3.76 Gears not shifting into 5th
#1
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3.76 Gears not shifting into 5th
About 3 days after I had the 3.76 gears installed my car has been lagging or not shifting into 5th gear. I'll accelerate from a stop and the car stays in 4th gear indefinetly (one time up to 70mph) until I manually put the gear shifter into 4th and back into 5th.
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
Last edited by Lvangundy; 08-17-05 at 10:04 AM.
#3
Originally Posted by Lvangundy
About 3 days after I had the 3.76 gears installed my car has been lagging or not shifting into 5th gear. I'll accelerate from a stop and the car stays in 4th gear indefinetly (one time up to 70mph) until I manually put the gear shifter into 4th and back into 5th.
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
Don't know why the gear swap would cause this unless it's just coincidental. My trans shifts just fine. I assume you have not gotten any CE lights?
#4
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I'll try to repeat the process again today, it definetly wasn't up-shifting properly.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
Originally Posted by rominl
lee, you mean even with the rpm up to 4000 it still doesn't shift in to 5th?
#5
I've had no problem with my car after the Torsen 3.76 LSD install either. The differential really should not have any effect on the transmission. As stated by FutureGS it may just be coincidental.
#6
Originally Posted by Lvangundy
I'll try to repeat the process again today, it definetly wasn't up-shifting properly.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
Between your "slow" acceleration runs, and the trans problem it sure sounds like something unusual going on! Sorry can't be of more help....
#7
Originally Posted by Lvangundy
About 3 days after I had the 3.76 gears installed my car has been lagging or not shifting into 5th gear. I'll accelerate from a stop and the car stays in 4th gear indefinetly (one time up to 70mph) until I manually put the gear shifter into 4th and back into 5th.
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
This doens't happen every time, so I'm not sure what's going on. Anyone else experience that?
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#8
Originally Posted by rheiy
I've had my 3.76 for about 9 months now and just recently, I noticed that the shift from 4th to 5th is delayed sometimes. Or shall I say, it feels like the car is holding 4th gear longer when it should go to 5th. It only happens when the car is fully warmed up and it does not happen all the time. However, I don't have any lag in engine performance. Under wot, shifts from 1st to 2nd, to 3rd are perfect. (I have not tried any wot from 1st through 5th for obvious reasons of not wanting to get a ticket for doing 100+mph) Overall, I'm not sure if I should be concerned about the occasional 4th to 5th shift delay
#9
I'll look into this. I was talking to Ted at Dynamic Auto Service (Master Lexus Tech) about TCs and he told me not all of them have the ability to lock-up and won't go into overdrive.
Apparently, this is why the 430s throw a check engine light with TCs installed- the ECU is looking for the RPM to drop in overdrive, but they don't lock-up in OD and the ECU calls a foul.
Apparently, this is why the 430s throw a check engine light with TCs installed- the ECU is looking for the RPM to drop in overdrive, but they don't lock-up in OD and the ECU calls a foul.
#10
Originally Posted by SoCalSC4
I'll look into this. I was talking to Ted at Dynamic Auto Service (Master Lexus Tech) about TCs and he told me not all of them have the ability to lock-up and won't go into overdrive.
Apparently, this is why the 430s throw a check engine light with TCs installed- the ECU is looking for the RPM to drop in overdrive, but they don't lock-up in OD and the ECU calls a foul.
Apparently, this is why the 430s throw a check engine light with TCs installed- the ECU is looking for the RPM to drop in overdrive, but they don't lock-up in OD and the ECU calls a foul.
#13
Originally Posted by Lvangundy
I'll try to repeat the process again today, it definetly wasn't up-shifting properly.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
I'm going to do a trans fluid drain/refill soon, but I don't think that will solve this. It seems like the computer is weirding out trying to figure out when to shift. 3 days seems like ample time for the comptuer to learn so it makes sense.
There is NO time to loose. You are in mortal danger. You MUST remove the LSD immediately and ship it to a SAFE location to avoid catastrophe.
I will PM you my shipping address...
#14
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Who's Ryan?
You had me there for a second.
You had me there for a second.
Originally Posted by jbrady
Ryan, this is a SERIOUS as well as DANGEROUS PROBLEM...
There is NO time to loose. You are in mortal danger. You MUST remove the LSD immediately and ship it to a SAFE location to avoid catastrophe.
I will PM you my shipping address...
There is NO time to loose. You are in mortal danger. You MUST remove the LSD immediately and ship it to a SAFE location to avoid catastrophe.
I will PM you my shipping address...