420A Is this a bad TCU ?

[Ethenp23]

Wondering if my 1995 eagle talon esi automatic transmission has a bad tcu I am dealing with limp mode and replaced a lot but the tcu can anyone give me tips on what to look at? To be honest it already looks like this could be my problem…

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[BLACK'98DSM]

What makes you think it looks bad? That little bubbly area in the gel? Wipe some of that dust off the area and see if it looks like something is burned underneath.

 

[jesse12345]

Yeah mine looks like that and there's nothing wrong with it, same with the junkyard one I got to.

 

[Ethenp23]

What makes you think it looks bad? That little bubbly area in the gel? Wipe some of that dust off the area and see if it looks like something is burned underneath.

Nah isn’t my first time replacing a ecu/tcu I know what the gel is for

I don’t think it looks bad bc of how to looks I think it’s bad bc limp mode as stated when I introduced my problem

It’s to dark to see threw been cleaning it for 3 hours

 

[BLACK'98DSM]

3 hours?

I meant just wipe the dust off. All you need to look for is dark spots where something got too hot. It's not completely transparent.

 

[Ethenp23]

3 hours?

I meant just wipe the dust off. All you need to look for is dark spots where something got too hot. It's not completely transparent.

No man you don’t understand when I say it’s black I mean it’s black all I see is a smalllllll bit of tint red under the black nothing else

 

[jesse12345]

I know when my trans was In limp mode it was the big solenoid block on the front of the transmission.

 

[motomattx]

I know when my trans was In limp mode it was the big solenoid block on the front of the transmission.

This is usually what it is.

 

[Ethenp23]

I know when my trans was In limp mode it was the big solenoid block on the front of the transmission.

I was planning on replacing the eatx relay and the tcu if not then my next culprit was gonna be the speed sensors or the solenoid being my last

This is usually what it is.

I still think it might be the tcu each time I take it out and inspect it then put it back in to drive it, it acts different every time it’s plugged in.

 

[BLACK'98DSM]

Have you checked to see if there's any loose pins on the connector for the tcu?

 

[Ethenp23]

Have you checked to see if there's any loose pins on the connector for the tcu?

Yes they look in great condition as for the shift solenoid is there any diagram or maybe any information on how to replace it ? Will there be a loss of a lot of trans fluid? Ect

 

[motomattx]

No real fluid loss to speak of, they just unbolt.

 

[Ethenp23]

No real fluid loss to speak of, they just unbolt.

No real fluid loss to speak of, they just unbolt.

Is there any filters or small internal part I should also replace while replacing the solenoid? or is it just replace solenoid an gasket done?

 

[jesse12345]

Your profile says you have a 95 remember there's a thick plate under the solenoid pack that you have to take out. The ones you buy are upgraded so they don't use that same design that uses the plate.

 

[motomattx]

Is there any filters or small internal part I should also replace while replacing the solenoid? or is it just replace solenoid an gasket done?

Not really.

 

[Ethenp23]

Your profile says you have a 95 remember there's a thick plate under the solenoid pack that you have to take out. The ones you buy are upgraded so they don't use that same design that uses the plate.

Do you have a picture of ones I have to buy so I have a idea ?