Question about 1999 Pontiac Grand Am GT

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Code po301 then two weeks later po133 came up on my actron car runs rough and stals out i changed o2 sensor on back of motor a month ago, plugs and wires.

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Change both front sensors-- if you have dual exhaust

What about the PO301 ?
That is a misfire on cylinder #1

Your old O2 Sensor, that was slow to respond,
as well as a misfire, shouldn't cause a stall

You had 3 problems

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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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.
P0133 is related to slow response of O2 sensor. P1134 is mfg specific so google that for ur car.

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I got a 2001 Oldsmobile aurora that the code reads PO301


well that code means ur have a missfire in cylinder one change the wires for the spark plugs that really the only thing i can think off beacuse you have already done the spark plugs and the oxygen sensors and the coil packs

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What could cause my bank 1 O2 sensor to keep going bad


For the code pulled was diagnostic trouble code diagnostics done or was the O2 sensor just replaced > What was the code # P0xxx what . There are a number of codes for the O2 sensors on cars . They don't say replace the O2 sensor . diagnostics must be done , electrical circuit testing , plus other tests

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My 1997 f150 4.2 is running very rough! The fuel pump, plugs, engine coil pack, and injectors have all been changed. CSS were all cut down and were welded back up. The check engine light came on and the...


It could be the co2 sensor, but have you thought of having a cylinder leakage test done?? A competent garage should be able to perform this test for you. Basically they pump compressed air into each cylinder on the firing stroke, in turn, to establish that all is gas tight. If you have a broken piston ring or leaking valve, this will show up as a leak and could explain the rough running, especially on number five.

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1 Answer

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
images-trsfwikau0d5dnlwn4zno1ix-3-0.jpg

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1 Answer

I have a 2004 Chevy Malibu. Bogs down and stalls with acceleration. Check engine light flashes. Idols fine. Changed the MAP as it had a P0101 code along with the P0300. Changed the plugs 3 weeks ago and...


make sure you have ngk or ac delco iridium plugs installed. Also common problem on the 2.2L ecotec is the cat plugging. Easy check is to remove the front o2 sensor (very easy 22mm wrench) and start the car and rev it. If it revs freely now and does not bog the cat is plugged. They are covered fed. emissions warranty 8yr 80k, all gm dealers stock the cats for the 2.2 ecotec.

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2004 GMC Envoy has trouble idling


Try the fuel filter. Sounds like the engine might be running rough due to weak fuel pressure. Its cheaper to replace, especially if it's still original from 04. Try running some injector cleaner through a couple of tanks of high octane gas.

Aug 06, 2008 | 2004 GMC Envoy

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