HI,I JUST BROUGHT MY 3126 CAT MOTOR WITH 55,000 MILES IN TO THE DEALER TO HAVE IT DIAGNOSED ,,,BECAUSE OF LOW POWER AND POOR EXELLERATION... ALREADY CHANGED FILTERS ,OIL, FUEL PRESURE REG. FUEL ACUATION SENCORS. S0 THEY READ THE ECM TO MAKE SURE THE MILES WERE CORRECT...NOW,THEY CLAIM THE ENGINE WAS HUNTING WHEN HOT I HAVE NEVER HEARD THAT FRAISE WHAT DOES THAT MEAN IS THAT THE SAME AS A MUFFLER BEARING? HA!,,,THEY ALSO SAY THAT THEY PERFORMED A CYL, BALANCE TEST CAN YOU TELL ME WHAT THAT IS??? THEY SAY # XXXXX CYL WAS ABNORMAL FROM THE BALANCE TEST I TOLD THEM I WANTED IT DIAGNOSED,,,I ALWAYS THOUGHT IT WAS CALLED A CONTRIBUTION TEST
MANY THINGS WHAT TEST SHOULD BE PERFORMED IN ORDER TO DIAGNOSE MY MOTOR THERE ARE NO CODES PRESENT I AM SICK OF BEING JERKED AROUND FROM THE DEALERSO FAR 400.00 TO TELL ME THERE ARE NO CODES PRESENT WHICH I ALREADY KNEW AND A CYL BALANCE TEST GOD KNOWS WHAT THAT IS. CAN YOU PLEASE TELL ME WHICH TEST SHOULD BE DONE TO FIND OUT WHY MY MOTOR WON,T GO OVER 40 MPH UP HILL EMPTY?? NO LOAD THANK YOU PHIL
Hi. Thanks for using JA! I will try and help you out. Does the check engine light come on when tthtthis happens? 41085.0173165509
NO CODES,,, ACTIVE or stored
Thanks for the information. Hunting normally means the engine is surging, like the rpm's are going up and down.A cylinder balance test is just a test used to compare all the cylinders against each other. This is ussed to find a weak cylinder If the truck will not go over 40 and does not turn on the check engine light, the test ibwould want to ruun is the fuel pressure test. Your engine should have between 65 and 85 psi. If it is low, I would suspect a weak fuel transfer pump since you have replaced the regulator. Please reply back if you need more help.