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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.

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Old 05-18-2006, 09:10 PM   #1
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I'll start by saying I baby my car. TCC lockup has never been a problem. Always engages. Today I start my car and leave work to head home, and shortly after I get on the highway, which is a decent hill, it didn't engage when it usually did. I took into consideration it would delay since I was going slowly up the hill, but it was taking forever to lock up. When off the hill and on steady road, I was holding 65mph at 2800rpms, it wasn't dropping down to the normal 1900rpms.

So I pull over, stop the car. Check the vac lines (only thing I could think of to physically check). They were fine. I started back up and it was fine. Didn't give me any more problems.

Could this be the beginning of a problem? Just throwing it out there.....
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Old 05-18-2006, 09:12 PM   #2
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Very hard to say Pete. I know mine had VERY slow TCC engagement months before the trans went out..but i had other problems too..
I wouldnt worry much about it unless it continues to do this
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Old 05-18-2006, 10:53 PM   #3
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If my TC goes, or tranny, anytime soon..I'm screwed like a turtle on its back.
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Old 05-19-2006, 08:59 AM   #4
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Originally Posted by bonnie94ssei
If my TC goes, or tranny, anytime soon..I'm screwed like a turtle on its back.
Mmmm me too...lol I felt a hard shift this morning.

Pete...it MIGHT..be that the weather is cooler. Outside temps govern the never shifting for sure, not sure about your year. However it could. When you stopped and looked it over...it warmed up more while you had it off and then it worked fine.
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Old 05-19-2006, 09:36 AM   #5
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Check your thermostat? Has it been replaced in last couple of years? Does the temperature gauge move up like it used to do or does it act differently--in this case creeping up to the final temperature.

The TC lockup (and fourth gear) don't engage until the motor reaches certain temperatures for each to engage.
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Old 05-19-2006, 06:00 PM   #6
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Quote:
Originally Posted by imidazol
Check your thermostat? Has it been replaced in last couple of years? Does the temperature gauge move up like it used to do or does it act differently--in this case creeping up to the final temperature.

The TC lockup (and fourth gear) don't engage until the motor reaches certain temperatures for each to engage.
I changed to a 180* in April. It'* warmed up well. I always let the car warm up a bit before I drive it. At the time I was on a flat road and it wasn't engaging, it definitely was up to normal operating temp. I guess I won't worry too much unless it happens again. I literally drag my butt at the speed limit. I'm not hard on it since i drive so much and I'd burn gas like crazy otherwise.

I do notice that when it engages, I can be at anywhere between 1600-1900 rpms, depending on my speed. So at 45 it locks up and goes down to 1600, very low drone. At 65, it'* always at 1900rpms. It'* consistent at the same speeds, which is good I guess.
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Old 05-20-2006, 12:36 PM   #7
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Quote:
Originally Posted by bonnie94ssei
Quote:
Originally Posted by imidazol
Check your thermostat? Has it been replaced in last couple of years? Does the temperature gauge move up like it used to do or does it act differently--in this case creeping up to the final temperature.

The TC lockup (and fourth gear) don't engage until the motor reaches certain temperatures for each to engage.
I changed to a 180* in April. It'* warmed up well. I always let the car warm up a bit before I drive it. At the time I was on a flat road and it wasn't engaging, it definitely was up to normal operating temp. I guess I won't worry too much unless it happens again. I literally drag my butt at the speed limit. I'm not hard on it since i drive so much and I'd burn gas like crazy otherwise.

I do notice that when it engages, I can be at anywhere between 1600-1900 rpms, depending on my speed. So at 45 it locks up and goes down to 1600, very low drone. At 65, it'* always at 1900rpms. It'* consistent at the same speeds, which is good I guess.
The 94-95 Bonnies are a bit diffrent than the 87-93'*...

It could be 30F and the engine still cold, but if you are that the right road speed for the given conditions, say 65 mph the PCM should have the trans in OD with the TCC applied...

Pete its also possible that you may have a bad or weak spot in the TPS... These cars are very dependant on info from the TPS...

Also did Jim ever replace the O2 in this car?

As you have had no further issues, leave it all alone for time being...

If the problem creeps back up let us know

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Old 05-22-2006, 09:56 AM   #8
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Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by bonnie94ssei
Quote:
Originally Posted by imidazol
Check your thermostat? Has it been replaced in last couple of years? Does the temperature gauge move up like it used to do or does it act differently--in this case creeping up to the final temperature.

The TC lockup (and fourth gear) don't engage until the motor reaches certain temperatures for each to engage.
I changed to a 180* in April. It'* warmed up well. I always let the car warm up a bit before I drive it. At the time I was on a flat road and it wasn't engaging, it definitely was up to normal operating temp. I guess I won't worry too much unless it happens again. I literally drag my butt at the speed limit. I'm not hard on it since i drive so much and I'd burn gas like crazy otherwise.

I do notice that when it engages, I can be at anywhere between 1600-1900 rpms, depending on my speed. So at 45 it locks up and goes down to 1600, very low drone. At 65, it'* always at 1900rpms. It'* consistent at the same speeds, which is good I guess.
The 94-95 Bonnies are a bit diffrent than the 87-93'*...

It could be 30F and the engine still cold, but if you are that the right road speed for the given conditions, say 65 mph the PCM should have the trans in OD with the TCC applied...

Pete its also possible that you may have a bad or weak spot in the TPS... These cars are very dependant on info from the TPS...

Also did Jim ever replace the O2 in this car?

As you have had no further issues, leave it all alone for time being...

If the problem creeps back up let us know
Don, I've read a lot of people replacing their TPS...and it'* something I should look into. I don't know anything about it right now. Ideally I'd like to replace a lot of things, including the Fuel pump, filter, and anything else that could go south due to age, just so I KNOW everything'* good.

I replaced the O2 a week after I got the car

Saturday I thought it was not engaing fast enough.. This morning on the 40 mile trip to work it seemed ok... Except when I first pulled out of my driveway I heard a slight, short 'rattle' a couple times. I only heard these noises from a stop. Hopefully it'* not related.

I checked the fluid after I got to work today and it was perfect. Right now I'm still very worried, but am just babying it as usual. I'll change the tranny filter and fluid asap.

If my TC is going, would I be noticing anything else besides delayed enaging? Like constant rattling noises while driving?
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Old 05-22-2006, 10:20 AM   #9
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There shouldn't be any rattling from the solenoid not working. If you notice delayed engaging... I wouldn't be overly concerned as long as it is consistently engaging.
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Old 05-22-2006, 11:07 AM   #10
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Quote:
Originally Posted by BillBoost37
There shouldn't be any rattling from the solenoid not working. If you notice delayed engaging... I wouldn't be overly concerned as long as it is consistently engaging.
Ok. So far it'* consistent.. I'll keep an eye on it. *wishes he had a tranny temp gauge*
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