer being replaced the engine seemed to be hesitating (didnt have this problem prior to harmonic balancer being replaced)to get up to speed the mechanic told me the intake manifold gaskets or valves were leaking-could this be causing the hesitation
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Wednesday, February 18th, 2009 AT 11:51 AM

6 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Well, yes an intake could cause the problem, but it doesn't make sence that it started as soon as the harmonic balancer was replaced. The two are not related. Regardless, is the check engine light on? Also, check the crank sensor to make sure they replaced it correctly and securely.

Let me know what you find.

Joe
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Wednesday, February 18th, 2009 AT 7:36 PM
Tiny
GTURN77
  • MEMBER
No check engine light-everything else on the car is ok but that hesitation-Is it a timing issue?
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Thursday, February 19th, 2009 AT 10:22 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
The crank sensor could cause a timing issue if it damaged, loose. Take a look at it to make sure it's not damaged. Also, it's located on the timing chain cover near the harmonic balancer.

Let me know what you find.

Joe
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Thursday, February 19th, 2009 AT 1:42 PM
Tiny
GTURN77
  • MEMBER
No other problems with the car-just took it back to where the harmonic balancer was replaced and the mechanic claims the trans is having trouble shifting from 1st to 2nd gear possibly a solenoid valve and I should have a transmission flush-I have already had one in the last couple months-Would the crank sensor cause this kind of problem-thanks for all your help
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Thursday, February 19th, 2009 AT 3:38 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
The two are not related.
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Thursday, February 19th, 2009 AT 6:27 PM
Tiny
POOPOOPOOROO
  • MEMBER
Any answer to this? I have exact same issue on 99 malibu. Changed harmonic balancer and now there is a new hesitation, usually at cruising speeds with light acceleration.
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Friday, February 17th, 2012 AT 8:02 PM

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