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p0401 and p0107 codes

 
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d-666
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2000 Chevrolet Impala
1990 Chevrolet Blazer


PostPosted: Mon Dec 13, 2010 9:09 pm    Post subject:  p0401 and p0107 codes Reply with quote

i was driving home frome school,and when i tried to pass a slow car,my car starts to '' buck''.got to the gas station,fill er up and it runs good.scan it with my sh*tt* obd reader, reads p0401 and p0107.erase the codes but the chek engine stays on and p0401 is active again..anyone experience this here?
tnx
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00impala123
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2000 Chevrolet Impala


PostPosted: Mon Dec 13, 2010 9:24 pm    Post subject:   Reply with quote

p0401 is insufficient EGR flow

p0107 is Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

just so you know what the codes mean..I have a final soon but if there's no answer I'll try to post back later with a more helpful suggestion

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d-666
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1990 Chevrolet Blazer


PostPosted: Tue Dec 14, 2010 3:17 pm    Post subject:   Reply with quote

ive tried to erease the codes,but the p0107 keeps poping back..
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00impala123
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PostPosted: Tue Dec 14, 2010 3:25 pm    Post subject:   Reply with quote

So is the p0107 the code that keeps coming back or the p0401?

If the code popped up and hasn't come back since you cleared it. I wouldn't worry about it just keep watching for it to come back. Could be something just starting to go bad.

If one keeps coming back then there is a problem that needs to be fixed. I got another final today then I have a break so I can help diagnose this issue tonight lol

EDIT: Just a quick tip. Look at the area around and underneath the EGR. Make sure it looks alright and see if you can find out if something is blocked up.
Cleaning the EGR and Throttle body is the first place I would start

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d-666
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PostPosted: Tue Dec 14, 2010 5:24 pm    Post subject:   Reply with quote

thanks its the p0107 that keep comin back..
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00impala123
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PostPosted: Tue Dec 14, 2010 6:19 pm    Post subject:   Reply with quote

Could be the MAP sensor gone bad, check the connections on that to start

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Frank
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PostPosted: Tue Dec 14, 2010 6:28 pm    Post subject:   Reply with quote

Have you changed your PCV valve recently?

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IffyG
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PostPosted: Tue Dec 14, 2010 6:54 pm    Post subject:   Reply with quote

d-666 wrote:
ive tried to erease the codes,but the p0107 keeps poping back..


Clearing code's doesn't fix the underlying problem... makes sense that it keeps coming back.

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05whiteSS
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PostPosted: Tue Dec 14, 2010 10:30 pm    Post subject:   Reply with quote

Warped UIM, I chased that code for 6 mos... Take a can of carb cleaner with the red straw attached and spray around the edges of the UIM. When the engine stumbles you've found the leak.

TJ
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