Question about 2004 Chevrolet Colorado

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Engine lite on, code says o2 sensor. changed a week ago both of them. now the o2 is on agian, another code for IAC.

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It may be loose or faulty wiring causing it to come on again, I would check the connections.

Posted on Nov 06, 2009

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1 Answer

What are codes P0133 & P1134, for a 2005 Buick Lacrosse 3.8L V6 with 94,000 miles.


i have replaced an O2 sensor and had similar failure after 1500 miles.
I removed it, chkd it, reinstalled it and it ran fine.
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1996 dodge caravan 2.4 code p1294


on dodge motors
fitted a lot of parts and still no better

the fault code clears and comes back as a intermittent problem

could be electrical voltage drop off or heat related failure

i wonder if your 02 sensor ,the catalytic converter
or other related sensors
are causing the fault to come back
if needed .....fit a new air filter...

how the test is determined

P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored and Set Condition:
P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored: With the engine idling and the transmission in drive, if automatic.
There must not be a MAP sensor trouble code or a Throttle Position Sensor trouble code.
Set Condition: The engine idle is not within 200 rpm above or 100 rpm below the target
idle for 40 seconds. One trip fault.

POSSIBLE CAUSES
INTERMITTENT CONDITION
IAC MOTOR PASSAGES
VACUUM LEAKS
AIR INDUCTION SYSTEM
THROTTLE BODY AND THROTTLE LINKAGE
TEST ACTION APPLICABILITY
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My 2000 Buick LeSabre was recently serviced and they replaced the MAF sensor. 3 days later It ran rough after starting. It smoothed out after that. Not wanting to spend another $400.00 I bought a...


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Hi, I have, 2001 Nissan Maxima. Get check engine lite. Car now has 60k miles. Local mechanic had already replaced two O2 sensors 9 months ago. I don't know what the codes were at that time. Check Engine...


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