I have to agree, that is sounding like U joints
Rascal
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Dan Kramarsky
Sent: Sunday, February 27, 2005 5:33 PM
To: dakota-truck@dakota-truck.net
Subject: DML: UPDATE: Drivetrain vibration under specific conditions
Hi DMLers,
In addition to the conditions below that I mentioned. I found another
seperate condition
where the vibration occurs. If the truck is going 50 to 75 or so and you
put it in
neutral then the vibration occurs. You put it back in drive and give it gas
and the
vibration goes away after a sec or two.
original conditions:
1. ) Cruising at any speeds between 50 and 80 mph.
2. ) Ease up on the gas so that the drivetrain and engine are NOT loading
each other.
3. ) The gas is not reduced to the point that we are coasting. Because
thats torque
right. Its the vehicle being "braked" the the engine resistance.
4. ) Seems to happen with shifter in "Drive" position and not so much in
"2" or "1".
5. ) So basically what we have here is the driveshaft freely spinning at
high rpm and no
load.
Does anyone one want to play "guess that problem"?
We have so far: a. transfer case ( i dont have one :-) )
b. U-Joints ( U-Joints were replaced when the tranny
was rebuilt )
c. ( put your hunch here )
thanks DMLers.
=====
Dan K.
'92 Grey Dak CC, 318, 4x2, 46RH, 3.92 rear, 235/75R15, PS, PW, PB, PL, AC.
Mods: Trans-Go, APS Precision's 2400 stall, cool air induction, K&N
filter, Autolite 3924s, & re-located IAT sensor.
Future: 180* stat, MP PCM, Stage 1 T.B., HER1418AL Cam, 3" Gibson exhaust,
March pullies, electric fan, and head porting.
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