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Old 01-30-2006, 12:14 AM   #1
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Default Tranny acting up..

Today while cruising down the highway at 78mph with the cruise on, the car suddenly reved up. When i looked at the tac it was at 5500. After kicking off the cruise it went back to a normal rpm and I pulled over. When i pulled over and opened the hood there was a could of smoke that came up from under the hood. It smelled like burnt oil or tranny fluid. Not sure where it came from exacly...

After looking around i couldn't see any fluid leaking out anywhere, the trans fluid was full, but it was clear. I checked it a few weeks ago while i was changing my oil and it was the normal reddish color. The fluid smelled weird also. It did not smell like it was burnt, but it did not smell normal.

I looked around for a while and could see anything wrong. I got back on the highway and drove the 2 more hours back home and no more problems, the trans shifted normal and was not slipping. I am thinking it might be something electrical. If felt like the car just shifted into neutral not like it was slipping.

I think its time for me to clean the maf again also cause the tach was bouncing up and down a bit and starting to surge.
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Old 01-30-2006, 05:25 AM   #2
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Default Re: Tranny acting up..

[quote="speedin"] If felt like the car just shifted into neutral not like it was slipping.
quote]

I don't know if this helps (I'm not that experienced) but once I came across such thing:

http://auto.consumerguide.com/Auto/U...iewreliability

"Automatic transmission: 4T60E transmissions may drop out of drive while cruising; shift erratically; or have no second, third, or fourth gear because of a bad ground connection for the shift solenoids. (1992-94)"


shouldn't be your problem (92-94), but:


"Automatic transmission: The 4T60E automatic transmission can suddenly go into neutral at highway speeds due to a problem with internal shift valves. (1995-97)"

P'haps someone with more experience can confirm this.
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Old 01-30-2006, 09:43 AM   #3
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Default Re: Tranny acting up..

Quote:
Originally Posted by ttl
http://auto.consumerguide.com/Auto/U...iewreliability

"Automatic transmission: 4T60E transmissions may drop out of drive while cruising; shift erratically; or have no second, third, or fourth gear because of a bad ground connection for the shift solenoids. (1992-94)"


shouldn't be your problem (92-94), but:


"Automatic transmission: The 4T60E automatic transmission can suddenly go into neutral at highway speeds due to a problem with internal shift valves. (1995-97)"

P'haps someone with more experience can confirm this.
Never heard of it. I've not seen any of those problems on this forum before. I have no idea where they get their information. Besides, he doesn't have a 4T60. He should have a 4T65.

When you say it smells funny and is CLEAR......you mean it'* not reddish/pinkish any more?
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Old 01-30-2006, 09:57 AM   #4
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Default Re: Tranny acting up..

Quote:
Originally Posted by willwren
Never heard of it. I've not seen any of those problems on this forum before. I have no idea where they get their information.

dunno. I was once looking for any info on bonneville and I found it.

Quote:
Originally Posted by willwren
Besides, he doesn't have a 4T60. He should have a 4T65.
Thought so. But this is originally quoted from that webpage .
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Old 01-30-2006, 11:35 AM   #5
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Isn't the 97 bonne the last year for the 4t60 in the non supercharged models?

BONNEVILLE 95-97 4 SP FWD V6 3.8L 4T60E
BONNEVILLE 97 4 SP FWD V6 3.8L SC 4T65E SUPERCHARGED
BONNEVILLE 98-03 4 SP FWD V6 3.8L/3.8L SC 4T65E

Quote:
When you say it smells funny and is CLEAR......you mean it'* not reddish/pinkish any more?
Yes, the fluid was more of a light brownish color.
but three weeks ago it was nice and reddish/pinkish, but that was 2500 miles ago..[/quote]
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Old 01-30-2006, 01:11 PM   #6
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Get under your trans and read the pan. 97 was a mixed year of 60/65'* in the L36 cars.

That'* a drastic change in fluid in that short a period of time, in spite of the miles.

You have issues. If it'* a 4T65E, it might be the typical 4th gear failure based on your symptoms.
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Old 01-30-2006, 01:20 PM   #7
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I've had problems in the future where when i kick it down doing over 35 it tries to shift down into first and misses. It just revs out.

I'll take a peak under the car later on today to see what trans i have.

When i say the fluid was a light brownish color, i shoudl say it had a light brownish tint because there wasn't much color to it. Maybe i can take a pic of it later while i'm on lunch.

Quote:
"Automatic transmission: The 4T60E automatic transmission can suddenly go into neutral at highway speeds due to a problem with internal shift valves. (1995-97)"
This is pretty much how it felt, just like it popped into nuetral and when the cruise was kicked off it went back into gear...[/quote]
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