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Buick Regal Transmission Problems

79 messages,  Last post on Nov 29, 2009 at 8:01 PM

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What is this discussion about? Buick Regal, Transmission, Sedan

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#70 of 79 Re: 1999 Buick Regal Transmission Problem [blown99gs] by carolyn79 Aug 01, 2009 (8:07 am)
Replying to: blown99gs (Nov 19, 2008 6:01 pm) I know this is an old post but I my 96 buick won't shift up at all. Can you tell me what you did to solve your problem. please. Replies to this message: mbenson242 (Aug 01, 2009 8:36 am)
#71 of 79 Re: 1999 Buick Regal Transmission Problem [carolyn79] by mbenson242 Aug 01, 2009 (8:36 am)
Replying to: carolyn79 (Aug 01, 2009 8:07 am) I have not done anything yet. I was told by a mechanic to change the filter and fluid. After I get a job, I will do this then go from there.
#72 of 79 trac control anti lock service engine soon by cmylse Aug 01, 2009 (8:11 pm)
i just got my front hub bearing replaced and drove for 2 weeks everything fine then out of nowhere my trac light and anti lock and service engine soon light came on does anyone have an idea
#73 of 79 Re: 1999 Buick Regal Transmission Problem [blown99gs] by dan171 Aug 03, 2009 (11:43 am)
Replying to: blown99gs (Nov 19, 2008 6:01 pm) The fix, thanks for all of the input i put it all to use and now have a transmission that shifts smoothly. From what i have learned the shifting in and out of overdrive (locking in and out) is controlled by a solenoid valve. That's an electric valve. The signal to tell the valve to lock in overdrive is sent via wire which gets its signal from several monitoring devices like engine load and vacuum. My regal would jump in and out of overdrive very hard while traveling up a slight incline in cruise. If i stepped on the gas it would accelerate and drop out of overdrive and take off but a smooth acceleration under slightly increasing load was very rough. I did all of the fixes at once $400.00. Changed the fuel filter, changed the spark plug wires, changed the spark plugs that had about an 1/8" gap, and changed 3 or 4 vacuum hoses that were cracked. I didn't think about the air filter or pvc valve. Cheaper than a transmission torque converter and the car needed all of this stuff anyway. dan
#74 of 79 Re: 1999 Buick Regal Transmission Problem [buhog] by jetaway Aug 03, 2009 (10:34 pm)
Replying to: buhog (May 18, 2009 8:14 am) The front seal will cause a fluid leak.The slip and shudder when pulling out in first is most likely a problem with the 1-2 band or the servo piston that operates it.The servo piston is under the round side cover that faces the back of the car.{3 8mm bolts holding cover}.Sometimes the band breaks on one side and partially holds but not enough.Another possible culprit is the low sprag{one way roller clutch}.This would tend to be worse when cold and shudder out would make no difference in this case.
#75 of 79 Transmission Problem? by rforr Sep 12, 2009 (1:34 pm)
Last night I was driving my 98 buick regal and I noticed while I was driving it started to have a slight jolt, then the service engine light came on. I had no idea what was going on, but after driving it for a while I noticed when I kept a steady speed it would be just fine.. after letting off the gas it was jolt just a little. Then as I was coming to a stop, when it hit 3rd gear it started to vibrate and jolt more. When it got to the slowest speed of the 2nd gear the engine dropped below 1000 rpms and it sounded like it was about to quit. Before it could quit it dropped to 1st gear and it was just fine. It idles just fine. Accelerating in 1st gear is normal, when it hits 2nd it acts like its about to quit, but accelerates and jolts real bad. Same in 3rd gear. When it gets to 4th gear it is just fine. Anyone know what might cause that and how I could fix it? I noticed this morning that my transmission fluid is just a little low, but not much.
#76 of 79 I THOUGHT it was the trannie by taomerni Oct 22, 2009 (7:35 pm)
I had the Same symptoms you had .... And my first guess was the trannie .... 115k miles ... No power ... Bogging down , and changing gears at high rmp .... Well I read every post on here including the guy who told me to put new plugs , wires , vacuum hoses, fuel filter ..Etc ... So I spent 150 bucks at Napa and and was just as bad ..Not money wasted as it was due for a tuneup anyways ..Then I explained the symptom to my brother in law ,, and he told me the catalytic converter was plugging .. I remember when CatCo's were big $$$ and I cringed , But I still did not think that was it ,,,, But I didn't rule it out ,,, Took it to my normal shop and I told him the symptoms ,, He said Either the Fuel pump , MAF sensor , or a vacuum leak ,, NO WAY would it be a plugged CAT .. 2 days later I took it to the Local Buick garage to confirm what it could be ,,, Pretty kewl tech guy ,, We test drove it and it started great then went bad on our confirmation ride ... He insisted trannie at first 2 .. But when I restarted the vehicle it would run good for a minute while the system was in closed loop ... Cant be the trannie or it would have no power 5 seconds later .. So after hours of tests he reconfirmed what I had originally thought .. BAD PLUGGED CAT CO ... ..They wanted 500 bucks at the garage and I knew I could buy a new one from Autozone for 200 ... TO make my long story short .. NO power ,,, Weird transmission changes ,,, Talked to my friend at a MUFFLER shop and he told me these cars have a double line pipe going into the CatCo and after a while they crack ... The insulation material goes into the cat and appears to be sand looking after burning ... ... We replaced the catco ,and my 2003 buick regal has the power and trannie of a brand new Buick And a whole lot less than the price of a Fuel pump , Trannie , or a Intake vacuum leak ,,, YES it can be the CATCO ... Don't always listen to the Mechanics ... I am so happy as I didn't buy all the other unneeded parts at a HIGH cost ..I paid my muffler guy 1 hour labor to put it in ... 65 bucks ... Hope I get another 5 years out of my Buick
#77 of 79 Re: Engine shoppong while driving automatically [bitto] by buickregal12 Nov 21, 2009 (10:04 pm)
Replying to: bitto (Jun 29, 2009 4:27 am) my car has also done this. i have the same car buick regal gs 1998. seemed to happen only when moisture was in the air? but idk i have no idea what it is. check how tight your battery cables are on.
#78 of 79 Re: 98 buick regal stops running [sallyspencer] by buickregal12 Nov 21, 2009 (10:28 pm)
Replying to: sallyspencer (Dec 16, 2007 9:16 am) cataylaic converter plugged Replies to this message: taomerni (Nov 29, 2009 8:01 pm)
#79 of 79 Re: 98 buick regal stops running [buickregal12] by taomerni Nov 29, 2009 (8:01 pm)
Replying to: buickregal12 (Nov 21, 2009 10:28 pm) Yep...2 months later getting dang near 30 mpg on the highway .. and NO trannie problems ... Best diagnosis I could have had .....And my oil looks a lot better ..

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