16-18MPG - i'm stumped/ noises + overdrive hiccups - Page 2 - 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 02-05-2008, 11:51 PM   #11
Member
Posts like a V-Tak
 
Join Date: Jan 2008
Location: Toledo, Ohio
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
hvacguy is on a distinguished road
Default same problem

I have a 95 SE that has the sam bucking problem. It occurs between 45-50 mph while my car is shifting into third. My 95 has the 4t60E in it. I also live in NW ohio and get the same horrible mileage. My dad is an enigineering supervisor at GM powetrain in toledo, and last week he had me bring my car up there for some of the mechanics to scan it. There were no codes set. they both recommended that I get my fluid changed as it has 112,000 miles and has never been changed. Just like you I have the problem occur in drive and overdrive. After they scanned my car my dad took me on a tour of the 4L60E assembly line which electrically operates practically the same as the 4t60e to my knowledge. Let me tell you; they make quality stuff, the cameras that my dad has put on the line can detect almost any imperfection. Im gonna go back when they get the 6 speed line in. Anyways, my dad gave me the tech manual for the 4L60e, and while mechanically it does me no good, it does say that The TPS, MAP, MAF, and coil packs all tell the PCM when to engage tranny solenoids and the TCC engagement. Im not saying that is your problem, but I will be interested to see what you discover...so keep us posted and I'll do the same. Also...what mechanic are you using since we are in the same area?
hvacguy is offline   Reply With Quote
Old 02-06-2008, 12:02 AM   #12
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2005
Location: Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
Arakor is on a distinguished road
Default

Well i'm not technically using him, only took it to him for his opinion. Canfield Auto Repair on 224.

Would you mind doing me a favor? Count your shifts. I am wondering if this problem is preventing our transmissions from going into 4th gear.
Arakor is offline   Reply With Quote
Old 02-06-2008, 01:51 AM   #13
Senior Member
Posts like a Supercharger
 
Join Date: Oct 2006
Location: Alberta, Canada
Posts: 170
Thanks: 0
Thanked 0 Times in 0 Posts
Drunken Sailor is on a distinguished road
Default

That makes no sense about the harmonic balancer. It can't make noise while the engine is off. I think you need a new mechanic; he'* not feeding you much good information lately, by the sounds of it.

It sounds like you might have found your problem with the water pump though. That'* good. The motor mount and bracket does have to come out, but if you unbolt the mount and lift the engine as high as you can, it'* much easier to slip the mount off. Getting the mount out is the hardest part of the job, after that it'* easy. Book time on that water pump is 3.4 hours, I believe, but it'* a gravy job for us techs as you can do it much faster than that, even the first time. Havadder!
Drunken Sailor is offline   Reply With Quote
Old 02-06-2008, 09:29 AM   #14
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2005
Location: Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
Arakor is on a distinguished road
Default

His logic behind it was the rubber would be separated from the pulley. Thus once you shut off the engine and the pulleys begin to come to a stop, part of the pulley would still move, as little as it may be.

However he as wrong about my transmission and seemed clueless to some of my other noises.
Arakor is offline   Reply With Quote
Old 02-08-2008, 01:56 PM   #15
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2005
Location: Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
Arakor is on a distinguished road
Default

Update: The ringing noise was very dominate today so I popped the hood and went to check it out. While hitting the throttle with my hand I listened. It seems to be coming from or atleast near the left wheel well. This is while in drive, park or neutral.

I can easily reproduce the sound now. I hit the gas (usually floor it) for a second and let off. As the RPMs come down you can here the ringing rather well. Any ideas? Flexplate? Something with my suspension?

This noise came about after I did both front struts and my right wheel bearing. I cannot say that that is what caused it as my bad wheel bearing was very loud and may have drowned the ringing out at the time.
Arakor is offline   Reply With Quote
Old 02-09-2008, 01:10 AM   #16
Member
Posts like a V-Tak
 
Join Date: Jan 2008
Location: Toledo, Ohio
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
hvacguy is on a distinguished road
Default checked the gear count

I finally got the opportunity to go over sixty in my car and it did shift into overdrive, it also hesitated while doing this. Im still stumped. btw how did you clean your MAF? as for the ringing i highly doubt it would be your struts. Have yoy checked your ac compressor clutch to make sure its not binding at all....it would be more of a grinding noise if it were, just an idea. In the 92 lesabre i used to have, a couple of the ball bearings fell out of my alternator bearing and it made a heck of a winding/ ringing at higher rpms.
hvacguy is offline   Reply With Quote
Old 12-13-2010, 03:58 PM   #17
Junior Member
 
Join Date: Dec 2010
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
LuckyG is on a distinguished road
Default

If you move the pulley on the alternator and it move about 2/3 of the way it means the rubber on the balancer has broken. Also the pulley should not move without turning over engine by hand, look at the balancer while trying this, if the outside moves and not the inside again the balancer is broken.
Best Regards,
LuckyG
LuckyG is offline   Reply With Quote
Old 12-13-2010, 04:19 PM   #18
Senior Member

True Car Nut
 
sseidriver97's Avatar
 
Join Date: Mar 2010
Location: Portage mi
Posts: 7,124
Thanked 3 Times in 3 Posts
sseidriver97 is on a distinguished road
Default

Thanks for joining and posting and all but if you notice this thread is long dead sense 2008..we still appreciate the input very much so feel free to make an intro thread,,
sseidriver97 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
hiccups omargadea12 1992-1999 6 06-01-2015 10:05 PM
16-18mpg? grandam75 1987-1991 12 03-11-2006 11:58 PM
Better Than 18MPG?????? 93PonchoSSE 1992-1999 17 11-05-2004 10:08 AM
overdrive or not to overdrive duffer26 1992-1999 10 03-13-2004 12:09 AM


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 10:24 PM.


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.