"Pinging" sound coming from my car

[BlaqSnake]

I am hearing something that sounds like "pinging" coming from my car above 4500-5000 rpm in third and fourth gear.
Don't really hear it at lesser RPM.

Haven't really tried (or noticed) the sound in first or second gear.

Mods are as follows:
2.76, TR-6 plugs, CAI, Catted X, Stingers and KMS Tune

I have tried filling up with 100 octane, and also put Bob's "conservative" tune in the car. Neither of which has resolved the issue.

Car ran great up until about two weeks ago. I thought it could be bad gas, so I filled up with 8 gallons of 100.
Ran that tank down, and filled up with another 12.7 gallons of 100 tonight.
I always use Shell, Amoco or Mobil 93.

Anybody have any ideas on what could be the problem?

Thanks

Click to read more...

 

[Jimy Bilmo]

dickey through nuts into your intake.

 

[Bob_Kurgan]

did you replace the fuel filter like you were saying??

 

[BlaqSnake]

did you replace the fuel filter like you were saying??

No not yet, hoping to do that later this week.

 

[BlaqSnake]

dickey through nuts into your intake.

Yeah, thanks! :laughing2

 

[about2bite]

You could try your fuel filter, maybe plugs, possibly clean the maf and air filter... Also make sure the heat exchanger pump is flowing. If you can datalog that would help determine the issue as well. I'd take a look at the iat's if the other options don't stop it.

Maybe they filled thier 100 ocatne pumps with 87

Goodluck

 

[BlaqSnake]

You could try your fuel filter, maybe plugs, possibly clean the maf and air filter... Also make sure the heat exchanger pump is flowing.

Thanks man, all those things are on the list to check.

 

[about2bite]

If there is air in the coolant it can cause issues with excessive heat, just in case you have recently had to reaplace the coolant for whatever reason but sometimes the pump doesn't want to cooperate

 

[BlaqSnake]

I haven't replaced the coolant lately, but checking the intercooler is on the top of the list.

Thanks man.

 

[SLASH]

ping is kinda a generic term, is there any way you could post a audio clip dave?

 

[BlaqSnake]

ping is kinda a generic term,

Yeah, I agree, and I'm not 100% sure if the car is detonating or not.
I don't think I would be able to capture the sound. The exhaust and blower wine would probably drown it out.

 

[jaykruger]

Dave I have MAF cleaner you can grab on thursday, you can have it for $100.00

 

[BlaqSnake]

Dave I have MAF cleaner you can grab on thursday, you can have it for $100.00

How bout I borrow it for free? :dancenana:

 

[gnxs]

Also make sure the heat exchanger pump is flowing.

Hmmmm....didn't think of that. Good point and easy to verify.

 

[Bob_Kurgan]

in the program, if the IAT2 get above say 150 degrees, itll pull like 6degrees of timing.. if they get to 200, it pulls like 10+ degrees... The first noticeable thing would be lack of acceleration/power...

 

[Dragon03]

That sucks Dave even though you are a pain in my ass I hope you get it figured out this seems like a hard trouble to find

Good luck ya homo:dancenana:

 

[BlaqSnake]

The first noticeable thing would be lack of acceleration/power...

Yeah, that's the funny thing about this "noise".

The car seems to have all the power it usually has.

 

[Sharkster]

in the program, if the IAT2 get above say 150 degrees, itll pull like 6degrees of timing.. if they get to 200, it pulls like 10+ degrees... The first noticeable thing would be lack of acceleration/power...

Damn I didnt know that

 

[about2bite]

Yep and these cars love timing which is why you should feel a loss of power if the reason you are hearing that pinging noise is due to high iat2 temps, so if you can datalog you can find out what those numbers look like.

But if the car is pinging due to bad fuel the car will not pull timing, it'll just detonate.

 

[BlaqSnake]

Also make sure the heat exchanger pump is flowing.

Well I checked the intercooler pump, and it's working.

Time to check the rest of the stuff.

 

[Tim]

Pinging almost feels like a miss under load when it happens though, at least in my experience. Sounds like your car is pulling fine??

 

[BlaqSnake]

Sounds like your car is pulling fine??

Yeah, it sure seems to be.

 

[Emil]

I think winter gas is probably upon us.
In the past my non-knock sensored cars would tend to ping more in the winter as soon as the changeover would occur.

 

[sonicblue2003]

dam dave that sucks hopefully its nothing major.. goodluck

 

[SICNESS]

dickey through nuts into your intake.

:quote:through:quote:huh?

It drove fine for me today...:alcoholic:clap: