maxima 95 knock sensor and EGR Control (EGRC)-Solenoid Valve

I don't have my manual handy, but generally when knock sensor appears with other codes, repair the other one first, clear codes, and only treat knock sensor code if it appears alone.

Dave

I just sold my 95 Maxima and I had to replace the knock sensor and oxygen sensors. Mi Maxima had 153K miles on it. These parts were pretty expensive and everyone I talked to said to use dealer parts. I didn't experience any overheating like you mention, but the check engine light came on and I received the codes for those parts. Once I replaces those parts, reset the computer and replaced a burned out fuse for the O2 sensors, the check engine light stayed off. This leads me to believe the codes are correct. If one of the codes you mention relate to the overheating problem, my guess would be the EGR Control Solenoid Valve. The knock sensor had failed in my car for a month before I replaced it.

If you regularly experience high temp and then sudden cooling, it could be your water temp thermostat.

Good luck.

1. Where did the original coolant go?
2. The knock sensor code may have been stored in the ECU for a while (it alone does not set the check engine light).
3. Fix the EGR-related problem first, reset the ECU, drive around and see if the knock sensor code is reposted (again the CEL will not be set by just a faulty knock sensor - but when you check for codes, you will get the KS code).

Nirav

96 Max GLE, 111k

In an earlier post, I reported that my Check Engine Light (CEL) came on, and when I checked the codes, they indicated the engine coolant temperature sensor (ECTS) and the knock sensor. I cleared the codes, and about 10 days later, the CEL came on again with the same codes. I have an appointment with the dealer on Friday. Should I have them only work on the ECTS, and wait to see if the knock sensor code reappears, or do both sensors at once?

The knock sensor does not turn on the light unless there is some other problem as well. If you just fix the ECTS, you will never know if the knock sensor code comes back.

On 11/10/04 11:09 PM, in article GuCkd.324889$wV.184342@attbi_s54, "HoCo @comcast.net>" In an earlier post, I reported that my Check Engine Light (CEL) came on, and

I don't know how much of a DIY'er you are - but you can do the ECTS replacement yourself quite easily - the part will run you under $30. If you do the ECTS yourself, then just wait to see if the knock sensor code reappears.... if you take it to the dealer - its really up to you whether you have them replace the KS at the same time- be warned, the book rate to replace a knock sensor is not small change.

Nirav

96 Max GLE, 111k

Thanks for your feedback. Is it hard to replace the EGRC Solenoid Valve? Or should I have an auto place do it?

I suggest NEVER paying book rate to replace the knock sensor. 14" long

1/4" drive extension on a 12mm flex-head socket did the trick for me. Literally a 10min job when you get the hang of it. If you're not a DIYer and no garages are willing to do it for less than book rate, I recommend finding a someone who does do DIY car stuff and paying them a case of beer.

The thought of doing it the hard way (or worse, paying for it) makes me nauseous.

Dave

i replaced the Control Solenoid and both codes went away. Thanks everyone for your help.