Engine knock 3k RPM

[Supra Saiyan]

Is this the right answer??

Code 52 indicates that a knock sensor went bad or it is no longer getting a signal. If your engine is knocking or pinging the ECU will retard timing on its own to compensate, it WILL NOT throw a light. Plus code 52 puts your car into a safe mode, since the ECU isn't getting a reading from the KS it goes into a safe mode where the timing gets fully retarded to keep ya from detonating and possibly doing damage.

Originally Posted by cre

You need to post in one thread when dealing with multiple problems... they may be related.

Alone this thread is tough... BUT, when added to the code 52 and knocking noise you talk about in your other thread it makes a whole lot more sense.

Do some more research on both code 52 and rod knock and how the ECU reacts to both and you'll find your answer.

[cre]

For the most part. I'm pretty sure it does trigger the check engine light but it's not persistent. It also add a LOT of fuel to the mixture to reduce knock which may cause flooding. The most common cause of the code 52 is deteriorating wiring; Second would be a physically broken sensor connector. The GTE has 2 knock sensors and the GE has one.

Sounds like you've got rod knock too though.

[Supra Saiyan]

Originally Posted by cre

For the most part. I'm pretty sure it does trigger the check engine light but it's not persistent. It also add a LOT of fuel to the mixture to reduce knock which may cause flooding. The most common cause of the code 52 is deteriorating wiring; Second would be a physically broken sensor connector. The GTE has 2 knock sensors and the GE has one.

Sounds like you've got rod knock too though.

Maybe there is some oil im low on too.. I will check it again when im off work. I swear it was fine but found some oil under the hood this morning. Also, my damn radiator cap died.. It was hissing a bit when I got to work and some anti freeze was in the over flow above normal. I think this could be something else. NOT A BHG.. More likely just needed the cap replaced, or the other issues are causing that one..

[Supra Saiyan]

Got rid of the 52.. Now I just get a 51 when I drive. When I am sitting it's just normal.. So I thinking of taking it in to my local shop. I don't wanna get taken.. Any ideas for things to watch out for..

I am thinking I just didn't calibrate it correctly.. I must be a little off. The thing shouldn't be bad but there is that slight chance it is. I bought it from a guy who had it on a working supra he was parting out.. Assuming it was good. I must have just messed up the calibration. I understand that if your even a hair off. It will throw this code..

SO.. MY QUESTION IS...
If I get it calibrated correctly, assuming there are no other issues. The code 51 should go away?

[Sonyps307]

Just loosen The screws on the tps then do the jumper. when it flashes code 51 turn the tps intill the code goes away. Now recheck for codes.

[Supra Saiyan]

Originally Posted by Sonyps307

Just loosen The screws on the tps then do the jumper. when it flashes code 51 turn the tps intill the code goes away. Now recheck for codes.

Can you adjust it with the car running??

[Supra Saiyan]

I tried every adjustment.. I used my volt meter as well after 30mins of adjustments didn't work without it..

So~.. I'm going to get a new one from DriftMotion.... If that won't fix it then there has to be another issue.. ::Sigh::

So for now.. Hurray for shitty gas milage..!

[cre]

Originally Posted by Sonyps307

Just loosen The screws on the tps then do the jumper. when it flashes code 51 turn the tps intill the code goes away. Now recheck for codes.

Not the best way to do this. The specified gap is there for a reason. It's alright to do this for testing purposes but you may have intermittent idle issues.

A code 51 will occur if the A/C is turned on while the diagnostic is running or if you press the throttle too.

Additionally, a bad TPS isn't going to cause the problem you're describing.

[Supra Saiyan]

Originally Posted by cre

Not the best way to do this. The specified gap is there for a reason. It's alright to do this for testing purposes but you may have intermittent idle issues.

A code 51 will occur if the A/C is turned on while the diagnostic is running or if you press the throttle too.

Additionally, a bad TPS isn't going to cause the problem you're describing.

WTF really??!! SHIT I didn't know that! I would press the damn gas and boom 1500rpm and code 51!!! Now i gotta recalibrate it correctly and call it a day. Then find the real issue.. Check the knock sensors and maybe need to do a rebuild.. I mean it only knocks from 2k to 3.5k rpm.. It's not super duper loud like these videos either. Oil is good too. Argh~!

[supraturbo_mk3]

That sounds like your rod is knocking....Time for a 7MGTE!!! lol