WHAT CAN CAUSE A SMALL HESITATION UPON ...

  • Tiny
  • Anonymous
  • 2003 Chevrolet Trailblazer
  • 89,000 miles

What can cause a small hesitation upon acceleration and engine dieseling after run when turning engine off

Friday, March 22nd, 2013 AT 6:54 PM

2 Answers

  • Tiny
  • Randico
  • Member

Fuel entering the intake, this can be from fuel injector to fuel pressure regulator that leaks through its diaghram,
where a vacuum to the intake hooks up at.

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Friday, March 22nd, 2013 AT 7:17 PM
  • Tiny
  • hmac300
  • Expert
  • 43,014 posts

Scan for codes and check fuelpressure first. This particular engine has a tendency for the throttle plate ot get sticky and casue problems clean it on both sides with choke cleaner as well as iac hole.

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Saturday, March 23rd, 2013 AT 3:08 PM

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