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2003 Chevrolet Venture

 

Question: KNOCK SENSOR

Question

mary5150, 3.4L V6, Tehama, CA, December 06, 2012, 14:23
 Rookie

HELLO, I NEED HELP WHAT IS A KNOCK SENSOR AN WHAT DOSE IT DO I JUST WANT TO SIT DOWN AN CRY THE OIL PRESSURE DON'T KNOW WHAT TO DO IT USE TO KNOCK A LITTLE WHEN FIRST START VAN UNTIL WARM UP BUT SENSE THE OIL PRESSURE ACTING FUNNY IT KNOCK'S ALL THE TIME IM ON DISABILITY AN CAN'T AFFORD TO TAKE IT IN TO GET HELP SOME OF YOU ANSWERED THIS BUT IT WON'T ALLOW ME TO REPLY BACK I CHECK MY OIL LEVEL AN IT'S FULL WHEN I BOUGHT IT OFF THIS CAR LOT THE VAN NEVER HAD OIL CHANGE OR TRANNY FLUID HAD 179,000 MILE'S ON IT WHEN I GOT IT PEOPLE AT TRANNY PLACE SAID IF THEY KNEW IT WAS AS DARK AS IT WAS WOULDN'T HAVE TOUCHED IT I'M PAYING PAYMENT'S ON IT AN THIS CAR LOT IS A JOKE THANK'S FOR YOUR ANSWERS NOW WHAT IT STOP KNOCKING AN RUNNING FINE AGAIN NOW THE OIL THINGY READ'S 97 I CHECKED FLUID AN IT'S ON THE FULL LINE SO NOW TELL ME WHAT IS WRONG SENSE NOW IT STOPED KNOCKING AN IS RUNNING OK

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  • Answer #1

    pushrod December 06, 2012, 14:29
     Master

    You need another engine and that is all there is to it!!!! Crying aint going to help either.

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    your.mechanic, December 06, 2012, 16:10
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     Master

    Mary thinks if she asks enough...she will get the answer she wants to hear...maybe she will get the right answer for Christmas!

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  • Answer #2

    your.mechanic December 06, 2012, 16:09
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     Master

    MARY, A KNOCK SENSOR SENSES KNOCKS...TO PUT IT MORE TECHNICALLY...THE ENGINE RUNS BETTER AT MORE ADVANCED TIMING UNTIL A CERTAIN POINT...THAT POINT WILL CAUSE ENGINE KNOCK...THE KNOCK SENSOR DETECTS THIS KNOCKING AND RETARDS THE ENGINE TIMING TO ELIMINATE THE KNOCK.....UNFORTUNATELY IN YOUR CASE, THE ENGINE IS KNOCKING DUE TO RUNNING IT WITH LOW OR NO OIL PRESSURE...THIS CAUSED DAMAGE TO THE ENGINE NOW THAT YOU HEAR KNOCKING CONSTANTLY...DISABLED OR NOT, YOU NEEDED TO FIX THAT OIL PRESSURE PROBLEM BEFORE...SO, AFTER FILLING UP WITH OIL, IT RUNS OKAY??? END OF STORY?

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