1979 Jeep Cj7 Cj7 258 Motor T400 Automatic Transmission Quadratrac

1979 JEEP CJ7
185,000 MILES
Avatar
WARTHOG0169
  • MEMBER
  • 1 POST
I have a 1979 cj7.258 motor t400 automatic transmission(quadratrac).My question is regarding the motor.At about 55mph when is give it a little gas it starts clacking.Any ideas what it could be?
Dec 12, 2012 at 3:19 PM
Advertisement
Avatar
CJ MEDEVAC
  • ASE Certified Mechanic
  • 11,004 POSTS
  • ASE Certified Mechanic
CAN YOU MAYBE COMPARE IT TO ANOTHER KNOWN SOUND?

ARE YOU SURE IT'S ENGINE NOISE?

HAVE A PASSENGER SORTA CRAWL AROUND IN THE COCKPIT AND LISTEN

ONE OF THE BIG AWFUL THINGS WITH YOUR TYPE IS THE DARN CHAIN IN THE TRANSFER CASE

IT COULD BE REVERBERATING SOUND THRU THE TRANNY AND ENGINE

YOU MIGHT EVEN REMOVE THE FLOOR PLATE (I THINK IT HAS ONE) WHERE THE MANUAL SHIFTER WOULD NORMALLY GO THRU AND LISTEN

A PIECE OF HEATER OR GARDEN HOSE MIGHT MAKE A GOOD STETHOSCOPE FOR YOUR PASSENGER

KEEP US INFORMED---I HAVE OTHER RESOURCES THAT MAY AID YOU FOR ANY REPAIRS

I'VE DEALT WITH JUST A FEW QUADRATRAC MODELS----MAYBE 5, IN HELPING TO REPLACE THE CHAIN (THOSE WERE HANDS ON--PAIN IN THE CABOOSE)

THE MEDIC

Dec 13, 2012 at 5:49 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.