Problem!!!!! Vibration in all gears.
04-11-2011, 12:07 PM
#1
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Problem!!!!! Vibration in all gears. Car is fine in Park and Neutral. but when put in any other gear it moves, but vibrating very badly. Car is 93 z28 auto. Any suggestions?????
04-11-2011, 12:26 PM
#3
A heavy vibration could be caused by a broken motor (or trans) mount or something out of balance.
It could also be caused by something as simple as a burnt/crossed plug wire.
04-11-2011, 12:50 PM
#6
If it popped into place while you were driving, those nuts need to be tightened.
Sometimes new converters chatter when TCC lockup engages.
This usually wears off within a few days. I've had a few that were so bad I had to disable TCC lockup alltogether.
Last edited by James Montigny; 04-11-2011 at 01:01 PM.
04-11-2011, 12:52 PM
#7
The 4L60 (non e) uses weights and springs in the governor to adjust shift points.
I have a thread here somewhere from my adventure, I'll see if i can find it.
I ended up using weights 4 and 5 with springs one step firmer from stock.
Last edited by James Montigny; 04-11-2011 at 12:58 PM.
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04-11-2011, 12:57 PM
#8
Here's the note I had in my build thread;
Here's a pic of the governor recalibration kit I used (or rather, the parts I had left over when I was done)
Quick review for those who want to set shift points in a 700R4/Th400/Th350
Weights are numbered 1-6, 6 being the lightest (highest shift point)
A combination of weights 4 and 5 produce a 6375RPM shift for me (Similar results in other cars I've done)
Springs are colored in a rainbow pattern (Purple, Red, Orange, Yellow, Green, Blue, Black)
Purple being the lightest, Black being the firmest.
Firmer springs produce longer, soggy shifts. (no idea why anyone would want that)
Stock springs appear to be the equiv to Orange and Green.
Weight 1 15g
Weight 2 12g
Weight 3 10g
Weight 4 8g
Weight 5 6g
Weight 6 5g
so
8g+6g = 14g (6375 shift)
6g+5g = 11g (>7000 shift)
8g+5g = 13g (>7000 shift)
Also: don't lose the stupid e-clips; they're impossible to find on short notice (and with poor eyesight)
I bought a whole box when I finally found them, they're in my toolbox just in case.
Weights are numbered 1-6, 6 being the lightest (highest shift point)
A combination of weights 4 and 5 produce a 6375RPM shift for me (Similar results in other cars I've done)
Springs are colored in a rainbow pattern (Purple, Red, Orange, Yellow, Green, Blue, Black)
Purple being the lightest, Black being the firmest.
Firmer springs produce longer, soggy shifts. (no idea why anyone would want that)
Stock springs appear to be the equiv to Orange and Green.
Weight 1 15g
Weight 2 12g
Weight 3 10g
Weight 4 8g
Weight 5 6g
Weight 6 5g
so
8g+6g = 14g (6375 shift)
6g+5g = 11g (>7000 shift)
8g+5g = 13g (>7000 shift)
Also: don't lose the stupid e-clips; they're impossible to find on short notice (and with poor eyesight)
I bought a whole box when I finally found them, they're in my toolbox just in case.
04-12-2011, 11:27 PM
#9
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okay i thought it was gone but it isnt. when in gear it does this vibrating/surge thing until i tap the gas. and then i feel it right after it shifts into 4th. and it does it when crusing and i start to accelerate. im thinking drive shaft or something.
04-12-2011, 11:32 PM
#10
It sounds like it's a chattery lockup. (I mentioned that in a previous post)
Another indicator is that it will occur at a very specific speed (I think 45mph was the default under light
throttle and 70 at WOT; but that could be altered in your tune)
04-13-2011, 11:17 AM
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Hold the brake in lightly while cruising and tell me if it goes away.
It sounds like it's a chattery lockup. (I mentioned that in a previous post)
Another indicator is that it will occur at a very specific speed (I think 45mph was the default under light
throttle and 70 at WOT; but that could be altered in your tune)
It sounds like it's a chattery lockup. (I mentioned that in a previous post)
Another indicator is that it will occur at a very specific speed (I think 45mph was the default under light
throttle and 70 at WOT; but that could be altered in your tune)
04-13-2011, 11:34 AM
#13
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ok i just checked i dont think it has a miss. But i put the car in reverse and popped the hood (with e brake on). and it started vibrating like it was. when i popped the hood the the alternator was vibrating and i looked under and so was the tensioner. and one of them were making the noise i was hearing.
04-13-2011, 05:03 PM
#15
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ok i just checked i dont think it has a miss. But i put the car in reverse and popped the hood (with e brake on). and it started vibrating like it was. when i popped the hood the the alternator was vibrating and i looked under and so was the tensioner. and one of them were making the noise i was hearing.
