Pinging - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-09-2004, 08:21 AM   #21
Member
Posts like a V-Tak
 
Join Date: Nov 2003
Location: Cincinnati Ohio
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
BREW is on a distinguished road
Default

Did you try cleaning off the mass air flow sensor'* wire element. If it'* dirty the computer thinks the engine isn't getting much air and it will lean out the gas flow causing a pinging problem.
BREW is offline   Reply With Quote
Old 07-09-2004, 10:01 AM   #22
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2003
Location: Boston Area
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
TelePlayer is on a distinguished road
Default

No I have not yet tried that. In fact I have never had that off, and I don't even know what it looks like on the inside. Question: is there a replaceable gasket under the MAF?
TelePlayer is offline   Reply With Quote
Old 07-09-2004, 10:05 AM   #23
Member
Posts like a V-Tak
 
Join Date: Nov 2003
Location: Cincinnati Ohio
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
BREW is on a distinguished road
Default

No, there'* a o-ring that does not need to be replaced. The MAF sensor is mounted on the front side of the TB and is fastened with three screws.
BREW is offline   Reply With Quote
Old 07-09-2004, 02:55 PM   #24
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Quote:
Originally Posted by TelePlayer
No I have not yet tried that. In fact I have never had that off, and I don't even know what it looks like on the inside. Question: is there a replaceable gasket under the MAF?
No gasket. Just a couple phillips head screws and a connector.

As far as the Actron is concerned, in order to diagnose a problem like yours, you really need the factory service manuals to go along with it. The troubleshooting guides are fantastic, consice, step-by-step procedures. You'll have a nice scantool, but you need to know how to REALLY use it with your particular car/engine.
willwren is offline   Reply With Quote
Old 07-09-2004, 02:56 PM   #25
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2003
Location: Boston Area
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
TelePlayer is on a distinguished road
Default

I wanted to clarify the pinging that I am hearing.

It'* almost always when the TC is locked up.

I usually hear it at about 35 to 40 mph on a level spot. If I have been at that speed for a while and then lightly tap the gas, I will hear it. If I continue light pressure on the gas, the pinging will generally reduce in volume after maybe 2 to 3 seconds, almost like something tries to compensate. (O2 sensor ??????) I don't think the knock sensor has anything to do with that, it should compensate right away. When I finally get my scanner I will be able to tell if I am at full KR when I hear it.

I also hear pinging once in a while right when the TC locks up.
TelePlayer is offline   Reply With Quote
Old 07-09-2004, 03:06 PM   #26
Member
Posts like a V-Tak
 
Join Date: Nov 2003
Location: Cincinnati Ohio
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
BREW is on a distinguished road
Default

I had the same pinging problem with my car a few yesrs ago. I took it to the dealer and several good mechanics and spent several hundred dollars to have it fix. None of them were able to fix the problem. A friend of mine who works on cars for a side job suggested cleaning the MAF sensor. For the price of a Q-tip and some rubbing alcohol I fixed the problem.
BREW is offline   Reply With Quote
Old 07-09-2004, 10:14 PM   #27
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2003
Location: Boston Area
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
TelePlayer is on a distinguished road
Default

But I thought the car used the O2 sensor to adjust the A/F ratio? All these sensors and it still isn't right. I will eventually try your MAF fix, but I want to wait till I have my scanner so I can get some before and after data.
TelePlayer is offline   Reply With Quote
Old 07-09-2004, 10:32 PM   #28
Senior Member
Posts like a Northstar
 
Join Date: Mar 2003
Location: Brewerton NY
Posts: 551
Thanks: 0
Thanked 0 Times in 0 Posts
karfreek is on a distinguished road
Default

My dad is having the same problem in his 96 Park Ave. I am very interested in the outcome of this. He thinks his wires have something to do with it. I changed his plugs last summer with the NGK (Delcos) and it still does it.

jay
karfreek is offline   Reply With Quote
Old 07-09-2004, 10:35 PM   #29
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2003
Location: Boston Area
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
TelePlayer is on a distinguished road
Default

A donation of a couple hundred dollars will hasten the outcome of this repair. I take PayPal.

Just kidding !!

But it'* not his wires.
TelePlayer is offline   Reply With Quote
Old 07-09-2004, 10:44 PM   #30
Senior Member
Posts like a Northstar
 
Join Date: Mar 2003
Location: Brewerton NY
Posts: 551
Thanks: 0
Thanked 0 Times in 0 Posts
karfreek is on a distinguished road
Default

There is a KICK *** article in this months GMHTP that explains what a MAF does. The previous issue had a great article on O2 sensors.

The MAF measures the mass of the air going into the engine and tells the ECM the proper amount of gas for the injectors to fire in. The ECM also uses other sensors within the engine to determine what the EXACT right measurement of fuel should be, if one thing is off, it all goes to hell.

jay
karfreek is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Pinging keeps coming back crzydmnd72 1987-1991 1 09-24-2006 12:01 PM
kr and pinging d.denis 1992-1999 27 06-10-2005 12:55 PM
pinging and engine cutout jaye22 Forced Induction 6 04-20-2005 09:23 PM
Pinging sound before accelation TV_PRO_USMC 1992-1999 3 10-21-2004 04:31 PM
Crazy pinging *updated 5/18/04* Car's gone .... Boosted 1992-1999 19 05-19-2004 03:10 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:43 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.