Some claim they can get to the front knock sensor without remove the intake manifold but I dont see how.. you have to be extremly flexiable hand to get under all the pipe...

Some said they can see the front knock sensor from under the car.. You may want to try it and see at least get idea where it seat and located..

I have replace and upgrade my knocksensor kit cost $75 and I replace it myself..

take me 6 month to get the courage to do it.. take me 2 day. but now look back I could have done it in 5 hours...

the knocksensor hold in place by only 1 bolt in the center of the sensor...

there are 2 sensor 1 for the front and 2 for the back...

many said you can just clean the connector and the problem will go away..


After I replace the new kit it good for 3 week the code 143 come back again and never go away.. so my replacement job was not solve any thing most people think it could be the ECU compute problem....

1. when you remove the intake manifold you need a new gasket
2. I do not need any new injector O-ring dealer said I can clean them up and put some vasiline on the Oring it work fine no leak..

3. But you need the body throatle gasket...

4.. Just mark all the hose line so you remenber what go where..

Yes I said you can do it... just get into it not that complicated as it look..

it was a great learning experience for me... I am very happy to take on the job


good luck let know how it turn out....

my english is poor hope it hepl you in some way....