Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN







2001 Pontiac Grand Prix Trans problem


  Email This Post



raiden22003
Novice

Oct 30, 2010, 1:36 AM

Post #1 of 8 (8633 views)
Shortcut
2001 Pontiac Grand Prix Trans problem Sign In

 I have recently purchaced a 2001 Grand Prix with 148k miles for 500 dollars as a project car not knowing what was wrong with it. Turns out the 3.1 motor had warped heads and water in motor and the motor and would not even turn over with a fully charged battery due to the rust in the piston walls. Around 220 dollars later I have Made all the necessary repairs to the motor and it sounds good but now I have noticed a problem with the transmission. Well the first time I got the motor running I thought I had a bad trans because the car would not move when I put it in any of the gears. It turns out it just takes a little revving and it will catch and feel like it slams into gear. from this point the car seems to run fine and shift into all gears like normal and I can turn off the car and turn it on and it still works normally. Problem is if I don't use the car for a while, say like until the next morning and go to start the car it will do the exact same thing. I have done some research online about what the problem can be but still no luck. I would like to save this transmission if i can. I have thrown enough money at this thing and I was really looking forward to getting 1500 for it with the slick chrome wheels but not with this problem. I hope this fix is not too expensive. Any help would be great.


(This post was edited by raiden22003 on Oct 30, 2010, 1:43 AM)


Sidom
Veteran / Moderator


Oct 30, 2010, 12:15 PM

Post #2 of 8 (8622 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

It sounds like you have some internal problems going on with the trans...

You can try a service and put in a additive that may help the seals a bit... This may make it better or worse, it's a gamble......

I would try TransX but this would be at your own risk.........






__________________________________________________________________________________________



raiden22003
Novice

Oct 31, 2010, 11:06 AM

Post #3 of 8 (8612 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

Well yesterday my brother had problems with his buick century trans. Its the exact same trans and he took it to someone and they added some additives. It only made it worse and it never caught gear after that. His symptoms were bucking and jerking before that. Would a clogged transmission flter cause it to shift hard on initial shift, then run fine after that. Or I was thinking maybe a bad PCS.


Sidom
Veteran / Moderator


Oct 31, 2010, 12:34 PM

Post #4 of 8 (8608 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

It's possible a filter could be causing some of these symptoms. The problem here is if the trany has been neglected to the point where a filter is causing shifting problems, then there is more going on in the trany and it doesn't have long to live.....

If the problems are mechanical & not electrical, using additives is a kill or cure type gamble. I've seen people use some with some good success and I've also seen them take the trany all the way out. Of course with tranys like yours & your brothers, I've seen just a service cause them to completely fail as well. This is why most shops won't service transmissions with shifting problems or burnt fluid.

You have to realize even if the additive helps, you only buying yourself a bit more time.........The days are number for that transmission....






__________________________________________________________________________________________



raiden22003
Novice

Nov 3, 2010, 10:39 AM

Post #5 of 8 (8586 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

Ok maybe it is internal. after looking aroung the internet one guy says "The problem is an internal lip seal to the input clutch, in the input housing. As they get old, they shrink and get hard, therefore, they do not seal to the housing the way they should. This problem will cause the input clutch pressure to bleed off and not apply the clutches. Once the fluid starts to warm up, the seal expands enough to seal and will usually be fine until the fluid is cold again" and sure enough it shifted just fine after I waited about a minute. But if this is true why does it it not shift in any of the gears at all? like reverse, 1st ect. is the input clutch linked with all the other gears?


(This post was edited by raiden22003 on Nov 3, 2010, 10:43 AM)


Hammer Time
Ultimate Carjunky / Moderator


Nov 3, 2010, 10:52 AM

Post #6 of 8 (8581 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

It really doesn't matter what the specific reason is once a transmission starts slipping or not moving when it's full of fluid. The cure is the same, rebuild the transmission.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



bbazookajoe
User

Nov 6, 2010, 6:26 PM

Post #7 of 8 (8571 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In

Since step one is to always eliminate the obvious (and easy repairs),
1) Have you checked the trans fluid level?
Since trans fluid expands when warm (which is why it has to be checked when warm) it's possible it is just once moving but too little when cold.
2) Are you sure the fluid is the right type? I've seen shops and auto parts stores steer people wrong. check with the manufacturer to make sure.
3) I've had excellent luck with Lucas trans additive. I've never used any others. That stuff is thick as molasses. I bought a car with a bad trans that would not move no matter how high it was reved. I poured it in and drove the thing home 50 miles. I drove it for two weeks until a chunk of the spring that broke (the reason it was slipping so bad) worked it's way up past the oil filter and broke the gear in the oil pump.
4) If you do add something, you have to tell the prospective buyer. Karma's a bi!@# if you are.


Hammer Time
Ultimate Carjunky / Moderator


Nov 6, 2010, 6:53 PM

Post #8 of 8 (8567 views)
Shortcut
Re: 2001 Pontiac Grand Prix Trans problem [In reply to] Sign In


Quote
I've had excellent luck with Lucas trans additive. I've never used any others. That stuff is thick as molasses. I bought a car with a bad trans that would not move no matter how high it was reved. I poured it in and drove the thing home 50 miles. I drove it for two weeks until a chunk of the spring that broke (the reason it was slipping so bad) worked it's way up past the oil filter and broke the gear in the oil pump.


There is no such thing as "Mechanic in a Can". You cannot fix anything with chemicals. They are designed to swell all the rubber which just creates another whole set of problems in the future. Fix it right or the cost just goes up when you finally do.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





2001 Pontiac Grand Prix Trans problem


  Email This Post
 
 






Latest Forum Post
Chevron and some other gas stations claim to have superior gasoline. Chevron ha...
2007 pontiac grand am - 30,000 miles - my rear passenger window made noise today...
I have a 2002 lincoln sedan. It has a small nick in the oil pan and was leaking ...
1998 Toyota Rav 4 with 350k A/C would work and then stop working then after car...
2003 hyundia tiburon 4 cylinder 2.0 120,000 miles I had just purchased this car...
Got a little problem. 94 toyota p/up 22re 5spd OB1 computer. Recent IAC(idle air...

Feed Button


Used Car Search
Used Car Price Ranges:
Under $5,000
$20,000
$35,000

$10,000
$25,000
$40,000
$15,000
$30,000
$45,000
Over $45,000
Search used Cars By Manufacturers:
Used Acura
Used Audi
Used BMW
Used Buick
Used Cadillac
Used Chevrolet
Used Chrysler
Used Dodge
Used FIAT
Used Ford
Used GMC

Used Honda
Used Hyundai
Used Infiniti
Used Jaguar
Used Jeep
Used Kia
Used Land Rover
Used Lexus
Used Lincoln
Used Mazda
Used Mercedes-Benz

Used MINI
Used Mitsubishi
Used Nissan
Used Porsche
Used Saab
Used Scion
Used Subaru
Used Suzuki
Used Toyota
Used Volkswagon
Used Volvo
2010 Honda Civic
$15,770
2004 Jeep
$8,991
2012 Mustang
$22,990
1997 Honda Cr-V
$4,490
2010 Toyota Prius
$17,496
2010 BMW 328
$26,980




Automotive Forum Categories
Automotive Repair
Auto Body Repair and Refinishing
AC Auto Repair Help Forum
Automotive Wiring and Electrical

Auto Insurance and Car Financing
Automotive World
Brake Systems
Car Stereo Repair Advice
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair

Steering and Suspension
Tricks of the Trade
General Discussions
Car Shows and Events
The Bargin Bin
Motor Vehicle Inspection
Car Care Tips
Traffic Ticket Help
Car Racing

Gasoline, Motor Oils, Concept Cars
Remote Control Cars and Vehicles
Truck Repair
Truck Repair Advice


Truck Engine Repair
Truck Suspension Repair
Motorcycle Repair
Motorcycle and ATV Repairs

Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Seat Repair
Car Forum Posts - Sitemap


Search for (options) Privacy