'90 Vette "pinging" when hot
Thread Starter
Drifting
Joined: Feb 2005
Posts: 1,438
Likes: 2
From: Melrose Florida
'90 Vette "pinging" when hot
I'm a C3 guy, posting for a friend. PM or reply to this thread, thanks.
My friend has a '90, bone stock except for no catalytic converters. Low miles, excellent maintenance, premium gas (93 octane).
He mentioned that whenever the temp gauge shows above 220, typically when idling at a stop light or during a parade, if he accelerates there is a lot of "pinging". Not a problem any other times, and I gather that the car isn't overheating, my understanding is that the newer vettes typically operate above 220.
Is this a common problem; and/or is there a simple fix...adjusting/replacing a sensor or switch, changing cooling components, computer settings?
Thanks in advance,
Steve
My friend has a '90, bone stock except for no catalytic converters. Low miles, excellent maintenance, premium gas (93 octane).
He mentioned that whenever the temp gauge shows above 220, typically when idling at a stop light or during a parade, if he accelerates there is a lot of "pinging". Not a problem any other times, and I gather that the car isn't overheating, my understanding is that the newer vettes typically operate above 220.
Is this a common problem; and/or is there a simple fix...adjusting/replacing a sensor or switch, changing cooling components, computer settings?
Thanks in advance,
Steve
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
You should NOT hear ping. Even it it start detonate, the knok sensor should send this information to the ecm . The ecm remove timing .
The ecm is able to remove up to 20 deg of timing!
Probably the KS is inoperative.
The ecm is able to remove up to 20 deg of timing!
Probably the KS is inoperative.
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