Thread: Tranny problem? Not too sure where to start

If the lights on, great start would be to check the DTC codes, most auto parts stores have the code readers. This will narrow things down some. usually flashing check engine light is multiple mis-fires or something bad. But chugging on the highway could be anything really

Go get the codes, write them down, and come back and well go from there

i cheked it previously when i changed the plugs and it said i had #6 misfire when i changed the plugs i still had the check engine light on but ran better until recently the light started flashing it runs fine but the puttering comes in on hills or on the freeway seldomly...could it be a coil pack?

could be

I would pull the #6 plug and inspect with a fine toothed comb, a hairline fracture in the insulation can cause it to arc outside the cyl and not run right. This can happen if you over torqued it at all or if it was even dropped before you bought it.

If all is well with the plug, switch coil packs out. I.E. change out 6/3 with 2/5. They are the same so IF it is a coil pack, this will make the problem jump to cyl 2. Should you do this, just make sure you take into consideration, MOVE THE PLUG WIRE ACCORDINGLY... if you leave them alone and just change the location of the coils your engine will run even worse... if it runs at all. *No responsibility for this either* Backyard Performance 101 advice here.
You will need to clear the DTCs and recheck them after to make sure it DOES jump, if so you have your answer

Good luck