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Recent Catalytic Converter questions

I have a 99 gmc sonoma. 2.2L Manual transmission. When I

I have a 99 gmc sonoma. 2.2L Manual transmission. When I accelerate in first, second and third gear, it the truck bucks like when I first started to learn to drive. It does that when it's going over hills or accelerate. I've changed the fuel filter, fuel pump, spark plugs, wires. What could cause it to buck that bad?JA: Has the clutch been slipping? Are you having any trouble shifting?Customer: NoJA: What year is your Sonoma?Customer: 99JA: Are you hoping to fix this yourself? What have you tried so far?Customer: Yes, I'd like to take care of it myself. I've replaced the fuel filter, fuel pump, spark plugs, wiresJA: Anything else you think the mechanic should know?Customer: It does it when accelerating

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Dan

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I have a 91 Camaro with the tbi 305 ho motor. I just

I have a 91 Camaro with the tbi 305 ho motor. I just installed headers on the engine and removed the air pump system Can I run the catalytic converter without the air pump? will the converter get too hot and burn up? also, I had to remove the evap because the headers wouldn't fit. I removed the box so now I have the two openings on the firewall where the evap box was. My question for that is can I just make a box for the blower motor opening which sits in front of it and close off the opening where the evap sat and still get heat inside the car?

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Super Mechanic

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Pete. next question about the same 89 corvette with idle

Hi pete. next question about the same 89 corvette with idle problems. Im also hearing a clanging sound from under the car when its idling rough. Sounds like someone hitting a tin can or metal garbage can with a drum stick. Any ideas what to look for?

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Ron

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Have a 93 Chevy caprice, I'm getting absolutely no power. t

Have a 93 Chevy caprice, I'm getting absolutely no power. Hit the gas putters then take off takes a few seconds for speed to gain. In last two days I've had the catalytic converter and new wires and new plugs put on at the behest of the mechanic I took it to. But still after that, it still has no power. Barely made it up a hill the other day, they have no clue what the Problem is.... somebody said it might be a sensor in transmission??.

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Tom

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I am trying to locate the egr on a 2002 chevy astro 4.3L

I am trying to locate the egr on a 2002 chevy astro 4.3L engineJA: How many miles are on the car? Is it an automatic or a manual transmission?Customer: 136k automaticJA: Are you hoping to fix this yourself? What have you tried so far?Customer: myselfJA: Anything else you think the mechanic should know?Customer: distributer, coil wires plugs catalytic converter O2 sensors maf .. still has code p0300 originally po305JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.

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Gary

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99 silverado 2500 hd 6.0 has two issues. time the check

99 silverado 2500 hd 6.0 has two issues. For a long time the check engine light would come on and go off. Code PO157. Changed Sensor 2 position 2 and will last maybe 10000 miles and light on again. Today the engine started stalling and laying down when i accelerate . At freeway speeds it started laying down so bad I was worried might not get home. Then began to smooth out. Any Ideas??JA: Does the engine turn over? How old is the battery?Customer: New Batter 1 month and engine starts right up.JA: Are you hoping to fix this yourself? What have you tried so far?Customer: Replaced Plugs ( Iridum Delco ) and new wires ( Delco). no improvement.JA: Anything else you think the mechanic should know?Customer: 150000 miles and just got it out of the shop last week for a Transmission rebuild. Ran great coming home.JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.

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Dan

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I have a 2002 chevy prizm. I have to keep foot on gas to

i have a 2002 chevy prizm. I have to keep foot on gas to keep it running. Now when i put it in gear it bogs down and stalls. Did it last week one time then ran ok for a few days. Now it's doing it again.

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Pete

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I have a 2004 Silverado 2500HD that flashes the check engine

I have a 2004 Silverado 2500HD that flashes the check engine light after going uphill. There are no stored codes. It will then idle very roughly. If I turn the engine off for thirty seconds or so, it starts and runs fine until I go up another hill. Coils, fuel injectors, intake manifold gaskets, and pcm have been replaced as well as two faulty oxygen sensors have been replaced. Fuel pressure tested at 50psi with ignition on, and 58psi running. Maf sensor has been cleaned. The truck has 250K miles on it. The heads were rebuilt at 160k by the previous owner. I've heard of intermittently failing fuel pumps, but I'm not sure where to go from here.

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Juan Crespo

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Ok, 2009 Tahoe with PO 101, PO172/175 errors still after

Ok, 2009 Tahoe with PO 101, PO172/175 errors still after replacing plugs, wires, Mass air flow sensor, map sensor, cleaning the throttle body last few months. 2015 a dealer replaced the ecm and fuel pump module. The only thing not stock is the air intake has a K&N type for better air flow. Tired of replacing parts. Vehicle runs for about 2 or 3 weeks after parts changes and then error codes.Mike

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Pete

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