- #47 of 54
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Re: Rough 1-2 upshift when car is hot [gonogo]
by zjim
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Aug 20, 2007 (9:04 am)
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Replying to: gonogo (Aug 20, 2007 7:51 am)
The problem is that I'm not getting any check engine light. I believe that for a code to store, a light must be on for a number of seconds to record the code in memory, but I'll ask. I'm going to try to be there when they drain the trans fluid. I want to see and smell to see if there is any indication of burned clutches. I would think that if it was a clutch pack problem the fluid would be really filthy, with a lot of metal metallic pigment in the fluid. If that's the case, it's time to trade or face a $2000 repair bill on a $3000 car.
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- #48 of 54
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Re: Rough 1-2 upshift when car is hot [zjim]
by gonogo
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Aug 21, 2007 (9:10 am)
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Replying to: zjim (Aug 20, 2007 9:04 am)
All codes don't set a light, people think you always need a light.
What I was thinking of was Code P01870, worn valve body, but that is just a guess.
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- #49 of 54
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Re: Rough 1-2 upshift when car is hot [gonogo]
by zjim
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Aug 31, 2007 (5:14 pm)
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Replying to: gonogo (Aug 21, 2007 9:10 am)
If it was a worn valve body, wouldn't it act the same way whether the car was cold or warm? The car shifts great until the temp gage gets to it's normal position. Anybody else have any similar experience?
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- #50 of 54
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Re: Rough 1-2 upshift when car is hot [zjim]
by gonogo
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Sep 01, 2007 (8:38 am)
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Replying to: zjim (Aug 31, 2007 5:14 pm)
No, the key to worn valve body is it will malfunction when hot, and ok when cold. Transmission fluid has more resistance when cold, get it hot and it will pass through a small opening at high volume causing pressure loss. A worn valve in the valve body is such a small opening.
Take it to a good independent transmission shop for a diagnosis, a chain shop will just sell you a rebuilt transmission. Good Luck
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- #51 of 54
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Re: Rough 1-2 upshift when car is hot [gonogo]
by zjim
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Sep 21, 2007 (4:30 pm)
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Replying to: gonogo (Sep 01, 2007 8:38 am)
When the car is hot, I avoid accelerating too rapidly until the car shifts to 2nd gear. What is the risk of just driving car, as is. When ambient temps are down, the car performs mostly normal. With winter coming, I doubt that the problem will be very serious. In all my years of being an auto enthusiast, I've never heard of a "worn" valve body. The only problems with the valve body is when fluid is not change and varnish begins to deposit in the valve body, causing the valves to act sluggisly, effecting the crispness of the shift. The cure for those problems was to change the fluid and add one of the name brand transmission fluid conditioners. That usually improved trans performance. If, in fact, there is wear in the valve body, I would think that just replacing the body would do the trick.
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- #52 of 54
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Re: Rough 1-2 upshift when car is hot [zjim]
by gonogo
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Sep 22, 2007 (7:52 am)
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Replying to: zjim (Sep 21, 2007 4:30 pm)
The hard shifts are not good for the transmission. If it is in fact a worn valve body, it can overheat the trans and burn it up, the converter will turn blue from heat.
Just recently I saw a post from a long time trans. Tech, he now states the cause of the worn valve body housing is a worn oil pump stator bushing. No enough oil getting to the valve body, I am going to follow up on that.
Like I stated before only a good independent trans. Tech can diagnosis your problem. A lot of things in the trans have changed since the OD units were installed, a whole lot of new problems.
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- #53 of 54
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Re: Either a transmission problem or a gear problem [umccki]
by lileisme21
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Oct 15, 2007 (8:43 pm)
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Replying to: umccki (Apr 13, 2007 8:29 am)
Hey, I saw your post about your 2006 malibu that was/is having transmission problems, and I had the same problem today. I bought my 2006 Malibu 4-cylinder about 3 weeks ago. The transmission and everything has been great. I just had the dealer inspection done and they said nothing was wrong with it. But today on the way back from the store ... my car seem to be stuck in the 1st or 2nd gear. I'm unsure because it sounded like it would go to second and stay but it was a very quiet shift.. if it even was one. Well it would rev up to 3000rpms and just stay there and not go more than 30-35 mph. I almost got rear ended several times. I was at a stoplight and I threw it into park and put it back into drive and I didn't have the problem anymore. I also found that if I hit the brake and release my foot abrubtly as if I was trying to "pop" the clutch (although it is an automatic tranny, but just an example) it would shift into the next gear and I'd be fine til I had to stop and go again. I just bought this car and I don't want to deal with problems already when I haven't even made the first car payment. So, if you have found out what it was that was causing this problem. I would GREATLY appreciate your advice and help. I don't have a warranty so I want to make sure I know the problem going into the mechanic instead of having them search for the problem and make me pay 8372937 dollars and end up not finding anything. I only had it that one drive home today and it works normally now. So, I don't get it and who knows if or when it will happen again. And I also noticed, like you, that it seemed to do it on hills the most. And my drive home when it was acting up was always on hills starting up from idle. It really isn't safe. So, PLEASE help me out if you've found out what it is. I thought maybe the transmission fluid was low and it was going back cuz I was on a hill and not lubing up the gears enabling them to shift, but I'm not sure because I can't check the fluid on my car cuz it's sealed. So, anyways if you know of ANY solutions or answers email me at lileisme21 yahoo.com Thanks again. Hope to hear back from you soon.
Eric in Rockford, Illinois
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- #54 of 54
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Re: Either a transmission problem or a gear problem [lileisme21]
by sbbowtie32
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Apr 22, 2008 (10:09 am)
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Replying to: lileisme21 (Oct 15, 2007 8:43 pm)
i got same problem with my 2001 malibu, what did u do to fix yours, can u please share your info with me, thanks..(ps) i got yahoo also, and the yahoo name is vdt33, incase i instant message u, thanks
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