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1995 Chevy Blazer ENGINE MISSING

Tiny
95CHEVYBLAZERQUEENS
  • MEMBER
  • 1995 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 17,300 MILES
I own a chevy 1995 blazer v6 and when I am on the high or goin uip a hill. The car seems to miss or I get a jerking, studdering like action. IOs this the timing, Fuel injectors or some thing in the tranny?

The car was jst tuned up, new spark plugs, rotor, distributor, wires, new idle air, new throttle pos sensor and some other stuff. Thanks.

Also, the check engine lights came on and then went off and it's beedn two days since. It seems to happen intermittenly at times but I changed the things that came on the codes. So, I don't know why it came back on. Is the computer bad? Thanks.
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Wednesday, October 14th, 2009 AT 12:38 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Wednesday, October 14th, 2009 AT 1:05 PM

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