Question about 2001 Chevrolet Impala

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No power under acceleration 2001 chevy impala,ive added injector cleaner , cleaned maf,also checked cat ,seemed good, also replaced map sensor

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Well it is a chevy, its always had that problem. Haha, just kidding. But, seriously, it can be something as simple as a clogged air filter. I did all that you did on a car I had, and then, I replaced the air filter that I thought was good (reusable K&N) and it ended up being that. Try the air filter. Either replace, or clean it.

Posted on Apr 14, 2014

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Posted on Jan 02, 2017

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P0172 and P0175 after replacement of cats and rebuilt injectors


Possible solutions include: Inspect all vacuum and PCV hoses, replace if necessary Clean the MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling Inspect fuel lines for cracks, leaks, or pinches Check the fuel pressure at the fuel rail Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced. Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)

Read more at: http://www.obd-codes.com/p0175
Copyright OBD-Codes.com

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2006 Chevy Colorado 2.8 4 cyl. Engine is surging under normal acceleration. It has about 85K.


Clean the MAF sensor and the throttle body. Plus the Idle air control motor. Use a toothbrush with brake clean. Just spray the MAF with brake clean both ways..

Oct 04, 2014 | 2006 Chevrolet Colorado

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92 jeep wrangler 4 cyl 5 speed skipping and bogging down idling rough replaced fuel pump/filter injector o rings fuel pressure regulator timing chain distributor plugs wires map sensor crank sensor idle...


Have you checked the cam sensor? Also does that vehicle have a "throttle position sensor"? Some cars use both MAP and MAF sensors, not sure about your particular vehicle but if it is one of those, cleaning the MAF wouldn't hurt. Good luck.

Jun 28, 2012 | Cars & Trucks

1 Answer

2001 chevy impala i keep replacing the fuel filter, once 6 months ago, and 2 more times the last 2 weeks, and using injector cleaner, but i still am bucking like a horse and stalling


You need to determine if fuel is your problem-have the pressure tested at the fuel rail to see if it is within specifications with regard to PSI. Once you establish it is good, look for an ignition problem-bad coils, wires, distributor cap (you do not mention which engine you have , the 3.4 or the 3.8)-your problem really sounds like an ignition problem and it could be anything mentioned plus a failing crank sensor or cam sensor-check pressure first to determine if it is good, if so, start with a good tuneup including replacing plugs, the wires and maybe coil packs/distributor cap/rotor, clean the connectors at the crank sensor and cam sensor. Check the connection at the MAP sensor too, you never know...

Jul 07, 2011 | 2001 Chevrolet Impala

1 Answer

'02 impala ls 3.8L. lose all acceleration, at heavy acceleration and/or 4000rpms. then sputters and chugs.


I had the same on my 3.8L 2002 Impala. Right arround 3500-4000rpms with moderate to high acceleration; shaking and bucking. With light acceleration, it seemed OK. And no "check engine" light.
It was the MAF sensor. I ended up replacing it, but it was pretty expensive $150+?
You might try cleaning yours first with MAF spray cleaner.

It is located on the throttle body under the engine cover.
Here is picture of it: http://i2.photobucket.com/albums/y48/ZeeVert/2002%20Impala/ac%20condensor/MAFsensorcopy.jpg
I was working on the a/c so some other parts were removed.

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3 Answers

I have a 2003 chevy impala that bogs down when accelerating. Computer diagnostics are fine. Fuel line pressure test was fine, no gas leaks. No ck engine light on. Need suggestion what to do next. Dad says...


Start with the simple and replace the fuel and air filter, also check the fuel pressure regulator vacuum line and clean the MAF sensor with MAF cleaner. Start with these easy things to check and hope will bring your car back to running 100%.

Dec 11, 2009 | 2003 Chevrolet Impala

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