I had ping, knock, slap....whatever you want to call it...from day one. I think I have finally gotten rid of it, at least for now. Here is what I did:
Cleaned air filter (again)
Relocated ground strap from the firewall to the power steering resevoir mount
Disconnected battery, both terminals, for about an hour
I then took it on the road and repeatedly put it under heavy load to where it used to sound like it was going to fly apart (4200 rpm). At first I had a little bit of noise but it has smoothed out significantly. Ive been running midgrade gas. I had tried premium, additives, mid with no success before, but havent tried regular yet. I did this about 2 weeks ago and its still running well with no ping, knock, slap....whatever you want to call it under load. I dont know which one of the above things did it, and really don't care. I'm just happy that this problem is finally gone!
__________________
2003 Phantom Gray Pearl stepside TRD SPORT access cab, borla air filter, factory borla cat back performance dual exhaust, under rail bed liner, roll and lock bed cover (s/n 001!) skid plates, tow package, champion step boards, enkie 20" deep six rims, Fuzion ZR1 P275/45R20 low profile performance tires, TRD 3rd brake light cover, OBX sport pedals, sirius satelite radio, Custom Sports Grill, Laurence power slider, Muth signal mirrors with brake kit,Infinity 6010cs front speakers
_____________________________________________
I wonder if anyone has tried a professional fuel injection cleaning to rid this problem? Since for some, this problem goes away temporarily with additives.
Some people live an entire lifetime and wonder if they have ever made a difference in the world, but the Marines don’t have that problem. —President Ronald Reagan
I had ping, knock, slap....whatever you want to call it...from day one. I think I have finally gotten rid of it, at least for now. Here is what I did:
Cleaned air filter (again)
Relocated ground strap from the firewall to the power steering resevoir mount
Disconnected battery, both terminals, for about an hour
I then took it on the road and repeatedly put it under heavy load to where it used to sound like it was going to fly apart (4200 rpm). At first I had a little bit of noise but it has smoothed out significantly. Ive been running midgrade gas. I had tried premium, additives, mid with no success before, but havent tried regular yet. I did this about 2 weeks ago and its still running well with no ping, knock, slap....whatever you want to call it under load. I dont know which one of the above things did it, and really don't care. I'm just happy that this problem is finally gone!
More than likely your fix will work long term as long as you don't use lower grade gas or have excess carbon build up in your engine. Forcing the ecu to relearn the fuel trims by driving it harder usually works well. Anytime I make a change in airflow (air filter change, exhaust mods, etc.) I disconnect the battery to clear the fuel trims. This makes the ecu learn faster than trying to get it to "break it's old habits". The more you baby your engine, the more likely the ecu will start leaning out the fuel trims, so it's advisable to push the engine a little harder to avoid relearning lean fuel trims that will cause pinging.
__________________
2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood
1990 Corolla - cause it was really cheap
i like the idea of cleaning the mass air flow sensor and keeping the carbon deposits off your valves with a decent injector cleaner every third or fourth tank. mine never pings noticably. clean MAF with a couple of quick sprays of electric parts cleaner. use whatever injector cleaner you like.
I have an 04 toyota sienna and it pings terribly when driving slow, I have tried high octane gas and octane booster but notheing works. Have you had your car seen at the dealer?
I had ping, knock, slap....whatever you want to call it...from day one. I think I have finally gotten rid of it, at least for now. Here is what I did:
Cleaned air filter (again)
Relocated ground strap from the firewall to the power steering resevoir mount
Disconnected battery, both terminals, for about an hour
I then took it on the road and repeatedly put it under heavy load to where it used to sound like it was going to fly apart (4200 rpm). At first I had a little bit of noise but it has smoothed out significantly. Ive been running midgrade gas. I had tried premium, additives, mid with no success before, but havent tried regular yet. I did this about 2 weeks ago and its still running well with no ping, knock, slap....whatever you want to call it under load. I dont know which one of the above things did it, and really don't care. I'm just happy that this problem is finally gone!
My guess is that disconnecting the battery for an hour is what really did it. This would be the first thing I would do in a newer vehicle to try to eliminate pinging. Reset the learned behavior of the ECU and let it start over.
__________________
2006 Tundra DC Limited TRD
1987 4Runner with SAS
Re: Valve pinging upon hard acceleration?
Linear Mode
