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Old 02-28-2012, 08:14   #1 (permalink)
TKO
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Engine code, Cat Converter

I had this on again off again engine code when i first bought this car used. and i got the code read, misfire or cat converter. I ruled out misfire because the engine timing is good, and runs very smoothly at all speeds. The people at auto zone said it was the converter. I told them it seems to go away if i fill up the tank and everything. they say that next time i fill up to buy a thing of rubbing alcohol and dump it in. I was told there is oil plugging the converter up. THis worked surprisingly. For aboout a week or two. Now the engine light is back on, should i keep doing the rubbing alcohol thing?
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Old 02-28-2012, 08:22   #2 (permalink)
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Re: Engine code, Cat Converter

" the engine timing is good " doesn't rule out a misfire . Have you checked the condition of plugs / wires ?
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Old 02-28-2012, 08:42   #3 (permalink)
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Re: Engine code, Cat Converter

I was told they were replaced less than 20,000miles ago. I will look at it tonight. But why did the engine light go off after pouring the alcohol in the gas tank?
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Old 02-28-2012, 08:52   #4 (permalink)
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Re: Engine code, Cat Converter

Do you do a lot of short / stop start journeys ? or does the car get a good run ?
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Old 02-28-2012, 13:38   #5 (permalink)
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Re: Engine code, Cat Converter

daily driver. do more highway than city usually.
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Old 02-28-2012, 13:47   #6 (permalink)
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Re: Engine code, Cat Converter

Quote:
Originally Posted by TKO View Post
daily driver. do more highway than city usually.
That rules out another possible cause I was thinking of.
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Old 02-29-2012, 21:39   #7 (permalink)
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Re: Engine code, Cat Converter

so what should i try next?
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Old 03-01-2012, 07:14   #8 (permalink)
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Re: Engine code, Cat Converter

What are the codes you're getting? What engine and year?
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Old 03-01-2012, 18:12   #9 (permalink)
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Re: Engine code, Cat Converter

1999 Mecury Mystique. v6 dohc 2.9l i am pretty sure. I do not have the codes anymore, but when autozone read them the possible causes were misfire, and catalyctic converter
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Old 03-01-2012, 18:24   #10 (permalink)
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Re: Engine code, Cat Converter

I'd get them again and see what we can see.
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