1999 Chevy Blazer Computer?

1999 CHEVROLET BLAZER
10,600 MILES • 6 CYL • 4WD • AUTOMATIC
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HDALE
  • MEMBER
  • 1 POST
On acceleration it engine seems to slip and feels like it isn't getting fuel. Eventually it catches up with itself and drive fine until I slow down or come to a stop. The check engine light is on as well. After taking it to a shop and having it hooked up to a diagnostic computer they said it was a bad computer and that it was skipping 1st and 3rd gears. I changed the computer and it is still doing the same thing and the check engine light is still on. Any ideas on what could be going on?
Nov 15, 2009 at 3:19 PM
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
You sure tranny is not slipping?

Scan the computer again-nothing shows up -check the following below

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
Nov 15, 2009 at 4:07 PM
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