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Car Forum / Pontiac / Pontiac Cars / September 2006transmission problems
I've had an 1987 bonneville (3.8) that's been almost not worth the trouble if i didn't love it too much. The problem started when my radiator blew. I replaced it as well as the water pump since the last time the radiator overheated it busted the water pump as well. It drives well for the first week or so but then the automatic transmission would delay in shifting then eventually not shift out of first at all. I changed the filter and gasket after i noticed it leaking a little bit, but it still will not shift out of first. Something else i noticed was that the engine gets unusually hot despite the temperature gauge indicating it's at normal operating temp or even below, but there has been no drastic surges such as when the radiator was bad. I would really appreciate it if anyone could suggest what the problem may be or even a remedy. Thanks, thomas > I would really appreciate it if anyone could suggest > what the problem may be or even a remedy. OK. The problem (with your car) is you have a transmission that won't shift out of first gear. A secondary problem is that (real or imagined) your engine gets unusually hot even though your most reliable indicator says it doesn't. The best remedy would be to take it to a trust-worthy mechanic for a proper diagnosis and estimate. > I've had an 1987 bonneville (3.8) that's been almost not worth the > trouble if i didn't love it too much. [quoted text clipped - 11 lines] > Thanks, > thomas When you Radiator was giving problems before it blew, perhaps your antifreeze was mixing with the transmission oil & did some internal damage. If your trans has never been rebuilt its possible the end of its life is here, afterall it is 19 years old. I second the previous posters reply. Good Luck harryface 05 Park Avenue 49,009 91 Bonneville 307,322 i looked a little deeper and noticed that it was leaking around the filler tube seal...would that be a cause or an effect of the transmission troubles...Ive never worked with transmissions before but my line of thought is if there is a leak then there's no pressure, no circulation, which would also be why the dipstick for the transmission would also be almost too hot to touch after driving around the block a couple times.... thanks, thomas > When you Radiator was giving problems before it blew, perhaps your > antifreeze was mixing with the transmission oil & did some internal [quoted text clipped - 10 lines] > 05 Park Avenue 49,009 > 91 Bonneville 307,322 The dipstick tube seal and the pan gasket are not pressure points. You could drip oil from these points for years and not have a problem as long as the oil level is kept up. The Valve Body and Torque Converter, I believe are pressurized. Internal wear from age, heat & mileage wear out gears, clutches, valve and other vital internal parts. Good Luck harryface 05 PArk Avenue 49,089 91 Bonneville 307,322 The pump pushes pressurized fluid into the valve body which directs it to diferent clutches or bands effectively locking different gear ratios. Trannies usually slip when they are wearing out, or low on fluid. On newer vehicles shifting problems are usually electronic problems. On older cars shifting problems can be kickdown cable, or TV cable or vacuum modulator related. GW > The dipstick tube seal and the pan gasket are not pressure points. You > could drip oil from these points for years and not have a problem as [quoted text clipped - 10 lines] > 05 PArk Avenue 49,089 > 91 Bonneville 307,322 I remember reading something once about 3.8L tranny's having problems with solinoid (SP?) going bad. It's not an expensive part. It somehow controls shifting etc in the tranny.. You might want to have that looked at. > The pump pushes pressurized fluid into the valve body which directs it > to diferent clutches or bands effectively locking different gear ratios. [quoted text clipped - 19 lines] > > 05 PArk Avenue 49,089 > > 91 Bonneville 307,322 thanks, will check the solinoid. > I remember reading something once about 3.8L tranny's having problems > with solinoid (SP?) going bad. It's not an expensive part. It somehow [quoted text clipped - 24 lines] > > > 05 PArk Avenue 49,089 > > > 91 Bonneville 307,322 |
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