1087RE: [force_ev] Drive System Problems
- Jan 4, 2005The speed sensor problems really only show up under a load. It sounds to me
like the speed sensor board needs a little adjustment. If you have a
manual, this is easy to do. The adjustment screw needs to be turned 1/4 one
way or the other. My guess is that the sensor is too close and should be
backed off a bit. On my recent gearbox overhaul, Bob put the board in with
the spacing washer on top of the board instead of under it, making the board
about 1/8" closer. The car didn't work at all. It would not go over 15 MPH
before regen for kick in while accelerating. The problem I had after this
was getting a smooth regen. The gap gage gets it close but fine tuning
needs to be done with a road test.
From: sharpanil [mailto:sharpanil@...]
Sent: Monday, January 03, 2005 6:45 PM
Subject: [force_ev] Drive System Problems
I just purchased a 1995 Solectria from an ex EV1 owner here in
Southern California...so now I feel officially part of the club!
Anyway, the vehicle under full throttle makes a sharp "shuddering"
noise and begins to "bog" down. When the throttle is reduced the
vehicle begins to accerelate normally. It acts similar as a manual
transmission car with the clutch slipping.
The previous owner spoke to Solectria who said that it might be a
motor speed sensor problem. I performed the motor speed sensor test,
as described in the service manual. The vehicle was jacked up and I
SLOWLY accelerated up to maximum speed. Everything seemed normal to
me. There is periodic motor vibration noise which I assume is normal
and not related.
If anyone has experienced this problem or could give me advice, I
would surely appreciate it. I am wondering if the service manual's
description of testing the motor speed sensor is adequate enough.
Would it be worth while visual inspecting the speed sensor? It seems
like a lot of work to get to it.
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