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Chevrolet Impala: 05 Impala 3.4L Check engine light on. fault
'05 Impala 3.4L Check engine light on. fault code P0401 insufficient EGR flow code present. Removed EGR valve & inspected EGR ports on exhaust and intake ports. No blockage found. Replaced EGR valve w… read more
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HELLO AGAIN I HAVE A2001 CHEVY IMPALA WITH A 3.4 V6 RUNS GOOD
HELLO AGAIN I HAVE A2001 CHEVY IMPALA WITH A 3.4 V6 RUNS GOOD BUT HAS THE FOLLOWING CODE P0401 EGR INSUFFICENT FLOW CAN YOU PLEASE TELL ME HOW TO REPAIR THIS PROBLEM THANKS AGAIN DOM1026… read more
Ron Z.
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Chevrolet Impala: hi i have a 2001 imapala 3.4 i have the check
hi i have a 2001 imapala 3.4 i have the check engine light checked it and it gave me p0171 two times, p0401 and p0440 can i get some help plz… read more
Tim's Auto Repair
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Chevrolet Impala: 2003 chevy Impala 3.4 L .....all these things
2003 chevy Impala 3.4 L .....all these things happen all at once.... the a/c stop working.... the interior light out .... power door locks stoped.... the day time running light stoped.... the trunk lo… read more
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impala: it cuts..plug wires..converter..pluged gas runs 50 psi please
when i first start my impala push gas it cuts out also after ten min it dies unless u keep it running also when u put gas hard it sounds like its starving for air sucks hard but not reving like it sho… read more
GM Tech (Cam)
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Chevrolet Malibu: 2002 chev malibu has engine light on. code
2002 chev malibu has engine light on. code is low egr air flow. EGR valve has been replaced, light reset then came on again a few miles later. What should I do next? I don't have 500.00 for a service … read more
Ron Z.
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2003 chevy impala: ive put a new egr..exhaust..convertor..same code
i have a 2003 chevy impala with a notorious code po401, ive put a new egr and replaced the exhaust from the convertor back, i drive a couple miles and get the same code,… read more
Paul M ASE Master
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monte carlo: p0401..oil pressure switch circuit problem..egr
i have an 01 monte carlo and it has 3 codes. p0401, p0440 and a code indicating the oil pressure switch circuit problem. I am trying right now to figure out the deal with the egr. I removed the valve … read more
GM Tech (Cam)
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2002 venture: check engine light..scanner..egr valve..light went
I have chevrolet 2002 venture ,6cyl,auto .The check engine light is on and when i took it to autoparts, code P0401 came up on the scanner-restricted air flow.I was advised to change the EGR valve whic… read more
Ron Z.
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2003 Chevy impala: egr valve..pipe down to the exhaust manifold
I have 2003 Chevy impala Base that the engine light stays on. I have replace the EGR valve and removed and clean the pipe down to the exhaust manifold. Remove the battery post and reinstall to reset t… read more
Dave Nova
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Lumina: p0401..egr valve and cleaned..throttle body..keeps coming back
I keep getting a code P0401 on my Lumina car, I replaced the egr valve and cleaned out the throttle body and the egr port, it keeps coming back any tip?… read more
carguyjosh
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2000 chevy impala: egr valve..twice engine check light still comes
I have a 2000 chevy impala replace egr valve twice engine check light still comes on what is causing this do I need to look for other problems engine size 3.4… read more
Michael Moore
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1999 Chevy Lumina: P0401..Air Flow..EGR Valve..the same code came back
I have a 1999 Chevy Lumina with a DTC code P0401 EGR Insufficient Air Flow. I replaced the EGR Valve and a few days later the same code came back. What else could it be?… read more
Steve
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3.4: impala..insufficient flow detected on the obd11 a new egr..eng
my04 impala 3.4 the erg vaule reads insufficient flow detected on the obd11 a new egr was put on and it reads the same thing and the chegk eng. light is back on . this is the third one to be put on wh… read more
msarles1
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Mirage: I am getting a code PO-401, the egr valve..filters..same code
I am getting a code PO-401, the egr valve have bben replaced,engine have been retune,plugs,wires,filters,etc,the milage is 100003,.I have reset the computer 3 times,and every 3 days,the same code show… read more
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Chevy impala: my egr valve..engine light comes..15 miles..code comes
my egr valve has been replace twice in the last year but my engine light comes on about 15 miles after replacement and the code comes up 0401 chevy impala 3.4 2000 what should i do?… read more
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98 chevy lumina: air flow..egr valve..gaskets..car seems to run fine
I have a 98 chevy lumina, 3.1 and im getting a 401 code ( insufficient EGR air flow). i was told that it was the egr valve, so replaced it, and both gaskets but, the code is still there,i reset the co… read more
Steve7654
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service engine soon..egr valve..scanner..vacuum hose at the map sensor
I have a service engine soon code P0401 and that is egr insufficent flow. I have replaced the egr valve but still the code comes on, even after clearing the code with a scanner. I tried checking the v… read more
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GM Tech (Cam)

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