tranny shifted to neutral on its own

[red1977]

Today I was driving down the freeway doing about 70mph, I was in my economy tune and stepped on it it shifted down to 4 then went into neutral. I had to put the gear selector in neutral then back in to drive and it went back to 5. no codes no limb mode. what would cause this?

 

[duratothemax]

sometimes they will kick into neutral and "limp" without throwing a code. I would say thats what happened here...

Ben

 

[red1977]

i thought when they went into limp they wouldn't come out of 3rd gear

 

[McRat]

It's not going to downshift into an unsafe gear when it limps. It will wait until it slows down.

 

[red1977]

ok i understand that but i got off the freeway and it shifts threw all the gears fine. could it still be in limp mode?

 

[McRat]

If it's in full limp mode, you are correct, it caps at 3rd and throws a CEL 700 code. Which is a TCM: "I'm not going to the tell the ECM what is really wrong, I'm just going to complain."

If you have EFILive or a Tech 2, take a look soon to see if there is a code history. Not all codes throw lights.

 

[red1977]

i have the insight and the only codes it throw are for my glow plug heater relay

 

[McRat]

Don't think an Insight will read tranny codes.

 

[juddski88]

Check tcm connection, mine were loose and it would do this but on the 2-3 shift

 

[red1977]

Check tcm connection, mine were loose and it would do this but on the 2-3 shift

will do thank you