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Old 08-28-2005, 02:15 AM   #1
wolfman
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Default P301 codes made easy?

I still can't get anything to post in the "How To" section (Oh Charrrrrlieeee!) So I'll drop this in here. I have seen a recent upswing in the number of folks getting SES lights that reveal the P301 code when scanned. (Misfire) I will toss this out as a quick "general" troubleshooting guide with TWO senarios:

Senario #1.
Upon initial start up, cars runs/idles very rough, though usually sometimes only briefly, and SES light comes on. (Code P301 generated)

In this senario, odds are that a problem exists in the IGNITION system somewhere. Things to check:
1. Spark plugs (non platinum, correct gap)
2. Spark plug wires (cross firing due to age and moisture or oil flooded plug wells in the DOHC engines only)
3. Coil pack towers (corroded)
4. Coil pack to engine bolts corroded at loop connectors

Senario #2.
Car starts and idles ok, cruises ok, but stumbles, jerks and or "misses" during moderate acceleration or hill climbing, and SES light comes on. (Code P301 generated)
In this senario, odds are that a problem lies in the FUEL or EGR system despite what the code suggests. A fault in one of those other two systems may be leaning out the air fuel mixture briefly and causing the misfire. Things to check:
1. Fuel injectors clogged
2. EGR valve sticking
3. MAP sensor vacuum ports clogged/leaking or poor electrical connection
4. Faulty TPS or TPS wiring/connector
5. Items 1-4 in senario 1 (just to be sure)

...
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Old 08-28-2005, 10:00 AM   #2
eRic 02sc2
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Default Re: P301 codes made easy?

you mean p0301? (four digit number) and don't forget p0300, p0302, p0303, p0304.

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Old 08-29-2005, 09:08 AM   #3
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Default Re: P301 codes made easy?

Quote:
> Fm e Ric <
> you mean p0301? (four digit number) and don't forget p0300, p0302, p0303, p0304. <
Simply another example why we should not listen to Wolf's advice, guidance, & assistance. Can't get anything right.
Should we talk about my manual radiator fan swith ????? Wolf: Do you like your morning toast with the crust cut off Regular butter or salted butter

Of course, I would be the first person to omit a zero in front of a number, but then that's me, and perceiving that a zero in front doesn't mean anything.

...
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Old 08-29-2005, 08:39 PM   #4
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Default Re: P301 codes made easy?

Quote:
Originally Posted by Luke
Of course, I would be the first person to omit a zero in front of a number, but then that's me, and perceiving that a zero in front doesn't mean anything.
You're obviously not a computer nerd or a Dukes of Hazzard fan... "01" is not the same as "1"

...
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Old 08-29-2005, 08:44 PM   #5
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Default Re: P301 codes made easy?

Not to worry, if I can ever get stuff to post in the "How To" section again, I'll fix this tragic and horrible error then.

...
Old Saturns never die, people KILL them, so check your damn oil!
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Old 08-30-2005, 08:48 AM   #6
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Default Tragic and horrible error

Quote:
> Fm Wolf <
> I'll fix this tragic and horrible error <
Ok, then I'm withdrawing my "toast" offer... ..........and see that this does not happen again.
For I simply cannot work with "flawed" people.

...
> 95 SL 2 = 649,619 Miles 40.4 MPG, as of 4/19/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable <

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