Slight Pinging Normal?
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 798
Likes: 0
From: Manchester NH
Slight Pinging Normal?
With the arrival of cold, dense air, I noticed that I'll get some minor pinging the first time I go WOT after driving normally for several minutes. The pinging is fairly sparse, and only lasts for the first one or two seconds of WOT. If I slow down and hammer it again, I can't reproduce the pinging. I can only reproduce it if I drive normally for several miles. Both oil and coolant are up to temp, but below 200 when this happens, so it's not an engine heat issue. Thi doesn't happen in hotter or more humid air, even with hotter engine temps. The car is making very good power with this air, and I believe this is probably acceptable and normal behavior, but wanted to gather others' thoughts for the heck of it.
Instructor
Joined: Jun 1999
Posts: 212
Likes: 0
From: Alexandria VA
Re: Slight Pinging Normal? (pburant)
there have been a number of threads on this, but for me the bottom line is that it is normal--I have had the symptoms off and on since I got my 98--since it doesn't happen under normal loads, I don't worry about it.
Burning Brakes
Joined: Nov 1999
Posts: 805
Likes: 0
From: Newport Coast, CA USA
Re: Slight Pinging Normal? (pburant)
My car was pinging like crazy. I took it to the dealer and they cleaned the throttle body changed the air filter and the ping went away. Go figure.
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 798
Likes: 0
From: Manchester NH
Re: Slight Pinging Normal? (TeamZ06)
Thanks for the replies, guys!
I have since gotten a chance to chat with my mechanic and he also feels it is normal so long as it's light/sparse and short lived with each occurance.
I have since gotten a chance to chat with my mechanic and he also feels it is normal so long as it's light/sparse and short lived with each occurance.
Race Director
Joined: May 2000
Posts: 14,542
Likes: 5
Re: Slight Pinging Normal? (TeamZ06)
I think there is a TSB for pinging/ignition knock, don't know if it's applicable for your particular situation
I had my 2000 PCM flashed to the newest program and virtually all pinging has been eliminated. Timing and advance curves have recently been reprogrammed by GM.
Insist on it.
[Modified by EHS, 1:32 AM 10/26/2002]
