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Recent Catalytic Converter questions

2006 Malibu only goes 40 mph on the highway starts

2006 Malibu only goes 40 mph on the highway starts clattering in the back after the struggle uphill. After the car is off for half hour the clattering stops. Got car from dealer yesterday.

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Pete

Independent Auto Technician

Vocational, Technical or Trade Scho

20,238 satisfied customers
2012 Camaro SS. What is the procedure for replacing the

2012 Camaro SS. What is the procedure for replacing the front and rear brake rotors/pads. Are there any special tools required?

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david craig

OWNER/MECHANIC

Associates

5,624 satisfied customers
2012 chevy equinox stalls a few seconds after starting.

2012 chevy equinox stalls a few seconds after starting. Error code P0420.JA: Is the check engine light on? Does the car stall at idle or when driving?Customer: Check engine light is on (I get error code P0420). Car stalls before I can even move.JA: Are you fixing your Equinox yourself? What have you tried so far?Customer: Gas was low (1/8 tank) so I put in 3 more gallons. Same problem. Checked to make sure it was getting air. No obstructions. Don't know what to do now...JA: Anything else you want the mechanic to know before I connect you?Customer: Nothing I can think of

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Mike V.

technician

High School or GED

30,594 satisfied customers
I have a 2004 Chevy Classic. The check engine light is

I have a 2004 Chevy Classic. The check engine light is flashing and the car idles rough. I parked the car till it is fixed. I changed the spark plugs and air filter but this has not helped. I am taking shots in the dark. The air filter has oil residue on it so it appears that there is some blow back from the engine. Also, there appears to be oil stains on the engine which appear that oil is being forced out somewhere. Where should I look next?JA: Does the light stay on, or does it blink?Customer: It blinksJA: Are you fixing your Classic yourself? What have you tried so far?Customer: Change spark plugs and air filter.JA: Anything else you want the mechanic to know before I connect you?Customer: That's it.

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david craig

OWNER/MECHANIC

Associates

5,624 satisfied customers
94 Silverado running. I have 5.7 that is running extremely.

94 Silverado running rich. I have 5.7 that is running extremely rich. I only have so much time to troubleshoot it because after 10 minutes or so it completely fouls out all of the plugs. It is flashing OBDI code 33 (Map sensor circuit error and 54 (fuel pump circuit low volage). There is continuity to the MAP sensor and to the Fuel pump relay. There is proper voltage to the fuel pump. I have replaced: the fuel pump, MAP sensor, Oil pressure switch, throttle body and fuel filter without any change. I have checked all wiring. When the truck runs, and runs weak as a dog down the road until the plugs get so fouled the engine does not want to run anymore and wont start.. What am I missing here?

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Pete

Independent Auto Technician

Vocational, Technical or Trade Scho

20,238 satisfied customers
My 2004 avalanche 1500 is only running on one bank of

My 2004 avalanche 1500 is only running on one bank of cylinders the plugs and airfilter were changed recently. This has happened gradually now won't get above 25 mph. What can this?

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1,958 satisfied customers
I've got an old Chevy Lacetti j200 sedan 2006 mileage is

Hi, I've got an old Chevy Lacetti j200 sedan 2006 mileage is around 59030 , I've recently used a soft engine cleaning liquid and changed an engine oil after 150 miles & oil filter, petrol filter, within some time I feel that engine performs slower on low rpms. i.e. if the speed is 20-30 mph & 1200-2000 rpms it feels an unstable work, shaking from time to time, could it be due to the petrol quality (as I used A92 and later A95), does it mean I need an injectors cleaning?About 1000 miles ago I changed a spark plugs but also, an other cause I consider due to HV wires?

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Eric

Retired

N/A

30,378 satisfied customers
2009 cobalt 2.2 P0411. Replaced air pump and check valve.

2009 cobalt 2.2 P0411. Replaced air pump and check valve. Air flow out of valve seems good.JA: Have you checked the fluids recently?Customer: WhyJA: Are you fixing your Cobalt yourself? What have you tried so far?Customer: Yes. Replaced air pump and check valve. Checked air flow out of check valve. Flow seems goodJA: Anything else you want the mechanic to know before I connect you?Customer: No

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Chad Farhat

Owner

Associate Degree

6,520 satisfied customers
The catalytic converter. Is it worth the cost to replace it?

the catalytic converter. Is it worth the cost to replace it?JA: Has the vehicle been "scoped out"?Customer: I don't understand "scoped out"JA: What is the model/year of your Chevy?Customer: 1996 1500 chevy vanJA: Anything else you want the mechanic to know before I connect you?Customer: no

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Ron Z.

Vocational, Technical or Trade Scho

24,542 satisfied customers
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