Question about Chevrolet Blazer

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I went to Midas with a bad catalytic converter on my 98 blazer. Well they put the wronge one on and I had no power beyond half throttle, gas milage dropped bad,engine running to hot cause my tranmision to shift bad, my engine light came on before i got home. Went back 5 months later and he was sorry but order the right catalytic converter and it was the right one this time, but charge me 74.00$,said it was a better converter. Is this right. Jimmie Rankin

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I have no idea, you will need to contact the dept of consumer affairs and file a compaint with them.

Posted on Nov 04, 2008


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Could the wrong engine computer, bad injectors or a bad catalytic converter cause my engine to misfire and the exhaust to turn red hot right behind the catalytic converter???

Red hot is the best clue. I suspect a bad converter. Try disconnecting the converter and run to test. Look inside the converter to see if it is clogged with melted stuff or carbon. Bad gas in tank? How could it possibly run well if this is true? Clean tank and use fresh fuel.

Jan 23, 2015 | Cars & Trucks

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My 94 full size blazer starts and idles fine in park and in neutral. When I put the truck in gear and hit the gas, it'll start, then act like it wants to die. The Catalytic converter is off, I'

yes try getting the fuel pump pressure tested by a mechanic. the other thing it can be is the injectors are plugged try running some lucas fuel system cleaner.

Jan 19, 2013 | Chevrolet 1500 Cars & Trucks

1 Answer

When you push the gas pedal half way the motor wants to smother out we changed the o2 sensor the maf sensor the throttle position sensor and it still does it what can i look for next

Hello: You have spent a lot of time and money already. I would recommend you use a back pressure gage and check for a restricted exhaust system (possibly a plugged catalytic converter) Anything above 1 psi indicates a restricted exhaust. It screws in where the 02 sensor goes in front of the catalytic converter.

Nov 14, 2010 | 2001 Chevrolet Blazer

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Car idles fine but at half throttle and more the

you could have low fuel pressure.your fuel pump out put weak.bad coils causing weak spark or clogged fuel injectors.

Nov 23, 2009 | 1999 Buick Century

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99 saturn lacks power gets worse with trip length also have a broken converter baffel

It sounds like you catalytic converter has gone bad and needs to be replaced. A bad converter can do damage to your engine due to the excessive heat generated and can burn out your exhaust valves in the heads, which would cost you a engine rebuilt. If you take to a reputable muffler shop, like midas or speedy muffler, they can have a look at it for you free of charge and can advise you if your catalytic converter has to be replaced. Good luck and hope this helps. You should notice that you loose more power when the engine has warmed up as the catalytic converter heats up due to the air flow restriction. Good luck and hope this helps.

Oct 27, 2009 | Saturn SL Cars & Trucks

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Loss of power on acelaration

There's a lot on any car that can cause loss in power.
A few of them are:
Mass air Flow sensor
Bad O2 sensors
Old oil or sludged oil
Bad Gas
Clogged catalytic converter
Loss of cylinder pressure or compression

I would start with the cheapest tests/fixes first
oil: if you haven't already and don't know the condition of your oil, change it. If your oil has sludge in it then you could have a leacking head gasket.

Next up, If your gas is bad fill the tank about half way and use lucus oil octane booster, and for a second half a tank pour in some seafoam engine cleaner. It will clean your fueling system, injectors, and pistons/chambers.

If those too don't help: get a compression test on the cylinders. Not expensive to have done, but could be expensive to fix if there is something wrong or the compression is leaking.

Next, go to a muffler shop and have your catalytic converter checked. A clogged or bad Catalytic converter may trap exhaust and keep it from exiting your exhaust system.
While your there you can have your O2 sensors checked.

If all of that is fine, replace the O2 sensors and the Mass air flow sensor. These components control the air fuel ratio. If they are going out your engine won't ever get the right amounts of gas and air to run properly.

It's a lot, but my general rule of thumb for trouble shooting any issue with a car is to start with the cheapest fix and work your way up.

Jun 03, 2009 | Hyundai Motor 2002 Sonata

1 Answer

Check engine light on;engine codes p0420 and p0773

I looked up the codes you posted.
P0420 is showing a bad oxygen sensor on bank #1, the one down by the catalytic converter.
P0773 is an electrical problem with the shift solenoid E.
A bad oxygen sensor would cause lower fuel milage.

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1 Answer

Really bad gas milage

The 93-94-95 all have this problem ..the fuel line that come into the back do split and leak ..other problem is with vaccum lines coming off the back of intake and vacuum lines come apart from a 3 way fitting.located fire wall .when these are off will cause gas smell and bad millage .... hopes this helps...

Dec 10, 2008 | 1994 Chevrolet S-10 Blazer

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