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Chevrolet Impala Starting/Stalling Problems

45 messages,  Last post on Jan 30, 2013 at 6:14 PM

You are in the Chevrolet Impala Forum.

What is this discussion about? Chevrolet Impala, Sedan

Messages Page 5 of 5

#40 of 45 Re: 2001 chevy impala [giggleface] by cob

Nov 07, 2011 (10:30 am)

Replying to: giggleface (Nov 03, 2011 6:59 am)
My 2004 Impala with 137,000 miles is getting the valve body repaired to fix the 1-2 shift solenoid and the code P1811 hi pressure fixed that causes the trans to shift hard thru all 4 gears. It also need the accumulator piston replaced which causes the vehicle to slam into gear from a stop sign. Total cost is estimated at $1300. The 4T65E transmission is in almost all GM large FWD cars from the late 1990s until now and they still will not take credit for poor engineering and cheap components. There will never be a recall on these because the new GM will blanme it on the old GM(bankrupt) and deny any resposability just like they did on the 2007-2008 impala rear suspension. I hate to put the money into a car but a car that doesn't run right along with $1300 cash will buy you another used car with a whole new set of problems.

#41 of 45 Re: 2001 chevy impala [giggleface] by djolle01

Nov 10, 2011 (10:24 am)

Replying to: giggleface (Nov 03, 2011 6:56 am)
Was having an accelerating problem about 2 years ago, it ended up being a burned out, plugged up catalytic converter and it was throwing the EGR sensor code.

#42 of 45 Re: 2001 chevy impala [dpolite11] by gpaul1

Feb 08, 2012 (5:04 pm)

Replying to: dpolite11 (Oct 24, 2011 11:07 pm)
try your MAF senser that was the prob with my 03 it costs about 610 at a dealer ship but it comes with a 12month 12000 mile waranty

#43 of 45 MISFIRING/STARTING by determinedmom1

Mar 16, 2012 (5:48 pm)

MY HUSBAND HAS BEEN A MECHANIC FOR OVER 40 YRS CERTIFIED....fOR WHAT THAT'S WORTH WITH THIS IMPALA. 2002 3.4 IMPALA..
 
PARTS WE REPLACED:
 
IAC
TPS,
CRANK SENSOR 24X
FUEL PUMP
FUEL INJECTORS (6)
PLUGS/WIRES.
      WE DID A WHOLE TOP END REMAN, THERE IS NO VACUUM LEAKS. THE ENGINE IS RUNNING GREAT AND SOUNDS GREAT ONLY WHEN YOU HOLD THE THROTTLE OPEN. WE ARE STILL GETTING RANDOM MISFIRES AND THAT'S THE ONLY CODE P300. pLEASE HELP IN OVER 3 YEARS I HAVE SPENT OVER 12,000 ON THIS PIECE OF... BUT I NEED THIS VEHICLE, I HAVE TWO HANDICAPPED BOYS THAT NEED TO GET TO THEIR DR.S APPS

#44 of 45 Stalled start, slightly fluctuating rpms, pf420 inefficiency below thresh by ctp2001imp

Jan 30, 2013 (6:07 pm)

Every time I go to start my 2001 Chevrolet Impala, it takes at least three tries before it cranks. its giving me what I remembered being a pf420 code below threshold. I replaced my o2 censor before the cat converter but no cigar. I also believe my alternator is falling behind because the brightness of all of the interior and ext lights fluctuates as well.
 
I was told it was probably a crank sensor but wanted a second opinion before I go spending that money.

#45 of 45 Re: Stalled start, slightly fluctuating rpms, pf420 inefficiency below thresh [ctp2001imp] by nick2006matrix

Jan 30, 2013 (6:14 pm)

Replying to: ctp2001imp (Jan 30, 2013 6:07 pm)
I assume you meant P0420 in your post. I did not see any mention of the crank sensor in this information: http://www.obd-codes.com/p0420
 
They mention a faulty cat or a faulty O2 sensor. The sensor after the cat is reading the same as the sensor before the cat.

Messages Page 5 of 5

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