I want very much to know if anyone else has had this problem or can point me to a source where I can get troubleshooting advice. Thanks in advance.

I get an occasional but substantial vibration after the right wheel goes through a puddle or in very, very heavy rain. Here are the details.

The Car
1994 Integra GSR 4DR

The Scenario
Above 40 mph in 5th gear a substantial vibration occurs after the right front wheel goes through a puddle or, in the instance of heavy rain, a pretty constant vibration. The frequency of the vibration seems to be motor-RPM. It slows down when the car slows down. Usually, it disappears at 20-25 mph.

If I disengage the clutch and gas the motor while it's still vibrating, the frequency increases with the motor RPM.

Once it disappears, it may or may not come back later when the right tire goes through another puddle. If it's constent very heavy rain, I must go slow or it will eventually return.

I think, but have not yet confirmed, that the lower the gear engaged when it manifests itself, the lower the speed (mph) is that induces it.

I do not have any lubricant coming from any seals that I can see. Because it persists at the motor-RPM frequency, I've excluded the drive shaft assembly, differential and transmission but not the pressure plate, clutch disc, flywheel or any bearings related to them.

 

Unless the water has a way to get in where the clutch/flywheel/throwout bearing are, I don't see how the rain could affect that. Has it ever happened when it wasn't raining, or there weren't puddles? Does it happen while coasting, or just when you are on the throttle?

 

How about water getting on distributor cap or plug wires, causing misfiring? That would mean your cap or wires are going bad.

 

Thanks - No, it's never happened in dry weather. As to coasting, once it gets down to, say, 30 mph in 5th gear, it stops. It needs to get down to about 25 before it stops in 4th gear.

I replaced the cap, coil, wires and plugs about 10,000 miles ago but I'll check it out. It's still raining here (Chicago). So, I'll see what's up on the way home from work. Thanks

 

That, or possibly water getting onto the air filter..do you have a CAI?

 

Thanks again.

No, the car is totally stock except for the radio antenna and the shift knob.

But, I'll look at that, too.