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My car has been misfiring which is more like stuttering. It happens only when I am accelerating (not in idle) and more often when I accelerate on a gear at low RPMs. My catalytic is completely shattered. Anyone recognize these symptoms? I am leaning towards a clogged up exhaust due to the bad cat but I want to hear more opinions because if it is the cat I cannot do anything for about 2 months.
An electric or fuel problem would cause misfire even at idle right? By the way the car has a new air filter.
Just my guess, try running seafoam. My buddies s10 was doing that we ran seafoam thinking the engine was gunked up (210,000miles) and he says it runs like a new truck now.
Worse case senaro, seafoam doesn't work and you'll be out 5 or 6 bucks, but at least you'll have a clean engine.
I think it's weird the SES light doesn't come on though, if your getting misfires it should throw a code of some sort.
Originally posted by Merlin: My car has been misfiring which is more like stuttering. It happens only when I am accelerating (not in idle) and more often when I accelerate on a gear at low RPMs. My catalytic is completely shattered. Anyone recognize these symptoms? I am leaning towards a clogged up exhaust due to the bad cat but I want to hear more opinions because if it is the cat I cannot do anything for about 2 months.
An electric or fuel problem would cause misfire even at idle right? By the way the car has a new air filter.
Thanks
sounds exactly like what my car is doing. no SES light either. My cat is fine and a mechanic said my plugs and wires were fine too. I just can't seem to figure out what the problem is. I switched from 87 to 89 octain gas and it seemed to help some.
\'98 3.8L m5<br /><br />whisper lid<br />SLP CAI <br />lsd <br />3.73 gears <br />Flowmaster American Thunder catback exhaust
Originally posted by stealth1281: </font><blockquote>quote:</font><hr />Originally posted by Merlin: My car has been misfiring which is more like stuttering. It happens only when I am accelerating (not in idle) and more often when I accelerate on a gear at low RPMs. My catalytic is completely shattered. Anyone recognize these symptoms? I am leaning towards a clogged up exhaust due to the bad cat but I want to hear more opinions because if it is the cat I cannot do anything for about 2 months.
An electric or fuel problem would cause misfire even at idle right? By the way the car has a new air filter.
Thanks
sounds exactly like what my car is doing. no SES light either. My cat is fine and a mechanic said my plugs and wires were fine too. I just can't seem to figure out what the problem is. I switched from 87 to 89 octain gas and it seemed to help some. </font>[/QUOTE]Have you tried checking the fuel system? filter, etc? I am not sure if SES would come on or not but it is worth the try. Maybe the air filter too?
Mine is a really noticeable misfire like the engine completely chokes. In fact I cannot even burn my tires anymore. But it is not a persistent misfire, it happens only every now and then when accelerating. I am 99% sure it is the cat, but I wanted to hear other opinions. I think pieces of the cat may have fallen into the resonator that comes with the Flowmaster catback.
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3 weeks ago
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