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Old 03-21-2011, 07:21 AM
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Re: 1995 Blazer Knock Sensor Location

Quote:
Originally Posted by Scottm69s View Post
Found them both. A little hard to get to but seem to be do-able. From the photos online it looks like just a big socket will take it off. Is that right? or is there a special tool?

The service engine light comes on every now and then but goes off. I have tried to get it scanned but it can't be done on my vehicle - at least through autozone - because of the year and the only place that has done it is a muffler shop that charges $35 each time. The engine has a knock, the emissions are clearly off and it is not the best on gas. Seems like the symptoms of the knock sensor to me.
What was the code no?

Codes do not say replace sensors.

I would test them out before trying to replace them.
With knock sensor problems I usually find more bad wiring or plug ins on them than the sensor being bad.
Get the code and go threw the repair flow chart for the code.
And when scanner is hooked up read out the data in scanner.
Pay close attention to the knock sensor reading.
Let us know what you find there.
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