Hi, I have a '93 Maverick/GQ patrol - (the best 4WD that Ford never made)
The Basics
Symptoms
- 4.2D naturally aspirated
- Manual box
- Wagon
- Coil Springs
- Disks all around
- Approx 2" suspension lift
- No body lift
- 30" diam tyres on 16" Rims
- No uneven tyre wear or scalloping etc.
- I have a high frequency vibration at approx 90 - 100 Kmh
- Up to 85/90 Kmh - No vibration
- Steering wheel doesn't shake.
- Feels like the source of the vibration is not from the wheels, but middle to rear of vehicle.
- Vibration frequency is too high to be tyre issues.
- It feels much faster than the rotation speed of the wheels.
- It almost feels "notchy" like gear teeth. But there is no unusual noise from diffs or gearbox.
Attempts made to fix
- Front wheel bearings replaced around a year ago, when I replace the front diff centre. There was a wheel stud that had somehow become lodged between the teeth of the crown wheel and pinion of the front diff prior to my purchase of the vehicle. I have pics.
- All wheels balanced
- Tailshaft removed, unis replaced, tailshaft balanced, tailshaft installed with slip-yoke to front as advised by Driveline due to rub marks from crossmember when it faced the standard way.
- Transfer case replaced because of rear output shaft bearing showing a little play and weeping of oil.
(Interestingly - the speedo is now very optimistic. GPS speed of 100 Kmh - Speedo shows 115 Kmh.)
Questions
Cheers, Ross
- Is it possible the transfer case has reduction gears or something in High range? - or is it just a different speed sensor in the xfer case. She does seem to be accelerating a little quicker.
- Can anyone venture a guess as to the likely source of the vibration?
Gday Ross welcome aboard ive moved your thread to the intro section gotta friendly mob here fulla great info and advice