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Old September 26th, 2012, 09:24 PM   #1
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Chevy Blazer bad idle

Posting for a friend of mine...

2001 Chevy Blazer
4.3L auto

Decent idle in park but when shifted drops off and stalls or catches itself and rpm shoots up around 1500

New parts:
Fan Clutch
Idle air control valve
Throttle position sensor
Air check valve

Throwing out codes of p0418, p0134, p1133 and p0463
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Old September 26th, 2012, 10:21 PM   #2
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Codes are probably a different issue.. 418 is secondary air injection, usually not a running issue. 134 and 1133 are drivers side upstream 02 sensor.. could cause a running problem, not usually your symptom. And 463 is fuel level sensor issue . Sounds like u have a major vacuum leak.. good luck
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Old September 29th, 2012, 06:07 AM   #3
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How does the brake pedal feel, any vac boost? EGR valve will stick open and cause rough idle & no power brakes.
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Old February 13th, 2013, 01:23 AM   #4
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My 98 spits and sputters as soon as I hit the gas... I'm lost
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