My car is freaking out

[95strokerPSU]

Yesterday my car started to freak out and spudder and the Autometer Tach needle was jumping up and down. Last night I moved my TFI module out of the fenderwell and back to it's stock location (was always is the heat sink). This morning everything seemed fine until after work I'm driving and it starts sputtering again and the tach jumping. When I came to a stop the tach needle jumped all the way down to zero and the car dyed and squealed until I turned the key off. I tried starting it again I it wouldn't turn over. I popped the hood and pressed on the TFI to make sure it was getting a proper ground. Tried starting it again and it turned over, but as soon as I started driving again, same thing.

Would an improperly grounded TFI module cause something like this?

The module is slightly loose in the heat sink as I don't have one of the screws. Would this cause a bad ground?

Also I just noticed that when I touch the brakes that seems to make things freak out.

Please help I need to fix this, this car is my DD.

Dave

 

[95strokerPSU]

Just pulled the codes...

#15 Failure in Electronic Control Assembly - problems with Keep Alive Memory

#18 Loss of tach signal to Electronic Control Assembly

and even though it's not related and doesn't mean much

#67 Improper signal from Neutral safety switch

 

[mo_dingo]

Just pulled the codes...

#15 Failure in Electronic Control Assembly - problems with Keep Alive Memory

#18 Loss of tach signal to Electronic Control Assembly

and even though it's not related and doesn't mean much

#67 Improper signal from Neutral safety switch

You read the codes wrong. Ours are 3 digit, not 2.

They flashes will read out as such. First, you will see a wierd flicker, then it will flash 4 times (half the number of cylinders), then it will start with the codes.

It will repeat each code twice. So if the codes are 135 and 242, it wil read 135, 242, then 135, 242 again.

Get a haynes manual if you don't remember the procedures. And here is a link to the code listing.
Scott

 

[HISSIN50]

Scott is right - do you have an A9L/PIH conversion?

If so, check Pin one at the puter for 12 volts constant. And a code 67 on a fox will keep you from being able to run the KOER codes. This can also be tripped if the A/C is on while trying to run codes. THIS ALL ASSUMES A FOX PROCESSOR - but between Scott and this, I think we covered a few possibilities.

Good luck.

 

[Synned]

Are you sure its not something simple in the electrical system? Is your battery gauge showing good readings?

 

[95Vert]

Are you sure its not something simple in the electrical system? Is your battery gauge showing good readings?

Check this out before going the expensive route.