![]() Drive for 5-6 miles, then check level while hot, idlingĪnd in park on level ground. The torque converter lockup clutch to ‘on’ and stay there, you’ll have to tear everything outįinally be very sure the tranny fluid level is right. A P1811 forces the line oil pressure so high it’ll damage other things like jamming Shift kits in the #1 / #2 shift accumulators work great, easily done with the oil pan off.ġ or 2 cans of Seafoam Trans Tune before you pour in new ATF.ĭisconnect the car battery for 30 minutes to reset the computer, you likely have a P1811 code There so many more common problemsįor hard shifts that will cause damage that are all centered around a cheapen-out ![]() So the book value of a car is not something I think about, rather the cost to get anotherĬlutch pack wear is like No 99 reason for hard shifts. If you can "TLC" an older car and get 2 more years, that's a plus!! Keep us informed on your progress!įirst off, even if a car’s not “worth much” the cost of a replacement car can be a lot! Your issue sounds more like a worn out clutches but the magnet upgrade wouldn't hurt. Frequent fluid changes along with the upgraded magnets can also help fix the problem in the long run if indeed the solenoids have contaminants on them. The stronger magnets help correct the line pressure problem and help prevent the problem from getting worse. The 4Txxe transmissions are so reliant on those solenoids that any metal particulate that gets attracted to a solenoid will cause problems guaranteed. Do a google search for the TSB and the instructions about adding the magnets as each transmission model has a different procedure. GM put out a TSB back in 2009 or so and basically all GM hydramatic electronically controlled transmissions are to receive the updated magnet whenever the pan is dropped. If the pan has hard metal bits in the gray sludge, add the upgraded magnets. This is a well documented issue with these transmissions that happens as the clutches wear down so I would use a dedicated high mileage atf (castrol transmax) since a higher viscosity is needed. My personal opinion is to skip the shift kit and the Dexron VI, I would only recommend Dexron VI if the transmission was operating normal. Lot's of talk about this topic on this site and other forums as well. ![]()
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