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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!gatech!concert!theo!brooks
- From: brooks@mcnc.org (Ted Brooks)
- Subject: Re: stuck carb, airborne
- Message-ID: <1992Dec23.142451.27604@mcnc.org>
- Sender: daemon@mcnc.org (David Daemon)
- Nntp-Posting-Host: alfred.mcnc.org
- Organization: MCNC Center for Microelectronics, RTP, NC
- References: <n12cct@ofa123.fidonet.org>
- Date: Wed, 23 Dec 1992 14:24:51 GMT
- Lines: 58
-
- In article <n12cct@ofa123.fidonet.org> Larry.Mc.Donald@ofa123.fidonet.org writes:
- > zm@cbnewsb.cb.att.com
- >
- > (Zafer Mehmood)
- >
- >> Whenever I read stories about runaway cars with stuck throttle
- >> plate/cable or cruise mechanisms, I wonder why the transmission cannot
- >> be shifted into neutral to disengage the engine from the drive-train.
- >> Yes, the engine can over-rev causing damage but that's a cheap price
- >> to pay compared to the risk of collision and bodily injury. In a
- >> couple of automatics that I've tried, I was able to shift into neutral
- >> even while accelerating. Manual transmissions, on the other hand won't
- >> shift into neutral while accelerating (at least not easily), but then
- >> you can use the clutch to disengage the engine from the transmission.
- >
- >> Aside from the driver panicking and not having the presence of mind,
- >> is there a reason why this can not be done? Am I missing something?
- >
- > Other than pieces of the block getting under the tires and
- >puncturing them, no, no reason. A better solution that doesn't
- >cause irrepairable engine damage is to just turn the car off. I
- >had a Ford Maverick get it's throttle stuck on the freeway and I
- >was able to get it off the freeway and to a parking lot by
- >regulating it's speed by turning it on and off.
- >
- Bet you got plenty of backfiring in the exhaust. Still, that's a lot
- better than having a wreck or blowing the engine.
-
- One of the classic stuck throttle syndrome cars were the full size Chevys
- of the mid '60s. As I recall from an automotive safety class I took years
- ago, the scenario went like this. Someone with a hot small block V8 would
- stomp on the gas. These cars had a bunch of bad motor mounts, so the one
- motor mount would break. The broken motor mount allowed the engine to shift
- position. This would jam the throttle linkage, and also cause
- the automatic transmission linkage to bind. If the motor rocked far enough,
- the power steering hoses would break too, which is real bad if you happened
- to be showing off by taking a fast curve. So now you've got a car with a hot
- engine stuck at full throttle, stuck in the passing gear, and no power steering
- assist. Two reasons one might think not turn off the ignition. One, you know
- you're screwed and you're filling your pants while trying to maintain
- control :-() - in other words, panic. Two, you've got both hands on the
- wheel trying to manhandle the failed power steering.
-
- GM caught a lot of flak for their bad motor mounts, and didn't win any
- friends when the recall fix was adding a chain between the block and frame
- instead of replacing the motor mounts.
-
-
- Ted Brooks
- ______________________________________________________________________
- | Disclaimer: The opinions expressed are my own, and do not reflect |
- | those of my employer. Advice is free, but you get what you pay for. |
- | ________ |
- | _____| 1955 |_______ |
- | / Chevrolet / |
- | /______ BelAir _____/ |
- | |________| |
- |______________________________________________________________________|
-