Stalling problems

[z24ride]

97 Z24 is beginning to chug. After the car is started it begins sluggish and then seems to clear up. Sometimes the car dies completely when approching stop signs and after switching from reverse to drive, if anyone has any information or if this has happened to you please help.

[Micko34]

Originally Posted by z24ride

97 Z24 is beginning to chug. After the car is started it begins sluggish and then seems to clear up. Sometimes the car dies completely when approching stop signs and after switching from reverse to drive, if anyone has any information or if this has happened to you please help.

Same thing happened with our 91 Cav. Died at stop lights. We were told the TCC solenoid needed to be replaced. We unplugged it instead, and there have been no problems for months. They say that mileage suffers, but it is minimal if anything.

[alpurl]

Originally Posted by Micko34

Same thing happened with our 91 Cav. Died at stop lights. We were told the TCC solenoid needed to be replaced. We unplugged it instead, and there have been no problems for months. They say that mileage suffers, but it is minimal if anything.

Sounds like what happened to me.

I too, disconnected the Torque Converter lock up solenoid and the problem went away.

As far as fuel economy, on my 2.0 4 cylinder, if I keep it under 60, I estimate I'm getting between 32 and 35 MPG highway.

I seriously doubt if it's hurting fuel economy much.

[quake61]

Originally Posted by alpurl

Sounds like what happened to me.

I too, disconnected the Torque Converter lock up solenoid and the problem went away.

As far as fuel economy, on my 2.0 4 cylinder, if I keep it under 60, I estimate I'm getting between 32 and 35 MPG highway.

I seriously doubt if it's hurting fuel economy much.

and changing the solenoid is expensive or too much work?
just asking

[alpurl]

As I understand it, the solenoid is INSIDE the transmission, it's not really worth the trouble to replace.

[quake61]

Originally Posted by alpurl

As I understand it, the solenoid is INSIDE the transmission, it's not really worth the trouble to replace.

ok but. it wont hurt the tranny not replacing it? and also,

do we need to pull the tranny out to replace it?

sorry but i needed to ask

[alpurl]

I don't know where the solenoid is in the transmission, so I don't really know 100% for certain if the tranny MUST be removed to replace it.

But, to be honest, NO it will NOT hurt the tranny by disabling it without fixing it.

The sole purpose of this mechanism is this...

At a predetermined speed, the car's computer sends a signal to the solenoid to engage the lock-up mechanism inside the torque converter.

This in turn causes the plates in the torque converter to engage in direct contact with each other, just the same way as a clutch in a car with a manual transmission.

The result is that the engine becomes directly coupled to the transmission. The result is an increase in fuel economy. This is because there is NEVER 100% output as long as the plates have that gap between them. You might achieve as much as 90% efficiency in energy transfer.

It is the gap between the plates that allows you to have the car in gear, with your foot on the brake idling at a stop without stalling the engine.

Please note, the exact efficiency in input vs output is something of which I have no idea, but I'm sure that it could be easily researched.

[alpurl]

It just dawned on me, I explained how torque converters work in a different thread that covered this EXACT same problem.

Here is a link to THAT post.
http://www.automotiveforums.com/vbul...75#post3548275

For a better and more detailed explanation of how torque converters and automatic transmissions work, check out these links.

Automatic transmissions
http://auto.howstuffworks.com/automa...ansmission.htm

Torque Converters
http://auto.howstuffworks.com/torque-converter.htm