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1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
02-25-2011, 11:07 AM
Post: #11
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
Was there any other clues like the smell? Plastic, (wires burning), oil, (spilled on exhaust), sweet to burnt hair, (anti-freeze.) On a major job it's not uncommon to have some spillage that will result in "burn off."

Other clues like a warning light on in the dash, Headlights or Taillights that don't work. Could be another indication of a pinched or shorted wire.

Also, small leaks on the exhaust can cause a lot of smoke but won't show up on the dipstick for quite a while. You could go around the block a couple of times to warm it up then park over a clean piece of cardboard to see if there are any drips, what they are, & where they are.

Hope that helps. Garner

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Garner

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02-25-2011, 11:29 AM
Post: #12
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
It could just be residue from greasy hands doing the assembly work or it may be such a small leak it's not reaching the ground. What I would do is drive it normally for a few days and see if it clears up or look again for the tell-tale leak. Worst case is you may need to clean everything to pin point the leak.

You should also double check to be sure both axels are fully seated into the dif. If they are not ALL the way in they can throw oil on the hot exhaust and potentially do damage to the trany.

Keep us in the loop.
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02-25-2011, 09:49 PM
Post: #13
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
(02-25-2011 11:07 AM)Garner Wrote:  Was there any other clues like the smell? Plastic, (wires burning), oil, (spilled on exhaust), sweet to burnt hair, (anti-freeze.) On a major job it's not uncommon to have some spillage that will result in "burn off."

Other clues like a warning light on in the dash, Headlights or Taillights that don't work. Could be another indication of a pinched or shorted wire.

Also, small leaks on the exhaust can cause a lot of smoke but won't show up on the dipstick for quite a while. You could go around the block a couple of times to warm it up then park over a clean piece of cardboard to see if there are any drips, what they are, & where they are.

Hope that helps. Garner

I'll tripple check, but I found no leaks, and all my wires are clear and everything electrical is in working order.
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02-25-2011, 10:18 PM
Post: #14
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
One other thing that just came to mind seeing as this was a long term project. Did some critters find their way into a nesting spot under the car someplace and fill it up with odds & ends?

I have run into the smell of roasting nuts, smoldering leaves, burnt grass, toasting dog food, simmering bird feed, and other stuff I could not quite put a finger on till I found a nest tucked into a rear exhaust manifold or on top of a heat shield.
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02-25-2011, 10:23 PM
Post: #15
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
Reading back over the posts, you seen the smoke after driving around without the hold down on the oil pump dummy shaft cover. If some motor oil leaked out of there could that have gotten onto the exhaust? I'm thinking that it would and it only takes a couple of drops to produce a lot of smoke.
Has it stopped smoking since you put that hold down in place?
Also remember what Rupe said about just a greasy hand print on the exhaust can produce a lot of smoke.

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Garner

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02-25-2011, 11:18 PM
Post: #16
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
(02-25-2011 10:23 PM)Garner Wrote:  Reading back over the posts, you seen the smoke after driving around without the hold down on the oil pump dummy shaft cover. If some motor oil leaked out of there could that have gotten onto the exhaust? I'm thinking that it would and it only takes a couple of drops to produce a lot of smoke.
Has it stopped smoking since you put that hold down in place?
Also remember what Rupe said about just a greasy hand print on the exhaust can produce a lot of smoke.
I didn't drive it till I put the clamp on, but I did start it up a few times before I got the clamp in place, I have looked all over for nesting or hidden objects getting packed in places, there's nothing like that around in it. I'm taking all these ideas into consideration, and wondering about all that you and Rupe said about oily or greasy hands, my biggest worry is if it could be the Torque converter. I did notice a very small amount of smoke faintly coming out of the Transmission dipstick hole, is that to be expected on the first trial drive?
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02-25-2011, 11:22 PM
Post: #17
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
There should be no smoke but possibly vapor as the the air in the system purges and settles down. If it was "smoke" there would be a burning smell, although that might be hard to sniff out (pun intended) with other odors in the air at the moment.

If everything else seems normal then take it for another ride and see if things calm down afterward.
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02-26-2011, 01:03 AM
Post: #18
RE: 1993 Olds Cutlass Supreme 3100 W/ 4t60e Fwd Automatic, Central U.S.
ok, thanks Rupe, I'll do that first thing tomorrow and let you all know what I find out.
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