20 Most Recent 1999 Nissan Maxima - Page 6 Questions & Answers

The knock sensor was designed as a listening device for the vehicle's engine. It is used to detect engine noises such as detonation, when fuel ignites in an engine's cylinder, as well as adjusts the ignition timing when the vehicle is being driven. When a knock sensor is not working properly, it may cause permanent engine damage. Therefore, there are various symptoms to aid in recognizing a faulty knock sensor. Check Engine LightEngine Noises Additional SymptomsCareucar

put a new BPT hose vacum line hose.

Vitally

Do you have the special cam sprocket holding tools?

Have it checked by a professional as soon as possible, airbag has a problem wich can be as simple as a short in the wiring or as harmful as the possibility of deploying airbags without any warning. Please take advice.

Check in the under hood fuse box or power distribution box.

Here's a link to your relay.

Could be your neutral safety switch.

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use a 1/4 rachet and socket

Mass airflow sensor.... I need more info to help it could be a number of things incorrect timing fuses

Always under the dash, inside the cabin & hard to get to

thermostat could be stuck open if its a failsafe likeley it is.

it some time is connected to the transmission bolts or side of the engine

Have you checked the fuel pump relay to see if you have power and ground there ?

Can you take out the anti theft fuse out (to disable it) see if it works?

Here's a link,then enlarge to see.

Idle air censor, IAC, or the TPS throttle positioning sensor