Torque converter locking and unlocking.
05-27-2012, 10:41 AM
#1
Torque converter locking and unlocking.
Hey guys, I've got an issue with my torque converter. It intermittently locks up then unlocks when I am driving steady. I'm not hitting the brakes, down shifting, or taking my food all the way off the gas. I am guessing it may be a wiring issue. Does anybody have an idea about what this issue is?
05-31-2012, 04:11 PM
#2
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Join Date: Mar 2007
Location: Norway
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Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
Re: Torque converter locking and unlocking.
Hi.
I guess you have a L98 engine in your car with a ECM controlled converter lock up??
If so they are computer controlled to lock up at an exact speed in MPH.
That means if you are cruising slowly in 20mph or whatever the computer is commanded to, and holding it steady the computer (ECM) will engage and disengage the clutch with only small seconds between. I guess this could be frustrating some times. I know that making a new EPROM wth new data for the lock-up is a way to fix this.
I guess you have a L98 engine in your car with a ECM controlled converter lock up??
If so they are computer controlled to lock up at an exact speed in MPH.
That means if you are cruising slowly in 20mph or whatever the computer is commanded to, and holding it steady the computer (ECM) will engage and disengage the clutch with only small seconds between. I guess this could be frustrating some times. I know that making a new EPROM wth new data for the lock-up is a way to fix this.
05-31-2012, 05:32 PM
#3
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
Re: Torque converter locking and unlocking.
You need this http://www.rickscamaros.com/camaro-t...1981-1992.html
Hey guys, I've got an issue with my torque converter. It int ermittently locks up then unlocks when I am driving steady. I'm not hitting the brakes, down shifting, or taking my food all the way off the gas. I am guessing it may be a wiring issue. Does anybody have an idea about what this issue is?
05-31-2012, 07:09 PM
#6
Re: Torque converter locking and unlocking.
I got the problem solved. I ordered a 700r4 trans and converter from Hughes Performance. They sent me a trans that had a wiring harness that was not compatible with the computer. The computer was not in control of locking the converter. They had a wired for a car that didn't have a computer controlling the converter lock up. I had to go through a lot of crap with them to figure that out.
I will never purchase anything from Hughes Performance again. I specifically filled out there order sheet and told them the specs for my car. I also told them that I am using the stock computer for my car so, it would control the lockup function.
I had to deal with Hughes Performance for a month trying to resolve this issue. They allowed me to send the trans and converter back and get a full rerund. I shouldn't have to pay for their issues with not following directions.
I eventually purchased another transmission from Bowtie Overdrives and that solved the issue. The lockup functions just like it is supposed to. Also this transmission shifts better.
The Hughes Performance trans would bang in to everygear even an light throttle.
I will never purchase anything from Hughes Performance again. I specifically filled out there order sheet and told them the specs for my car. I also told them that I am using the stock computer for my car so, it would control the lockup function.
I had to deal with Hughes Performance for a month trying to resolve this issue. They allowed me to send the trans and converter back and get a full rerund. I shouldn't have to pay for their issues with not following directions.
I eventually purchased another transmission from Bowtie Overdrives and that solved the issue. The lockup functions just like it is supposed to. Also this transmission shifts better.
The Hughes Performance trans would bang in to everygear even an light throttle.
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