RUNS FINE UNTIL THE THE CAR IS WARMED UP THEN ONCE IN WHILE IT JERKS on 2004 Mazda MPV

THIS JERKING HAPPENS MOST OFTEN AT 2000 RPM OR LESS.
BEEN TO 3 REPAIR SHOPS AND ONE TRANMISSION SHOP.
SAID THE TRANSMISSION IS OK WOULD HAVE LEAVE IT FOR A FEW DAYS TO FIND WHAT IT IS. WHAT DO YOU THINK IT COULD BE

JOHN

1 answer 1 comment
maybe you have an ignition problem
Just what would you say the problem is exactly? If you want to help answer the question!!! I will be waiting for your answer!
What part of the ignition, you are a mechanic right? So narrow it down some at least.