trans problems
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Rookie
Joined: Dec 2008
Posts: 55
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From: Central Ky
trans problems
ok about a year ago I had my trans replaced for surging and grinding, and well just not behaving well.
over the year I have been back in the shop several times since over 65mph the rpms surge about 1~200 rpm. I have had the torque converter replaced, a new valve ??, wheel speed sensors, cables adjusted, and new trans cooler with all new lines... in short I have spent a lot of money on a trans thats supposed to be under warranty. long of the short I am not happy.
well I had a long trip I had to take and heres what I found.
#1 starts only while using cruise.
#2 starts around 65~70 and slipping gets closer and closer till about 30~40 seconds apart.
#3 if I slow to 60 it will run for about 50 miles before acting up again starting with slips far apart till they get to be about every 30~40 seconds apart.
#4 If I let it act up at 60 it will do it with cruise off and using the pedal. going away around 45 mph.
#5 did not do it the whole trip back (which was 1200 miles continous vs. 300 mile streches on my way there) when I was only using the pedal and not using the cruise.
Please I need some Ideas of how to get this fixed. about the only time I use the truck is trips over 50 miles and frankly I'd rather set the cruise sit back and enjoy the ride. this is driving me nuts, ruined the rep of a couple shops (IMHO) and costing me waaaaay too much.
thanks for the advice
Mike
over the year I have been back in the shop several times since over 65mph the rpms surge about 1~200 rpm. I have had the torque converter replaced, a new valve ??, wheel speed sensors, cables adjusted, and new trans cooler with all new lines... in short I have spent a lot of money on a trans thats supposed to be under warranty. long of the short I am not happy.
well I had a long trip I had to take and heres what I found.
#1 starts only while using cruise.
#2 starts around 65~70 and slipping gets closer and closer till about 30~40 seconds apart.
#3 if I slow to 60 it will run for about 50 miles before acting up again starting with slips far apart till they get to be about every 30~40 seconds apart.
#4 If I let it act up at 60 it will do it with cruise off and using the pedal. going away around 45 mph.
#5 did not do it the whole trip back (which was 1200 miles continous vs. 300 mile streches on my way there) when I was only using the pedal and not using the cruise.
Please I need some Ideas of how to get this fixed. about the only time I use the truck is trips over 50 miles and frankly I'd rather set the cruise sit back and enjoy the ride. this is driving me nuts, ruined the rep of a couple shops (IMHO) and costing me waaaaay too much.
thanks for the advice
Mike
Veteran
Joined: Nov 2008
Posts: 469
Likes: 0
From: Oxford, MI
It sounds like me that you are having issues with your Torque Converter locking up. I am very in-experienced in diagnosing trans problems though so take it with a grain of salt. Usually around 50ish though is when the TC is supposed to lock up and your RPM's should drop down more. If it is locking/un-locking randomly then your RPM's will fluctuate. There may be a sensor of some sort that controls this. I'm sure someone else will chime in soon and give you more direction. If not, then I would get ahold of MonteC or Transguy to find out more.
Record Breaker
Joined: Nov 2003
Posts: 1,256
Likes: 2
From: North Charleston, SC
Is it slipping or surging? Ive seen this problem before, but mainly in the diesel trucks.
Check all grounds, find someone with a quality scan tool and have them monitor the lock up state, see if the computer is commanding changes in lock up.
Check all grounds, find someone with a quality scan tool and have them monitor the lock up state, see if the computer is commanding changes in lock up.