2004 Mazda 3 Thermostat removed and knock engine.

2004 MAZDA 3
120,000 MILES • 1.5L • 2WD • AUTOMATIC
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EVOSL
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Recently I ve got some overheating issue and my mechanic has removed the thermostat valve because it was not working properly. He said that it is not necessary to replace it. But after couple of weeks car is having a rough idle, and knock after like 30 mins of it started.Also the check engine bulb comes out. I have done engine tune up, But it didn't work out and still I am having the issue. So will it be the thermostat removal ?
Dec 21, 2014 at 9:39 PM
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HOMER1967
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th car can not run correctly if it does not achieve normal operating temperature,where it can not do without a thermostat.there are many factors that will not even come into play until the car is up to temp.you must replace the thermostat and go from there.
Dec 21, 2014 at 9:45 PM
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EVOSL
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Thank you for the answer, Also I couldn't mentioned that RPM goes below 1000 at that stage.
Dec 21, 2014 at 10:17 PM
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HOMER1967
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you are very welcome.let us know how it does after you put a thermostat in it.
Dec 22, 2014 at 3:49 PM
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EVOSL
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Planning to fix it in the weekend. Sure I am gonna put the result here.
Dec 23, 2014 at 1:56 AM
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HOMER1967
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that's great.
Dec 24, 2014 at 9:01 AM
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EVOSL
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The problem was with one of the coil and spark plugs. Replaced the coil and Spark plug. Problem solved. Thanks Homer1967 .
Jan 12, 2015 at 2:33 AM
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HOMER1967
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I amglad you got it fixed.thanks for letting me know and thank you for choosing 2 car pros.
Jan 12, 2015 at 6:03 AM