2000 engine knock-ping

From 2003 Workshp Manual:

Component Description NFEC0932 The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.

During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM.

At starting

During warm-up

At idle

At low battery voltage

During acceleration The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.

Al Moodie.

get the ECU codes read.

could well be a failed knock sensor.

and how did you have the throttle body cleaned? If you did not have it done using the specific highly specialized solvents, you may have FUd that up.

On other forums folks have complained about this same issue. Solution was the MAF.

-- Message posted using

Possible failing MAF sensor ,,,,will lean out the engine enough to cause spark know that can not be compensated for by the ecu and knock sensor..soon you should start getting Lean bank 1 or 2 ECU errors.