Where do I find the knock sensor on a 1994 cadillac deville 4.9 engine?

SOURCE: 1994 Cadillac DeVille Concourse - Runs rough?

The "check engine" light will "light" when there is a malfunction in the engine management system. The fault code is then stored in the computer. The computer must be scanned to retrieve these stored faults to pinpoint the malfunctioning component. We recommend buying your own scanner and doing it yourself. With a pocket scanner you can check for fault codes to find out why the light came on in the first place. You can clear your cars trouble codes after you replace the malfunctioning sensors.

SOURCE: Locate O2 Sensors in 1994 Cadillac ElDorado

o2 will not make your car do that you have other issues check for secondary ignition miss or primary ignition miss sounds like you are dropping a cylinder dumping raw fuel to contaminate 02 sensor find the real problem to fix your light

SOURCE: codes po174/171 cadillac deville northstar engine

Check for vacuum leaks around the intake. This is the most common cause for these codes.

SOURCE: 1994 cadillac deville concours

On my car, which is the same as yours, it is located on the manifold top back left. Pictures in the book just show it on top.

SOURCE: where is the knock sensor located

The knock sensor is located under the intake manifold.The starter is also located under the intake manifold.Hope this helps.Good luck.

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