Severe pinging/detonation when cold
Thread Starter
Joined: Dec 2001
Posts: 4,909
Likes: 3
From: Cleveland, OH
Severe pinging/detonation when cold Started a month ago.
If car is cold ( first 5-15 minutes of running ) and I stomp on it, it sounds like popcorn and I go no where. After it's warmed up, it finally behaves like normal. I've had the H/C for 2 years now, nothing like this has ever happened. Could it be one bad tank of gas? Haven't atap'd when cold, but I did 3 runs last week after warmup and LTFT's are 1.3 and O2's are .925
Any ideas?
If car is cold ( first 5-15 minutes of running ) and I stomp on it, it sounds like popcorn and I go no where. After it's warmed up, it finally behaves like normal. I've had the H/C for 2 years now, nothing like this has ever happened. Could it be one bad tank of gas? Haven't atap'd when cold, but I did 3 runs last week after warmup and LTFT's are 1.3 and O2's are .925
Any ideas?
TECH Senior Member
Joined: Nov 2001
Posts: 7,234
Likes: 1
From: Mississauga, Ontario
I'd be more worried if it was detonating when warm. The solution is obvious, just don't beat on the car until it's warmed up. It takes about 15min of driving for your oil to get up to operating temperature anyhow, even though it only takes 5min for your coolant to get there.
